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more hosts, keychain, small stuff

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This commit is contained in:
Felix Schueren
2025-11-08 00:49:55 +01:00
parent b65521d46c
commit 9ebe896757
8 changed files with 458 additions and 16 deletions
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1
Dockerfile → build/linux-base-image/Dockerfile
View File

@@ -2,6 +2,7 @@ FROM debian:latest
RUN apt update && apt --yes install openssh-server python3 sudo iproute2 iputils-ping traceroute vim && mkdir -p /root/.ssh/ && mkdir -p /run/sshd && rm -f /etc/ssh/ssh_host*
RUN apt --yes install dnsmasq udhcpc less tcpdump
RUN apt --yes install telnet netcat-openbsd wget curl man net-tools
RUN apt --yes install keychain
# RUN apt install --yes nginx python3-pip
# RUN pip3 install 'uvicorn[standard] fastapi'

2
config/dnsmasq.conf
View File

@@ -1,3 +1,3 @@
interface=eth2
domain=sshworkshop.local
dhcp-range=set:workshop,192.168.0.10,192.168.0.200,12h
dhcp-range=set:workshop,192.168.0.1,192.168.0.200,36h

30
helpers/csv2cards.sh
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@@ -1,9 +1,11 @@
#!/usr/bin/env bash
# csv2cards.sh → html
# csv2cards.sh → html with guaranteed colour styling
CSV=${1:-credentials.csv}
OUT=${2:-cards.html}
# start the document
# --------------------------------------------------------------
# 1️⃣ Write the full HTML header (including the colour CSS)
cat >"$OUT" <<'EOF'
<!DOCTYPE html>
<html lang="en">
@@ -14,7 +16,7 @@ cat >"$OUT" <<'EOF'
@page { size: A4 portrait; margin: 1cm; }
body { font-family: monospace; display: flex; flex-wrap: wrap; gap: 0.5cm; }
.card {
width: 9cm; /* fits 2‑3 cards across A4 */
width: 9cm;
border: 1px solid #333;
padding: 0.3cm;
box-sizing: border-box;
@@ -22,14 +24,25 @@ cat >"$OUT" <<'EOF'
}
.field { margin: 0.1cm 0; }
.label { font-weight: bold; }
/* ---- 6‑colour palette (exactly as you requested) ---- */
.bg0 { background:#eeff90; } /* light lime */
.bg1 { background:#b9ffbf; } /* pastel green */
.bg2 { background:#b6e1ff; } /* soft blue */
.bg3 { background:#ffd795; } /* peach */
.bg4 { background:#f0a6fc; } /* lavender */
.bg5 { background:#f397a5; } /* coral */
</style>
</head>
<body>
EOF
# read CSV, skip header, emit a <div class="card"> per line
awk -F',' 'NR>1{
printf "<div class=\"card\">\n"
# --------------------------------------------------------------
# 2️⃣ Convert each CSV row into a coloured card
awk -F',' '
NR>1{
col = (NR-2) % 6 # 0‑5 cycle
printf "<div class=\"card bg%d\">\n", col
printf " <div class=\"field\"><span class=\"label\">IP:</span> %s</div>\n", $1
printf " <div class=\"field\"><span class=\"label\">Host:</span> %s</div>\n", $2
printf " <div class=\"field\"><span class=\"label\">User:</span> %s</div>\n", $3
@@ -37,8 +50,9 @@ awk -F',' 'NR>1{
printf "</div>\n"
}' "$CSV" >>"$OUT"
# close the document
# --------------------------------------------------------------
# 3️⃣ Close the HTML document
cat >>"$OUT" <<'EOF'
</body>
</html>
EOF
EOF

