debian-cd-clone/contrib/mktorrent

#!/bin/bash

HTTPBASE="https://cdimage.debian.org/cdimage"
NFHTTPBASE="https://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/"

MKTORRENT=btmakemetafile.bittornado

for FILE in $@; do
    ISODIR=`dirname $FILE`
    BTDIR=`echo $ISODIR | sed 's/iso-/bt-/;s/usb-/bt-/'`
    if [ ! -d $BTDIR ] ; then
        mkdir -p $BTDIR
    fi

    # Add multiple http seeds: the release path *and* the archive path
    # for both the free images and the non-free images - hopefully
    # clients will use whichever is available!
    case ${FILE} in
	*live+nonfree*)
            VER=$(echo ${FILE} | sed 's,^.*/debian-\(live-\)*,,;s,-.*$,,')"-live+nonfree"
	    FREE=0
            ;;
	*live*)
            VER=$(echo ${FILE} | sed 's,^.*/debian-\(live-\)*,,;s,-.*$,,')"-live"
	    FREE=1
            ;;
	*firmware*)
            VER=$(echo ${FILE} | sed 's,^.*/firmware-,,;s,-.*$,,')"+nonfree"
	    FREE=0
            ;;
	*)
            VER=$(echo ${FILE} | sed 's,^.*/debian-*,,;s,-.*$,,')
	    FREE=1
            ;;
    esac
    if [ $FREE -eq 1 ]; then
	HTTP1="${HTTPBASE}/release/${VER}/${FILE}"
	HTTP2="${HTTPBASE}/archive/${VER}/${FILE}"
    else
	HTTP1="${NFHTTPBASE}/${VER}/${FILE}"
	HTTP2="${NFHTTPBASE}/archive/${VER}/${FILE}"
    fi
    $MKTORRENT http://bttracker.debian.org:6969/announce \
        --comment '"Debian CD from cdimage.debian.org"' \
	--httpseeds ${HTTP1}\|${HTTP2} \
        $FILE | grep -v complete
    mv $FILE.torrent $BTDIR
done