openvpn-concat.sh

#!/usr/bin/env bash

function match()
{
    local f="$1" && shift
    [[ "$f" =~ [^/]*\.conf$ ]] && {
        local o=(
            '^cert '
            '^key '
            '^tls-auth '
            '^ca '
        )
        eval egrep -v $(printf -- "-e %s " "${o[@]}") "$f"
        echo
        return
    }
    [[ "$f" =~ /ta\.[^/]*$ ]] && {
        echo
        echo "<tls-auth>"
        cat "$f"
        echo "</tls-auth>"
        echo "key-direction 1"
        return
    }
    [[ "$f" =~ /ca\.[^/]*$ ]] && {
        echo
        echo "<ca>"
        cat "$f"
        echo "</ca>"
        return
    }
    [[ "$f" =~ [^/]*\.crt ]] && {
        echo
        echo "<cert>"
        cat "$f"
        echo "</cert>"
        return
    }
    [[ "$f" =~ [^/]*\.key ]] && {
        echo
        echo "<key>"
        cat "$f"
        echo "</key>"
        return
    }
}

function main()
{
    local dir="$(readlink -f "$1")"
    shift

    local f
    for f in "$dir"/*; do
        match "$f"
    done
}
main "$@"