Simple DEB repository management. See http://blog.schlomo.schapiro.org/2015/02/simplified-deb-repository.html for full story

putinrepo.sh

#!/bin/bash
#
# Trivial DEB repo management
#
# Written by Schlomo Schapiro
# Licensed under the GNU General Public License, see http://www.gnu.org/licenses/gpl.html for full text
set -e -E -u
if [[ ! "${REPO_BASE_DIR:-}" ]] ; then
    ME_DIR="$(dirname "$(readlink -f "$0")")"
    for CHECK_DIR in "$ME_DIR" "$ME_DIR"/../repo "$ME_DIR"/repo ; do
        if [[ -r "$CHECK_DIR"/config_for_release ]] ; then
            export REPO_BASE_DIR="$(readlink -f "$CHECK_DIR")"
            break
        fi
    done
    if [[ ! "${REPO_BASE_DIR:-}" ]] ; then
        echo "Could not guess your repo path ($ME_DIR $ME_DIR/../repo $ME_DIR/repo), please set REPO_BASE_DIR"
	echo "The repo should contain a file named config_for_release with stuff like"
	echo ' APT::FTPArchive::Release::Architectures "amd64 armhf armel i386";'
	echo ' APT::FTPArchive::Release::Origin "Private";'
	echo "in it"

        exit 1
    fi
elif [[ ! -r "$REPO_BASE_DIR"/config_for_release ]] ; then
    echo "$REPO_BASE_DIR does not seem to be a repo"
    exit 1
else
    : # REPO_BASE_DIR is set and a dir and contains a conf/distributions, nothing to do
    
fi 

echo "* * * Repo in $REPO_BASE_DIR"

WORK_DIR="$(mktemp -d)"
trap "rm -Rf $WORK_DIR" 0

# if you sign the repo to make apt happy and not for real security then you can put the GPG stuff into 
# the key subdir and we will use it.
if [[ -d "$REPO_BASE_DIR"/key ]] ; then
    echo "Using '$REPO_BASE_DIR/key' for GnuPG"
    cp -r "$REPO_BASE_DIR"/key "$WORK_DIR"
    chmod g-rwx,o-rwx -R "$WORK_DIR"/key
    export GNUPGHOME="$WORK_DIR"/key
fi

if [[ "${1:-}" ]] ; then
    for parm in "$@" ; do
        f="$(readlink -f "$parm")" # normalize file
        if [ ! -s "$f" ]; then
            echo "ERROR: Parameter '$parm' does not point to a readable file ($f)"
            exit 1
        fi

        eval $(dpkg-deb --show --showformat 'package_name="${Package}"\npackage_version="${Version}"\npackage_arch="${Architecture}"' "$f")
        canonical_name="${package_name}_${package_version}_${package_arch}.deb"
        echo -n "Adding '$f': "
        if [[ -r "$REPO_BASE_DIR"/deb/"$canonical_name" ]] ; then
            echo -e "ERROR\n\tNOT OVERWRITING EXISTING PACKAGE WITH SAME VERSION!"
        else
            cp "$f" "$REPO_BASE_DIR"/deb/"$canonical_name" && echo "OK"
            all_packages=( "$REPO_BASE_DIR"/deb/"$package_name"* )
            unset 'all_packages[-1]'
            if [[ "$all_packages" ]] ; then
                echo "Removing old packages:"
                rm -fv "${all_packages[@]}"
            fi
        fi
    done
fi

cd "$REPO_BASE_DIR"
apt-ftparchive packages . | tee Packages | bzip2 >Packages.bz2
apt-ftparchive -c config_for_release release . | grep -v " Release" >Release
gpg --output Release.gpg --batch --yes -ba Release