Эли выложил ломалку капчей для del.icio.us, он же делишес.

Точно, Эли жжет не по детски. Только выкарабкался из под ддоса - новый подарок халявщикам - This is the del.icio.us captcha busted in Python.

На случай нового ддоса - копирую на мой блог под катом.




#!/usr/bin/python
import Image,time,random,glob,re,os,sys

##$$
train = raw_input("train? (y/n)")
if(train == "y") : train= True
else: train = False
##
fileName = ''.join(sys.argv[1:])
def getNeighbourhood(i,width,height,pixels):
results = []
try:
if(pixels[i+1] != 0): results.append(i+1)
if(pixels[i-1] != 0): results.append(i-1)
if(pixels[i-width] != 0): results.append(i-width)
if(pixels[i+width] != 0): results.append(i+width)
if(pixels[i-width+1] != 0): results.append(i-width+1)
if(pixels[i+width+1] != 0): results.append(i+width+1)
if(pixels[i-width-1] != 0): results.append(i-width-1)
if(pixels[i+width-1] != 0): results.append(i+width-1)
except:pass
return results
now = time.time()
captcha = Image.open(fileName)
(width,height) = captcha.size
pixels = list(captcha.getdata())
i=0
for pixel in pixels:
if (pixel == 2): pixels[i] = 0
i+=1
toclean = []
for i in xrange(len(pixels)):
neighbourhood = getNeighbourhood(i,width,height,pixels)
if (len(neighbourhood) < 4) : pixels[i] = 0

captcha.putdata(pixels)
started=False
lowestY,highestY,count = 0,10000,0
captchas = []
slant = 15
for x in xrange(width):
hasBlack = False
for y in xrange(height):
thisPixel = captcha.getpixel((x,y))
if(thisPixel != 0):
if(started == False):
started=True
firstX = x
firstY = y
else:
lastX = x
if(y > lowestY): lowestY = y
if(y< highestY): highestY = y
hasBlack = True
if((hasBlack == False) and (started==True)):
if((lowestY - highestY) > 4):
croppingBox = (firstX,highestY,lastX,lowestY)
newCaptcha = captcha.crop(croppingBox)
if(train):
text = raw_input(”char:n”)
try: os.mkdir(”/home/dbyte/deliciousImages/” + text)
except:pass
text__ = “/home/dbyte/deliciousImages/” + text + “/” + str(random.randint(1,100000)) + “-.png”
newCaptcha.resize((20,30)).save(text__)
text_ = “/home/dbyte/deliciousImages/” + text + “/” + str(random.randint(1,100000)) + “-.png”
newCaptcha.resize((20,30)).rotate(slant).save(text_)
text_ = “/home/dbyte/deliciousImages/” + text + “/” + str(random.randint(1,100000)) + “-.png”
newCaptcha.resize((20,30)).rotate(360 - slant).save(text_)
captchas.append(Image.open(text__))
else:
#text = str(count)
#text = “tmp-delicious-” + text + “.png”
#newCaptcha.save(text)
captchas.append(newCaptcha.resize((20,30)))

started=False
lowestY,highestY = 0,10000
count +=1
if(train == False):

imageFolders = os.listdir(”/home/dbyte/deliciousImages/”)
images =[]
for imageFolder in imageFolders:
imageFiles = glob.glob(”/home/dbyte/deliciousImages/” + imageFolder + “/*.png”)
for imageFile in imageFiles:
pixels = list(Image.open(imageFile).getdata())
for i in xrange(len(pixels)):
if pixels[i] != 0: pixels[i] = 1
images.append((pixels,imageFolder))

crackedString = “”
for captcha in captchas:
bestSum,bestChar = 0,”"
captchaPixels = list(captcha.getdata())
for i in xrange(len(captchaPixels)):
if captchaPixels[i] != 0: captchaPixels[i] = 1
for imageAll in images:
thisSum = 0
pixels = imageAll[0]
for i in xrange(len(captchaPixels)):
try:
if(captchaPixels[i] == pixels[i]): thisSum+=1
except: pass
if(thisSum > bestSum):
bestSum = thisSum
bestChar = imageAll[1]
crackedString += bestChar
print crackedString
#print “time taken: ” + str(time.time() - now)


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