shareviahttp

#!/bin/sh
#    Copyright 2016 Maximilian Stein
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

####################################################################################################
PYTHON=python3
QR=qr
BASENAME=basename
MKTEMP=mktemp
LN=ln
RM=rm
HOSTNAME=hostname
AWK=awk
SED=sed

PYTHON_HTTP_SERVER=http.server

####################################################################################################
usage()
{
    cat >2 <<EOF
Usage:
    $0 [options] file1 [file2 [file3 ...]]

Options:
    -i <ip>
        Listen on ip (default: first non-loopback)
EOF
    exit 1;
}

[ $# -eq 0 ] && usage

MULTIMODE=0
[ $# -gt 1 ] && MULTIMODE=1

TMPDIR=$($MKTEMP -d -t "shareviahttp.XXXXXXXXXXX")

IP=$($HOSTNAME -I | $AWK '{print $1}')
PORT=8000

while [ $# -gt 0 ]; do
    case "$1" in
        -i)
            IP="$2"
            shift;;
        *)
            FILENAME="$($BASENAME "$1")"
            if [ "$FILENAME" = "." ]; then
                # in case the user just gave . use the PWD instead
                FILENAME="$($BASENAME $(pwd))"
            fi
            FILENAME=$(echo "$FILENAME" | $SED -e 's/\s\+/_/g')
            $LN -s "$(pwd)/$1" "$TMPDIR/$FILENAME"
            ;;
    esac
    shift
done

[ -z "$FILENAME" ] && echo "No file(s) given!" >2 && usage

# generate the qr
HTTP_PATH=http://$IP:$PORT
[ $MULTIMODE -eq 0 ] && HTTP_PATH=$HTTP_PATH/$FILENAME

$QR "$HTTP_PATH"
echo "$HTTP_PATH"

# start the python server
cd "$TMPDIR"
$PYTHON -m "$PYTHON_HTTP_SERVER" --bind $IP $PORT