run-tkey-qemu

#!/bin/sh

# SPDX-FileCopyrightText: 2023 Tillitis AB <tillitis.se>
# SPDX-License-Identifier: BSD-2-Clause


image=ghcr.io/tillitis/tkey-qemu-tk1-23.03.1:latest
if [ "$(uname -s)" != Linux ]; then
  printf "Currently this only works on Linux (not when using podman machine)\n"
  exit 1
fi

if ! hash 2>/dev/null socat; then
  printf "Please install socat. Ubuntu: apt install socat\n"
  exit 1
fi

printf "Using image: %s\n" "$image"
if [ "${1:-}" = "-p" ]; then
  shift
  podman pull $image || true
else
  printf "You can pass argument '-p' to pull any update to this image.\n"
fi

hostside=$(pwd)/tkey-qemu-pty
containerside=/tmp/tkey-qemu-$(id -u)-pty-for-container

for pty in "$hostside" "$containerside"; do
  if [ -e "$pty" ]; then
    printf "%s already exists, bailing out\n" "$pty"
    exit 1
  fi
done

socat "pty,raw,echo=0,link=$hostside" \
      "pty,raw,echo=0,link=$containerside" &
socatpid=$$

cleanup() {
  trap - EXIT INT HUP TERM
  kill -1 $socatpid || true
  rm -f "$hostside" "$containerside"
}
trap cleanup EXIT INT HUP TERM

while true; do
  printf "\033[32m"
  printf "Running TKey/QEMU container using image: %s\n" "$image"
  printf "Let your TKey client app talk to it by passing: --port %s\n" "$hostside"
  printf "Stop QEMU by typing 'Ctrl-a' and then 'x'. It will then restart.\n"
  printf "\033[0m"

  podman run --rm -it --device "$containerside:/pty-on-host" $image

  printf "\033[33m"
  printf "Restarting in 1s... Type 'Ctrl-c' now to quit!\n"
  printf "\033[0m"

  sleep 1s
done