#!/usr/bin/env bash
#
#     dailymotion-dl
#     version 0.3.0
#
#
#  Copyright (C) 2009 Trecourt Nicolas
#
#  dailymotion-dl 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, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# ------------------------------------------------------------

if [ "$1" = "" ]
then
       echo "Please specify an URL"
       exit 1
fi

# this will be used to store cookies
cookfile=`mktemp`

if [ "`echo $1 | grep "^http://www.dailymotion.com/swf/"`" ]
then
       echo "[.] looks like an embed/object source, flasm to the rescue"
       tmpfile=`mktemp`

       echo "[.] trying to download $1 to $tmpfile"
       wget -q "$1" -O "$tmpfile" --user-agent="Mozilla/5.0" \
            --keep-session-cookies \
            --save-cookies "$cookfile"
       ret=$?
       if [ $ret -gt 0 ]
       then
               echo "[!] something went bad, wrong URL?"
               rm "$cookfile" "$tmpfile"
               exit 2
       fi

       echo "[v] $1 downloaded, uncompressing"
       flasm -x "$tmpfile" &> /dev/null
       if [ $ret -gt 0 ]
       then
               echo "[!] something went bad, is flasm installed?"
               rm "$cookfile" "$tmpfile"
               exit 3
       fi

       # this is to help parsing...
       sed -i -e 's/||/\t/g' "$tmpfile"

       echo "[.] scanning swf for streams"
       for k in `cat $tmpfile`
       do
               if [ "`echo "$k" | grep H264-848x480`" ]
               then
                       echo "[v] found H264-848x480 data"
                       H264848=$k
               elif [ "`echo "$k" | grep H264-512x384`" ]
               then
                       echo "[v] found H264-512x384 data"
                       H264512=`echo "$k" | cut -d{ -f1 | sed 's/}//g'`
               elif [ "`echo "$k" | grep FLV-320x240`" ]
               then
                       echo "[v] found FLV-320x240 data"
                       FLV320=`echo "$k" | gawk '{ print substr($1, index($1, "{{video}}")+11)}'`
               fi
       done
       if [ "$H264848" != "" ]
       then
               localpart="$H264848"
               echo "[.] using H264-848x480"
       else
               if [ "$H264512" != "" ]
               then
                       localpart="$H264512"
                       echo "[.] using H264-512x384"
               else
                       localpart="$FLV320"
                       echo "[.] using FLV-320x240"
               fi
       fi

       rm "$tmpfile"
else
       echo "[.] doesn't looks like an embed/object source, processing"
fi

# First we get the damn "dummy" flv URL, this time we should be more carefull
if [ "$localpart" = "" ]
then
       localpart=`wget "$1" -O /dev/stdout -q --user-agent="Mozilla/5.0" \
                                              --keep-session-cookies \
                                              --save-cookies "$cookfile" \
                  | grep '.addVariable("video"' \
                  | sed -e "s/%3A/:/g" \
                      -e "s/%2F/\//g" \
                      -e "s/%3F/?/g" \
                      -e "s/%3D/=/g" \
                      -e "s/%40/@/g" \
                      -e "s/%7C/|/g" \
                      -e "s/%2C/,/g" \
                      -e "s/%25/%/g" \
                      -e "s/%26/\&/g" \
                  | gawk '// { print substr($0, index($0, "video=")+6, index($0, "@@spark") - index($0, "video=")-6) }' \
                  | cut -d " " -f 2 | sed -e "s/\"//g" -e "s/);//g"`
fi

if [ "$localpart" = "" ]
then
       echo "[!] cannot get FLV filename, maybe some HTML code change, or video don't exist"
       rm "$cookfile"
       exit 4
else
       tmpfile=`mktemp`
       echo "[v] got FLV initial filename: $localpart"
       echo "[.] will download in `pwd`/.$$, logging in $tmpfile"
fi

# ok now, the "tricky" (sort of) part, must got the "real" FLV
echo "[.] trying to download to .$$"
wget "$localpart" \
    --user-agent="Mozilla/5.0" \
    --keep-session-cookies \
    --save-cookies "$cookfile" \
    -o $tmpfile \
    -O .$$

ret=$?
if [ $ret -gt 0 ]
then
       echo "[!] something went bad, maybe some HTML code change, or video don't exist"
       exit 5
fi

rm "$cookfile"
echo "[v] file downloaded"
echo "[.] trying to detect real filename"

finalfile=`grep Location: "$tmpfile" | cut -d/ -f7 | cut -d? -f1`
if [ "$finalfile" = "" ]
then
       echo "[!] Unable to determine real filename from Location: header"
       echo "[.] renaming to $$.flv"
       mv .$$ $$.flv
else
       echo "[v] real filemame detected as: $finalfile, renaming"
       mv .$$ "$finalfile"
fi

rm "$tmpfile"

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