fetchsub.sh

#!/bin/sh
# Author: RA <ravageralpha@gmail.com>

USAGE(){
    echo "Usage:fetchsub [eng] file"
}

[ $# -eq 0 -o "$1" = '--help' ] && USAGE && exit 0

ERROR(){
    echo "Error:$@" >&2
    exit 1
}

[ -z `which openssl` ] || MD5='openssl md5'
[ -z `which md5sum` ] || MD5='md5sum'
[ -z "$MD5" ] && ERROR "No MD5 tools"
[ -z `which curl` ] && ERROR "No curl"
[ -z `which dd` ] && ERROR "No dd :)"
[ -z `which hexdump` ] && ERROR "No hexdump tools"
[ -z `which gunzip` ] && ERROR "No gunzip tools"

USERAGENT="SPlayer Build 1543"
LANGUAGE='chn'
TIMEOUT=5
CRAP="blueray|bluray|blu\-ray|remux|dvdrip|xvid|cd[0-9]|dts|vc1|vc\-1|hdtv|1080p|720p|1080i|x264|limited|ac3|hddvd|repack|@|dts\-hd"
CRAP_MISC="\[|\]|\.|\-|\#|\_|\=|\+|\<|\>|\,"

case `uname` in
    'Linux')
        SED_OPTS='-r -e';;
    'Darwin')
        # Mac Default , if you using GNU sed,edit it
        SED_OPTS='-E -e';;
    *)
        ERROR "unknown OS";;
esac

getFileSize(){
    # Fix Me
    ls -nl "$1" | awk '{print $5}'
}

getFileHash(){
    dd if="$file" bs=1 count=4096 skip=$1 2> /dev/null | $MD5 | head -c32
}

stripFileName(){
    echo -e "$(sed $SED_OPTS "s/"$CRAP"//g" -e "s/"$CRAP_MISC"/ /g")"
}

if [ "$1" != 'eng' ]; then
    file="$1"
else
    LANGUAGE='eng'
    file="$2"
fi

[ ! -f "$file" ] && ERROR "Not a File"

filesize=$(getFileSize "$file")

[ $filesize -le 8192 ] && ERROR "Serious?"

filepath="E:\\$(dirname "$file" | sed 's/\//\\\\/g')" # it's just work
filename="$(echo "$(dirname "$file")/$(basename "$file")" | sed 's/\.[^\.]*$//')"
moviename="$(basename "$filename" | tr [A-Z] [a-z] | stripFileName | xargs)"

bin="${filename}.bin"

first=4096
second=$(($filesize/3*2))
third=$(($filesize/3))
fourth=$(($filesize-8192))

filehash="$(getFileHash $first);$(getFileHash $second);$(getFileHash $third);$(getFileHash $fourth)"

for i in $(seq 9)
do
    SERVER="http://splayer$i.shooter.cn/api/subapi.php"

    echo -n "Sending request to $SERVER ..."

    #send request
    curl -s --connect-timeout $TIMEOUT -A "$USERAGENT" \
    -F "pathinfo=$filepath" -F "filehash=$filehash" -F "shortname=$moviename" -F "lang=$LANGUAGE" \
    -o "$bin" "$SERVER"

    if [ $? -eq 0 ]; then
        echo -n -e "OK, Extracting\n"
    else
        echo -n -e "Fail, Switching\n" >&2
        continue
    fi

    # sometimes shooter.cn give zero fuck about your request , so try other
    if [ $(getFileSize "$bin") -le 1024 ]; then
        echo "Bad response from $SERVER, Retry" >&2
        rm "$bin"
        continue
    else
        # get the subtitle filetype
        extname=`dd if="$bin" bs=1 count=7 skip=18 2> /dev/null | sed 's/^.*\(...\)/\1/'`
        sub="$filename.$extname"

        # get the subtitle
        dd if="$bin" of="$sub" bs=1 skip=29 2> /dev/null
        rm "$bin"

        # maybe not handle well , fix me
        gzip=`dd if="$sub" bs=1 count=2 2> /dev/null | hexdump -x | awk '{print $2}'`
        [ "$gzip" = '8b1f' ] && {
            echo "Got gzip here , unzipping ..."
            mv "$sub" "${sub}.tgz"
            gunzip -c "${sub}.tgz" > "$sub"
            rm "${sub}.tgz"
        }
        echo "Got it!"
        exit 0
    fi
done

ERROR "Cannot find the matching subtitle, Sorry!"