388
helpers/fireworks.sh Executable file
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@@ -0,0 +1,388 @@
#!/bin/bash
#
# This holiday decoration script was put together by Bryan Lunduke.
# www.Lunduke.com
#
# Some portions were inspired or copied from other works. Where that is
# the case it is noted within the source.
#
# Reset
Color_Off='\033[0m' # Text Reset
# Regular Colors
Black='\033[0;30m' # Black
Red='\033[0;31m' # Red
Green='\033[0;32m' # Green
Yellow='\033[0;33m' # Yellow
Blue='\033[0;34m' # Blue
Purple='\033[0;35m' # Purple
Cyan='\033[0;36m' # Cyan
White='\033[0;37m' # White
# Bold
BBlack='\033[1;30m' # Black
BRed='\033[1;31m' # Red
BGreen='\033[1;32m' # Green
BYellow='\033[1;33m' # Yellow
BBlue='\033[1;34m' # Blue
BPurple='\033[1;35m' # Purple
BCyan='\033[1;36m' # Cyan
BWhite='\033[1;37m' # White
ShowTree () {
#
# The base of this animated tree was copied from ChrisBASHTree
# https://github.com/sergiolepore/ChristBASHTree
#
trap "tput reset; tput cnorm; exit" 2
clear
tput civis
lin=2
col=$(($(tput cols) / 2))
c=$((col-1))
est=$((c-2))
color=0
tput setaf 2; tput bold
# Tree
for ((i=1; i<20; i+=2))
{
tput cup $lin $col
for ((j=1; j<=i; j++))
{
echo -n \*
}
let lin++
let col--
}
tput sgr0; tput setaf 3
# Trunk
for ((i=1; i<=2; i++))
{
tput cup $((lin++)) $c
echo 'mWm'
}
new_year=$(date +'%Y')
let new_year++
tput setaf 1; tput bold
tput cup $lin $((c - 6)); echo MERRY CHRISTMAS
let c++
k=1
# Lights and decorations
while true; do
for ((i=1; i<=35; i++)) {
# Turn off the lights
[ $k -gt 1 ] && {
tput setaf 2; tput bold
tput cup ${line[$[k-1]$i]} ${column[$[k-1]$i]}; echo \*
unset line[$[k-1]$i]; unset column[$[k-1]$i] # Array cleanup
}
li=$((RANDOM % 9 + 3))
start=$((c-li+2))
co=$((RANDOM % (li-2) * 2 + 1 + start))
tput setaf $color; tput bold # Switch colors
tput cup $li $co
echo o
line[$k$i]=$li
column[$k$i]=$co
color=$(((color+1)%8))
# Flashing text
sh=1
for l in C O D E
do
tput cup $((lin+1)) $((c+sh))
#echo $l
let sh++
sleep 0.01
done
}
k=$((k % 2 + 1))
done
}
ShowMenorah () {
# Draw the Menorah
clear
echo
echo
echo
echo -e "${Blue} |"
echo -e "${Blue} | | | | | | | | |"
echo -e "${Blue} | | | | | | | | |"
echo -e "${Blue} | | | | | | | | |"
echo -e "${Blue} \ \ \ \ | / / / /"
echo -e "${Blue} \ \ \ \_|_/ / / /"
echo -e "${Blue} \ \ \ | / / /"
echo -e "${Blue} \ \ \__|__/ / / Happy Hanukkah!"
echo -e "${Blue} \ \ | / / ${White}Chag Hanukkah sameach!"
echo -e "${Blue} \ \___|___/ /"
echo -e "${Blue} \ | /"
echo -e "${Blue} \____|____/"
echo -e "${Blue} |"
echo -e "${Blue} __|__"
echo -e "${Blue} ____|____"
# Count the candles for each night
while true; do
for ((i=1; i<=9; i++)) {
tput cup 2 0; echo -e "${White} |"
if [ $i -eq 1 ]
then # Night 0 - Shamash only
tput cup 2 0; echo -e "${White} |"
tput cup 3 0; echo -e "${White} ${Blue} | ${White} "
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Shamash only"
elif [ $i -eq 2 ]
then # Night 1
tput cup 3 0; echo -e "${White} ${Blue} | ${White} |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 1 "
elif [ $i -eq 3 ]
then # Night 2
tput cup 3 0; echo -e "${White} ${Blue} | ${White} | |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 2 "
elif [ $i -eq 4 ]
then # Night 3
tput cup 3 0; echo -e "${White} ${Blue} | ${White} | | |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 3 "
elif [ $i -eq 5 ]
then # Night 4
