cross-tbx

#!/bin/bash

set -euo pipefail

if [ -e /.waketimed-toolbox ]; then
    echo "ERROR: You're already within a waketimed toolbox container."
    echo "Calls to toolbox shouldn't be nested."
    exit 1
fi

CONTAINER_MGR=${CONTAINER_MGR:-podman}
DIR=$(dirname $(realpath $0))
PROJECT_DIR=$(realpath "$DIR")
PROJECT_TOOLBOX_IMAGE="${PROJECT_TOOLBOX_IMAGE:-localhost/waketimed_toolbox_cross}"
if [ -t 1 ]; then
    TOOLBOX_TTY="${TOOLBOX_TTY:--ti}"
else
    TOOLBOX_TTY="${TOOLBOX_TTY:-}"
fi

if ! $CONTAINER_MGR images | grep "^$PROJECT_TOOLBOX_IMAGE \\+latest " &> /dev/null; then
    pushd "$PROJECT_DIR"
    make toolbox-build
    popd
fi

IDX=0
while $CONTAINER_MGR inspect waketimed_cross_$IDX &> /dev/null; do
    ((IDX++))
done || true

mkdir -p $PROJECT_DIR/tmp/cargo-cross

PASS_THROUGH_VARS=$(compgen -A variable | grep '^WAKETIMED_' | awk '{ print "-e " $0; }' | tr '\n' ' ' || true)

if [ -z "${DESKTOP_PASS_THROUGH+x}" ]; then
    # This allows the container to run the app inside and have it
    # connect with the user's desktop. It also allows running GDB on
    # it.

    DESKTOP_PASS_THROUGH="\
        -v $XDG_RUNTIME_DIR:$XDG_RUNTIME_DIR \
        -e WAYLAND_DISPLAY \
        -e DBUS_SESSION_BUS_ADDRESS \
        -e DESKTOP_SESSION \
        -e DISPLAY \
        -e XDG_CURRENT_DESKTOP \
        -e XDG_DATA_DIRS \
        -e XDG_MENU_PREFIX \
        -e XDG_RUNTIME_DIR \
        -e XDG_SEAT \
        -e XDG_SESSION_DESKTOP \
        -e XDG_SESSION_ID \
        -e XDG_SESSION_TYPE \
        -e XDG_VTNR \
        "
fi

# TODO: make use of --passwd-entry after it is released. Currently
# Podman uses the value from -w as the home dir in /etc/passwd for the
# main user in container (preserved via --userns=keep-id). This seems
# wrong. We explicitly pass -e HOME=$HOME to get around this, but
# there may be something that reads /etc/passwd rather than the env
# var perhaps...
# https://github.com/containers/podman/issues/13185
$CONTAINER_MGR run \
       --name waketimed_cross_$IDX \
       --detach-keys='ctrl-^' \
       $TOOLBOX_TTY \
       --userns=keep-id \
       -w "$HOME/waketimed" \
       --rm \
       --privileged \
       --tmpfs "$HOME" \
       -v /run/dbus/system_bus_socket:/run/dbus/system_bus_socket \
       -v "$PROJECT_DIR/tmp/cargo-cross:$HOME/.cargo:z" \
       -v "$PROJECT_DIR:$HOME/waketimed:z" \
       -e "HOME=$HOME" \
       -e "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/root/.cargo/bin" \
       ${DESKTOP_PASS_THROUGH} \
       ${PASS_THROUGH_VARS} \
       ${PROJECT_TOOLBOX_ARGS:-} \
       "$PROJECT_TOOLBOX_IMAGE" \
       "$@"