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|
#!/bin/bash
SCRIPT="$0"
OPTION="$1"
VM="$2"
DIR="qemu"
USER="user"
HOST="localhost"
CORES="4"
MEMORY="4G"
DEVICE="virtio-net-pci,netdev=net0"
HDA_URL="https://cloud.debian.org/images/cloud/trixie/latest"
X64="X64"
A64="A64"
NAMES=("$X64" "$A64")
declare -A QEMU=(
[$X64]="qemu-system-x86_64"
[$A64]="qemu-system-aarch64"
)
declare -A HDA=(
[$X64]="debian-13-nocloud-amd64.qcow2"
[$A64]="debian-13-nocloud-arm64.qcow2"
)
declare -A BIOS=(
[$X64]="/usr/share/edk2/ovmf/OVMF_CODE.fd"
[$A64]="/usr/share/edk2/aarch64/QEMU_EFI.fd"
)
declare -A SSH_PORTS=(
[$X64]="2222"
[$A64]="2223"
)
declare -A PID_FILES=(
[$X64]="$X64.pid"
[$A64]="$A64.pid"
)
declare -A MACHINES=(
[$X64]="pc"
[$A64]="virt"
)
vm_netdev() {
echo -n "user,id=net0,hostfwd=tcp::${SSH_PORTS[$1]}-:22"
}
vm_init() {
if [[ ! -d "$DIR" ]]
then
mkdir $DIR
fi
cd $DIR
if [[ ! -d "$USER" ]]
then
mkdir $USER
ssh-keygen -t ed25519 -f "$USER/$USER" -N ""
fi
for H in ${HDA[@]}
do
if [[ ! -f "$H" ]]
then
wget "$HDA_URL/$H"
fi
done
}
vm_setup() {
local PUB=$(cat "$DIR/$USER/$USER.pub")
local HEADER="COPY AND RUN IN QEMU:"
echo $HEADER
echo " sed -i 's/GRUB_TIMEOUT=5/GRUB_TIMEOUT_STYLE=hidden\nGRUB_TIMEOUT=0/' /etc/default/grub; update-grub; sed -i 's/^%sudo\s\+ALL=(ALL:ALL)\sALL$/%sudo ALL=(ALL:ALL) NOPASSWD:ALL/' /etc/sudoers; adduser --disabled-password --gecos "" --shell /bin/bash $USER; adduser $USER sudo; su - $USER"
echo $HEADER
echo " mkdir .ssh; cd .ssh; echo \"$PUB\" > authorized_keys; chmod 600 authorized_keys; cd ~"
echo $HEADER
echo " sudo apt update; sudo apt upgrade; sudo apt install ssh make gcc gdb; sudo poweroff"
}
vm_check() {
if [[ "$1" != "$X64" && "$1" != "$A64" ]]
then
echo "Usage $SCRIPT $OPTION $X64|$A64"
return 1
fi
return 0
}
vm_boot() {
local PID_FILE="${PID_FILES[$1]}"
if [[ -f "$PID_FILE" ]]
then
echo "VM $1 is running"
return
fi
local CMD=(
"${QEMU[$1]}"
"-M" "${MACHINES[$1]}"
"-cpu" "max"
"-m" "$MEMORY"
"-smp" "$CORES"
"-device" "$DEVICE"
"-netdev" "$(vm_netdev $1)"
"-bios" "${BIOS[$1]}"
"-hda" "${HDA[$1]}"
"-pidfile" "$PID_FILE"
)
for ARG in "${@:2}"
do
CMD+=("$ARG")
done
"${CMD[@]}"
echo "Starting VM $1"
}
vm_cli() {
cd $DIR
vm_check $VM
if [[ $? != 0 ]]
then
return
fi
vm_boot $VM "-nographic"
}
vm_start() {
cd $DIR
vm_check $VM
if [[ $? == 0 ]]
then
vm_boot $VM "-display" "none" "-daemonize"
return
fi
for NAME in "${NAMES[@]}"
do
vm_boot $NAME "-display" "none" "-daemonize"
done
}
vm_cmd() {
vm_check $1
if [[ $? != 0 ]]
then
return
fi
ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no "$USER@$HOST" -p "${SSH_PORTS[$1]}" $2
}
vm_ssh() {
cd $DIR
ssh-add "$USER/$USER" &> /dev/null
vm_cmd $VM
}
vm_sync() {
echo "TODO ${FUNCNAME[0]}"
}
vm_test() {
echo "TODO ${FUNCNAME[0]}"
}
vm_stop() {
local ACTION="$1"
cd $DIR
if [[ "$ACTION" != "KILL" ]]
then
ssh-add "$USER/$USER" &> /dev/null
fi
for NAME in "${NAMES[@]}"
do
local PID_FILE="${PID_FILES[$NAME]}"
if [[ -f "$PID_FILE" ]]
then
if [[ "$ACTION" == "KILL" ]]
then
kill $(cat $PID_FILE)
echo "VM $NAME force stop"
else
vm_cmd $NAME "sudo poweroff"
echo "VM $NAME powering off"
fi
fi
done
}
vm_clean() {
if [[ ! -d "$DIR" ]]
then
return
fi
local CHOICE
read -n 1 -r -s -p "Are you sure? y/n " CHOICE
if [[ "$CHOICE" != "y" ]]
then
echo
return
fi
rm -r $DIR
echo -e "\nRemoved $DIR directory"
}
vm_help() {
echo "See TESTING"
echo "Usage $SCRIPT -init|-setup|-cli|-start|-ssh|-sync|-test|-stop|-kill|-clean|-help"
}
case $OPTION in
-init)
vm_init
;;
-setup)
vm_setup
;;
-cli)
vm_cli
;;
-start)
vm_start
;;
-ssh)
vm_ssh
;;
-sync)
vm_sync
;;
-test)
vm_test
;;
-stop)
vm_stop
;;
-kill)
vm_stop "KILL"
;;
-clean)
vm_clean
;;
*)
vm_help
;;
esac
|
