Programming 2

This challenge involves taking an image that has morse code embeded in it. We have to take that image, decode the morse code quickly.

#!/bin/bash
mv /root/Desktop/PNG.htm 1.png
convert 1.png 1.bmp
OUTPUT=`./solve.py`
./decode.sh $OUTPUT

So we need a bitmap first, we need to extract the morse using solve.py, and then use decode.sh to decode the morse.

#!/usr//bin/python
import Image
import sys
im = Image.open("1.bmp")
newnumber = 0
oldnumber = 0
counter = 0
width = range(0,100)
hight = range(0,29)
for each2 in hight:
        for each1 in width:
                it = im.getpixel((each1,each2))
                if it == 255:
                        newnumber = counter
                        print chr(newnumber-oldnumber),
                        sys.stdout.softspace = 0
                        oldnumber = newnumber
                counter = counter + 1

This code extracts the morse code. Decode.sh is a bunch of sed that converts the dots and dashes into real letters:

MORE=`echo $* | tr "." "0"`
MORE="$MORE
     \n"
echo  $MORE | tr . 0 | sed -e {s/0----\ /1/g} -e {s/00---\ /2/g} -e {s/000--\ /3/g} -e {s/000-\ /4/g} -e {s/00000\ /5/g} -e {s/-0000\ /6/g} -e {s/--000\ /7/g} -e {s/---00\ /8/g} -e {s/----0\ /9/g} -e {s/-----\ /0/g} \
        | sed -e {s/-0-0\ /c/g} -e {s/-000\ /b/g} -e {s/00-0\ /f/g} -e {s/0000\ /h/g} -e {s/0---\ /j/g} -e {s/0-00\ /l/g} -e {s/0--0\ /p/g} -e {s/--0-\ /q/g} -e {s/000-\ /v/g} -e {s/-00-\ /x/g} -e {s/-0--\ /y/g} -e {s/--00\ /z/g} \
        | sed -e {s/0--\ /w/g} -e {s/-00\ /d/g} -e {s/--0\ /g/g} -e {s/-0-\ /k/g} -e {s/---\ /o/g} -e {s/0-0\ /r/g} -e {s/000\ /s/g} -e {s/00-\ /u/g} \
        | sed -e {s/0-\ /a/g} -e {s/00\ /i/g} -e {s/--\ /m/g} -e {s/-0\ /n/g} \
        | sed -e {s/0\ /e/g} -e {s/-\ /t/g}

echo

A zip with all the code: File:Prog2.zip