sourcezap/bin/sourcezap

#!/bin/sh
set -e

##
# variables
localbase=${LOCALBASE:-$(realpath "$(dirname "$0")"/..)}
libexec="${localbase}"/libexec/sourcezap
defaultbranch="hardened/14-stable/master"
gitdir="/home/_sourcezap/src"
giturl="${SOURCEZAP_CLONEURL:-https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git}"
installdir="${SOURCEZAP_INSTALLDIR:-/usr/src}"
revision="${installdir}"/.sourcezap

##
# functions
# shellcheck source=/dev/null
. "${libexec}"/functions/print.sh

require_dependency()
{
    deps=$1
    for dep in $deps; do
        if ! which -s "$dep"; then
            printerr "${dep} wasn't found on \$PATH"
            exit 1
        fi
    done
}

##
# main
i=1
while [ "${i}" -le "$#" ]; do
    eval "_sourcezap_option=\$${i}"
    # shellcheck disable=SC2154
    if [ "${_sourcezap_option}" = "-v" ]; then
        cat "${localbase}"/share/sourcezap/VERSION
        exit 0
    fi
    # shellcheck disable=SC2003
    i=$(expr "${i}" + 1);
done

case $1 in
    "clone")
        require_dependency "git doas"
        "${libexec}"/commands/sourcezap-clone "${giturl}" "${gitdir}" "${defaultbranch}"
        ;;
    "pull")
        require_dependency "git doas"
        "${libexec}"/commands/sourcezap-pull "${gitdir}"
        ;;
    "checkout")
        require_dependency "git doas"
        "${libexec}"/commands/sourcezap-checkout "${gitdir}" "${2}"
        ;;
    "sh")
        require_dependency "doas"
        "${libexec}"/commands/sourcezap-sh "${gitdir}"
        ;;
    "rm")
        "${libexec}"/commands/sourcezap-rm "${gitdir}" "${installdir}"
        ;;
    "install")
        require_dependency "git doas"
        "${libexec}"/commands/sourcezap-install "${gitdir}" "${installdir}" "${revision}"
        ;;
    *)
        printf "Usage: sourcezap COMMAND [OPTIONS]\n"
        printf "\n"
        printf "Commands:\n"
        printf "  clone       Clone the HardenedBSD source tree\n"
        printf "  pull        Pull source tree updates\n"
        printf "  checkout    Checkout a branch other than the default\n"
        printf "  sh          Run /bin/sh within /home/_sourcezap/src/\n"
        printf "  rm          Remove /usr/src/ and /home/_sourcezap/src/\n"
        printf "  install     Install the source tree into /usr/src/\n"
        ;;
esac