#!/bin/bash
set -eu
port=8000

disp_quick_usage()
{
    cat <<EOF
Quick one-shot share
####################

Dependings on the current lan configuration,
you can access the file with one of:

    wget --content-disposition ${HOSTNAME}.local:${port}
    wget --content-disposition ${HOSTNAME}:${port}
EOF
    for ip in $(ip -oneline -family inet address show \
                | sed 's/^.*inet \([0-9.]\+\).*$/\1/') \
              $(ip -oneline -family inet6 address show \
                | sed 's/^.*inet6 \([0-9:a-fA-F]\+\).*$/\1/'); do
        echo "    wget --content-disposition ${ip}:${port}"
    done
    echo ""
    echo "Note: --content-disposition is optional => use remote filename"
    echo "=================================================="
}


disp_quick_usage
filename="$1"
sfilename="$(echo x$filename | sed 's/^x//;s/"//')"
(
    echo "HTTP/1.1 200 OK"
    #echo "Content-Type: $(file -bni "$1")"
    echo "Content-Type: application/octet-stream"
    echo "Content-Transfer-Encoding: binary"
    echo "Content-Disposition: attachment; filename=\"$sfilename\""
    echo "Content-Length: $(du -b "$filename" | cut -f1)"
    echo ""
    cat -- "$filename"
) | nc -l -q0 -p $port >/dev/null 2>&1