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#!/usr/bin/env bash

set -Eeuo pipefail

# Configure QEMU for graceful shutdown

QEMU_TERM=""

QEMU_PORT=7100

QEMU_TIMEOUT=110

QEMU_DIR="/run/shm"

QEMU_PID="$QEMU_DIR/qemu.pid"

QEMU_PTY="$QEMU_DIR/qemu.pty"

QEMU_LOG="$QEMU_DIR/qemu.log"

QEMU_OUT="$QEMU_DIR/qemu.out"

QEMU_END="$QEMU_DIR/qemu.end"

rm -f "$QEMU_DIR/qemu.*"

touch "$QEMU_LOG"

_trap() {

func="$1" ; shift

for sig ; do

trap "$func $sig" "$sig"

done

}

boot() {

[ -f "$QEMU_END" ] && return 0

if [ -s "$QEMU_PTY" ]; then

if [ "$(stat -c%s "$QEMU_PTY")" -gt 7 ]; then

local fail=""

if [[ "${BOOT_MODE,,}" == "windows_legacy" ]]; then

grep -Fq "No bootable device." "$QEMU_PTY" && fail="y"

grep -Fq "BOOTMGR is missing" "$QEMU_PTY" && fail="y"

if [ -z "$fail" ]; then

info "Windows started successfully, visit http://127.0.0.1:8006/ to view the screen..."

return 0

error "Timeout while waiting for QEMU to boot the machine!"

local pid

pid=$(<"$QEMU_PID")

{ kill -15 "$pid" || true; } 2>/dev/null

return 0

}

ready() {

[ -f "$STORAGE/windows.boot" ] && return 0

[ ! -s "$QEMU_PTY" ] && return 1

if [[ "${BOOT_MODE,,}" == "windows_legacy" ]]; then

local last

local bios="Booting from Hard"

last=$(grep "^Booting.*" "$QEMU_PTY" | tail -1)

[[ "${last,,}" != "${bios,,}"* ]] && return 1

grep -Fq "No bootable device." "$QEMU_PTY" && return 1

grep -Fq "BOOTMGR is missing" "$QEMU_PTY" && return 1

return 0

local line="\"Windows Boot Manager\""

grep -Fq "$line" "$QEMU_PTY" && return 0

return 1

}

finish() {

local pid

local reason=$1

touch "$QEMU_END"

if [ -s "$QEMU_PID" ]; then

pid=$(<"$QEMU_PID")

error "Forcefully terminating Windows, reason: $reason..."

{ kill -15 "$pid" || true; } 2>/dev/null

while isAlive "$pid"; do

sleep 1

# Workaround for zombie pid

[ ! -s "$QEMU_PID" ] && break

done

if [ ! -f "$STORAGE/windows.boot" ] && [ -f "$BOOT" ]; then

# Remove CD-ROM ISO after install

if ready; then

touch "$STORAGE/windows.boot"

if [[ "$REMOVE" != [Nn]* ]]; then

rm -f "$BOOT" 2>/dev/null || true

pid="/var/run/tpm.pid"

[ -s "$pid" ] && pKill "$(<"$pid")"

pid="/var/run/wsdd.pid"

[ -s "$pid" ] && pKill "$(<"$pid")"

fKill "smbd"

closeNetwork

sleep 0.5

echo "❯ Shutdown completed!"

exit "$reason"

}

terminal() {

local dev=""

if [ -s "$QEMU_OUT" ]; then

local msg

msg=$(<"$QEMU_OUT")

if [ -n "$msg" ]; then

if [[ "${msg,,}" != "char"* || "$msg" != *"serial0)" ]]; then

echo "$msg"

dev="${msg#*/dev/p}"

dev="/dev/p${dev%% *}"

if [ ! -c "$dev" ]; then

dev=$(echo 'info chardev' | nc -q 1 -w 1 localhost "$QEMU_PORT" | tr -d '\000')

dev="${dev#*serial0}"

dev="${dev#*pty:}"

dev="${dev%%$'\n'*}"

dev="${dev%%$'\r'*}"

if [ ! -c "$dev" ]; then

error "Device '$dev' not found!"

finish 34 && return 34

QEMU_TERM="$dev"

return 0

}

_graceful_shutdown() {

local code=$?

set +e

if [ -f "$QEMU_END" ]; then

info "Received $1 while already shutting down..."

return

touch "$QEMU_END"

info "Received $1, sending ACPI shutdown signal..."

if [ ! -s "$QEMU_PID" ]; then

error "QEMU PID file does not exist?"

finish "$code" && return "$code"

local pid=""

pid=$(<"$QEMU_PID")

if ! isAlive "$pid"; then

error "QEMU process does not exist?"

finish "$code" && return "$code"

if ! ready; then

info "Cannot send ACPI signal during Windows setup, aborting..."

finish "$code" && return "$code"

# Send ACPI shutdown signal

echo 'system_powerdown' | nc -q 1 -w 1 localhost "${QEMU_PORT}" > /dev/null

local cnt=0

while [ "$cnt" -lt "$QEMU_TIMEOUT" ]; do

sleep 1

cnt=$((cnt+1))

! isAlive "$pid" && break

# Workaround for zombie pid

[ ! -s "$QEMU_PID" ] && break

info "Waiting for Windows to shutdown... ($cnt/$QEMU_TIMEOUT)"

# Send ACPI shutdown signal

echo 'system_powerdown' | nc -q 1 -w 1 localhost "${QEMU_PORT}" > /dev/null

done

if [ "$cnt" -ge "$QEMU_TIMEOUT" ]; then

error "Shutdown timeout reached, aborting..."

finish "$code" && return "$code"

}

SERIAL="pty"

MONITOR="telnet:localhost:$QEMU_PORT,server,nowait,nodelay"

MONITOR+=" -daemonize -D $QEMU_LOG -pidfile $QEMU_PID"

_trap _graceful_shutdown SIGTERM SIGHUP SIGINT SIGABRT SIGQUIT

return 0

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