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#!/bin/sh -e
read request
while /bin/true; do
read header
[ "$header" = "`printf '\r'`" ] && break
done
code="${request#GET /}"
code="${code% HTTP/*}"
urldecode() { echo -n $1 | sed 's/%\([0-9A-F]\{2\}\)/\\\\\\\x\1/gI' | xargs printf; }
qualityisgreater() {
if [ "$1" = "hd1080" ] && [ "$2" != "hd1080" ]; then
return 0
elif [ "$2" = "hd1080" ]; then
return 1
elif [ $1 = "hd720" ] && [ "$2" != "hd720" ]; then
return 0
elif [ "$2" = "hd720" ]; then
return 1
elif [ $1 = "large" ] && [ "$2" != "large" ]; then
return 0
elif [ "$2" = "large" ]; then
return 1
elif [ $1 = "medium" ] && [ "$2" != "medium" ]; then
return 0
elif [ "$2" = "medium" ]; then
return 1
fi
return 1
}
cookiejar=`mktemp`
baseurl="http://www.youtube.com/get_video_info?video_id=$code&el=detailpage&ps=default&eurl=&gl=US&hl=en"
data=`curl --silent --cookie-jar "$cookiejar" "$baseurl"`
highestquality=small
highesturl=""
highesttype=video/x-flv
title=""
for part in `echo $data | tr '&' ' '`; do
key=`echo $part | cut -d"=" -f1`
value=`echo $part | cut -d"=" -f2`
if [ "$value" != "" ]; then
value=`urldecode "$value"`
fi
case "$key" in
"url_encoded_fmt_stream_map")
for format in `echo $value | tr ',' ' '`; do
for part in `echo $format | tr '&' ' '`; do
key=`echo $part | cut -d"=" -f1`
value=`echo $part | cut -d"=" -f2`
if [ "$value" != "" ]; then
value=`urldecode "$value"`
fi
case "$key" in
"url")
url=$value;;
"quality")
quality=$value;;
"fallback_host")
fallback_host=$value;;
"type")
type=$value;;
"itag")
itag=$value;;
esac
done
if [ $quality = $highestquality ]; then
if [ $type = "video/webm" ]; then
highesttype=$type
highesturl=$url
highestquality=$quality
elif [ $type = "video/mp4" ] && [ $highesttype != "video/webm" ]; then
highesttype=$type
highesturl=$url
highestquality=$quality
fi
elif qualityisgreater $quality $highestquality; then
highesttype=$type
highesturl=$url
highestquality=$quality
fi
done ;;
"title") title="$value" ;;
esac
done
if [ "$highesturl" = "" ]; then
echo "fail $code" >&2
echo HTTP/1.1 200 OK
echo Content-Type: text/plain
echo
echo "error :("
else
url=`curl --silent --head --output /dev/null --write-out %{redirect_url} --cookie "$cookiejar" "$highesturl"`
while [ "$url" != "" ]; do
highesturl=$url
url=`curl --silent --head --output /dev/null --write-out %{redirect_url} --cookie "$cookiejar" "$highesturl"`
done
echo "success $code" >&2
curl --silent --include --cookie "$cookiejar" "$highesturl"
fi
rm $cookiejar