tput cup 3 0; echo -e "${White} ${Blue} | ${White}| | | |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 4 "
elif [ $i -eq 6 ]
then # Night 5
tput cup 3 0; echo -e "${White} | ${Blue} | ${White}| | | |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 5 "
elif [ $i -eq 7 ]
then # Night 6
tput cup 3 0; echo -e "${White} | | ${Blue} | ${White}| | | |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 6 "
elif [ $i -eq 8 ]
then # Night 7
tput cup 3 0; echo -e "${White} | | | ${Blue} | ${White}| | | |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 7 "
elif [ $i -eq 9 ]
then # Night 8
tput cup 3 0; echo -e "${White} | | | | ${Blue} | ${White}| | | |"
tput cup 6 0; echo -e "${Blue} | | | | | | | | | ${White}Night 8 "
fi
sleep 0.5
}
done
}
function colorstr()
{
local row=$1
local col=$2
local color=$3
local v
case "$color" in
red) v=31;;
green) v=34;;
blue) v=32;;
purple) v=35;;
cyan) v=36;;
yellow) v=33;;
brown) v=33;;
white) v=37;;
*) v=;;
esac
shift 3
if [[ $multiple -ne 0 ]]; then
touch $lock_file
while [[ $(ls $lock_file_base.* 2>/dev/null | head -n 1) != $lock_file ]]
do
sleep 0.05
done
fi
tput cup $row $col
echo -n -e "\e["$v"m"
set -f
echo -n $*
set +f
if [[ $multiple -ne 0 ]]; then
rm -f $lock_file
fi
}
function center_colorstr()
{
local row=$1
local color=$2
shift 2
local s="$*"
local slen=${#s}
colorstr $row $(((cols / 2) - (slen / 2))) $color "$s"
}
function fireworks()
{
local row=$((rows - 1))
local col=$(((RANDOM % (cols / 2)) + (cols / 4)))
local height=$((RANDOM % rows - 2))
local slant
local h
local color1=${colors[$((RANDOM % ${#colors[*]}))]}
local color2=${colors[$((RANDOM % ${#colors[*]}))]}
local color3=${colors[$((RANDOM % ${#colors[*]}))]}
while [[ $color1 == $color2 || $color1 == $color3 || $color2 == $color3 ]]
do
color2=${colors[$((RANDOM % ${#colors[*]}))]}
color3=${colors[$((RANDOM % ${#colors[*]}))]}
done
case $((RANDOM % 4)) in
0) slant=-2;;
1) slant=-1;;
2) slant=1;;
3) slant=2;;
esac
if [[ $height -gt 5 ]]; then
h=$height
while [[ $h -gt 0 ]]
do
colorstr $row $col $color1 '.'
let row--
if [[ $((col + slant)) -ge $((cols - 3)) || $((col + slant)) -le 2 ]]; then break; fi
let col+=slant
let h--
sleep 0.1
done
if [[ $((col + slant)) -lt $((cols - 3)) && $((col + slant)) -gt 2 ]]; then
h=$((height / 5))
while [[ $h -gt 0 ]]
do
colorstr $row $col $color2 '.'
let row++
if [[ $((col + slant)) -ge $((cols - 3)) || $((col + slant)) -le 2 ]]; then break; fi
let col+=slant
let h--
sleep 0.1
done
fi
colorstr $((row)) $((col - 1)) $color3 '***'
colorstr $((row - 1)) $((col)) $color3 '*'
colorstr $((row + 1)) $((col)) $color3 '*'
fi
}
function runFireworks()
{
rows=$(tput lines)
cols=$(tput cols)
colors=(red green blue purple cyan yellow brown)
lock_file=
lock_file_base=/tmp/$(basename $0 .sh)
multiple=0
if [[ "$1" ]]; then
nsingle=$1
shift
else
nsingle=10
fi
if [[ "$1" ]]; then
nmultiple=$1
shift
if [[ $nmultiple -gt 8 ]]; then nmultiple=8; fi
else
nmultiple=6
fi
clear
until [ 1 -eq 2 ]
do
sleep 1
clear
pids=
for i in $(seq 1 $nmultiple)
do
let multiple++
lock_file=$lock_file_base.$i
fireworks &
pids="$pids $!"
done
trap "kill -9 $pids 2>/dev/null" EXIT
wait $pids
done
clear
}
if [ "$1" = "Tree" ]
then
ShowTree
exit
elif [ "$1" = "Menorah" ]
then
ShowMenorah
exit
elif [ "$1" = "Fireworks" ]
then
runFireworks
exit
else
echo -e "${White}Possible options for Lunduke's Shell Holiday Decorations: ${Blue}Tree Menorah Fireworks"
exit
fi

10
setups/gateway.sh
View File

@@ -5,13 +5,13 @@ dpkg-reconfigure openssh-server
ip addr replace dev eth1 10.192.40.2/29
# the "southbound" interface towards all the clients that we are DHCP server for
ip addr replace dev eth2 192.168.0.1/24
ip addr replace dev eth2 192.168.0.254/24
# "eastbound" gw<->jumphost1 eth3 and 172.16.200/23 behind jumphost1
ip addr replace dev eth3 172.16.202.32/31
# ip route replace 172.16.200/23 via 172.16.202.33
echo "nameserver 192.168.0.1" > /etc/resolv.conf
echo "nameserver 192.168.0.254" > /etc/resolv.conf
# ----------------------------------------------------------------------
@@ -25,8 +25,10 @@ echo "nameserver 192.168.0.1" > /etc/resolv.conf
/usr/local/bin/online-users.sh
) > /online-users.txt & # ← background the whole subshell
(/usr/sbin/sshd -D) &
# launch dnsmasq (automatically backgrounds)
dnsmasq --no-daemon
(dnsmasq --no-daemon --log-facility=/dns.log --log-queries) &
# dnsmasq --no-daemon
/usr/sbin/sshd -D

1
setups/jumphost.sh
View File

@@ -9,6 +9,7 @@ create_user_from_shared_names_list () {
my_pwd=${my_pwhash_pwd#*,}
useradd -m ${my_username} -p "${my_pwhash}" -s /bin/bash
# su - ${my_username} -c 'mkdir -p .ssh'
su - ${my_username} -c "echo 'alias fireworks=\"fireworks.sh Fireworks\"' >> ~/.bash_aliases"
echo "$my_pwd" > /home/${my_username}/PASSWORD
}

11
setups/linux.sh
View File

@@ -1,9 +1,13 @@
#!/bin/bash
dpkg-reconfigure openssh-server
# my_username=$(shuf -n 1 /etc/workshopnames.yml | cut -b 3-)
udhcpc -i eth0 -x hostname:$(hostname) -F $(hostname)
# once we have our IP, create the matching user.
my_last_octet=$(ip -4 a s dev eth0 | grep / | cut -f 4 -d . | cut -f 1 -d /)
# udhcpc -i eth0 -x hostname:$(hostname) -F $(hostname)
# # once we have our IP, create the matching user.
# my_last_octet=$(ip -4 a s dev eth0 | grep / | cut -f 4 -d . | cut -f 1 -d /)
my_last_octet=$(( $(hostname | tr -cd '0-9') )) ## just keep the numbers from the hostname
# ip addr replace dev eth0 192.168.0.${my_last_octet}/24
# ip route replace default via 192.168.0.1
udhcpc -i eth0 -x hostname:$(hostname) -F $(hostname) -r 192.168.0.${my_last_octet} # request .1 for linux1, etc. GW should be .254
my_username_pwhash=$(sed -n "${my_last_octet}{p;q}" /etc/workshopnames.yml)
my_username="${my_username_pwhash%%:*}"
my_pwhash_pwd="${my_username_pwhash#*: }"
@@ -14,4 +18,5 @@ su - ${my_username} -c 'mkdir .ssh'
echo "$my_pwd" > /home/${my_username}/PASSWORD
# cp /root/.ssh/authorized_keys /home/${my_username}/.ssh/ && chown ${my_username}:${my_username} /home/${my_username}/.ssh/authorized_keys
printf "172.16.202.33\tjumphost1\n" >> /etc/hosts
su - ${my_username} -c "echo 'alias fireworks=\"fireworks.sh Fireworks\"' >> ~/.bash_aliases"
/usr/sbin/sshd -D

31
sshlab.clab.yml
View File

@@ -14,6 +14,8 @@ topology:
- ./config/names-hashes.yml:/etc/workshopnames.yml:ro
- ./config/authorized_keys:/root/.ssh/authorized_keys:ro
- ./setups/linux.sh:/usr/local/bin/setup.sh:ro
- ./helpers/fireworks.sh:/usr/local/bin/fireworks.sh:ro
- ./helpers/ssh-agent-environment.sh:/usr/local/bin/ssh-agent-environment.sh:ro
memory: 256MB
cpu-set: 4-7
nodes:
@@ -36,6 +38,7 @@ topology:
binds:
- ./setups/jumphost.sh:/usr/local/bin/setup.sh:ro
- ./config/names-hashes.yml:/etc/workshopnames.yml:ro
- ./helpers/fireworks.sh:/usr/local/bin/fireworks.sh:ro
memory: 4GB
cpu-set: 2-3
jumphost2:
@@ -107,6 +110,20 @@ topology:
linux48: {kind: linux}
linux49: {kind: linux}
linux50: {kind: linux}
linux51: {kind: linux}
linux52: {kind: linux}
linux53: {kind: linux}
linux54: {kind: linux}
linux55: {kind: linux}
linux56: {kind: linux}
linux57: {kind: linux}
linux58: {kind: linux}
linux59: {kind: linux}
linux60: {kind: linux}
linux61: {kind: linux}
linux62: {kind: linux}
linux63: {kind: linux}
linux64: {kind: linux}
links:
# - endpoints: ["a1:eth1","br-clab:eth1"]
@@ -166,3 +183,17 @@ topology:
- endpoints: [ "linux48:eth0", "br-clab-intonly:l48" ]
- endpoints: [ "linux49:eth0", "br-clab-intonly:l49" ]
- endpoints: [ "linux50:eth0", "br-clab-intonly:l50" ]
- endpoints: [ "linux51:eth0", "br-clab-intonly:l51" ]
- endpoints: [ "linux52:eth0", "br-clab-intonly:l52" ]
- endpoints: [ "linux53:eth0", "br-clab-intonly:l53" ]
- endpoints: [ "linux54:eth0", "br-clab-intonly:l54" ]
- endpoints: [ "linux55:eth0", "br-clab-intonly:l55" ]
- endpoints: [ "linux56:eth0", "br-clab-intonly:l56" ]
- endpoints: [ "linux57:eth0", "br-clab-intonly:l57" ]
- endpoints: [ "linux58:eth0", "br-clab-intonly:l58" ]
- endpoints: [ "linux59:eth0", "br-clab-intonly:l59" ]
- endpoints: [ "linux60:eth0", "br-clab-intonly:l60" ]
- endpoints: [ "linux61:eth0", "br-clab-intonly:l61" ]
- endpoints: [ "linux62:eth0", "br-clab-intonly:l62" ]
- endpoints: [ "linux63:eth0", "br-clab-intonly:l63" ]
- endpoints: [ "linux64:eth0", "br-clab-intonly:l64" ]