def captcha_audio(request, key):
if not settings.CAPTCHA['FLITE_PATH']:
raise Http404()
store = get(key)
challenge, response = store.split('\x00')
if 'captcha.helpers.math_challenge' == settings.CAPTCHA['CHALLENGE_FUNCT']:
challenge = challenge.replace('*', 'times').replace('-', 'minus')
else:
challenge = ', '.join(list(challenge))
path = str(os.path.join(tempfile.gettempdir(), '%s.wav' % key))
cline = '%s -t "%s" -o "%s"' % (settings.CAPTCHA['FLITE_PATH'], challenge, path)
os.popen(cline).read()
if os.path.isfile(path):
response = HttpResponse()
f = open(path, 'rb')
response['Content-Type'] = 'audio/x-wav'
response.write(f.read())
f.close()
os.unlink(path)
return response
def captcha_image(request, key, scale=1):
store = get(key)
challenge, response = store.split('\x00')
if settings.CAPTCHA['FONT_PATH'].lower().strip().endswith('ttf'):
font = ImageFont.truetype(settings.CAPTCHA['FONT_PATH'], settings.CAPTCHA['FONT_SIZE'] * scale)
else:
font = ImageFont.load(settings.CAPTCHA['FONT_PATH'])
size = getsize(font, challenge)
size = (size[0] * 2, int(size[1] * 1.4))
image = Image.new('RGB', size, settings.CAPTCHA['BACKGROUND_COLOR'])
try:
PIL_VERSION = int(NON_DIGITS_RX.sub('', Image.VERSION))
except:
PIL_VERSION = 116
xpos = 2
charlist = []
for char in challenge:
if char in settings.CAPTCHA['PUNCTUATION'] and len(charlist) >= 1:
charlist[-1] += char
else:
charlist.append(char)
for char in charlist:
fgimage = Image.new('RGB', size, settings.CAPTCHA['FOREGROUND_COLOR'])
charimage = Image.new('L', getsize(font, ' %s ' % char), '#000000')
chardraw = ImageDraw.Draw(charimage)
chardraw.text((0, 0), ' %s ' % char, font=font, fill='#ffffff')
if settings.CAPTCHA['LETTER_ROTATION']:
if PIL_VERSION >= 116:
charimage = charimage.rotate(random.randrange(*settings.CAPTCHA['LETTER_ROTATION']), expand=0, resample=Image.BICUBIC)
else:
charimage = charimage.rotate(random.randrange(*settings.CAPTCHA['LETTER_ROTATION']), resample=Image.BICUBIC)
charimage = charimage.crop(charimage.getbbox())
maskimage = Image.new('L', size)
maskimage.paste(charimage, (xpos, from_top, xpos + charimage.size[0], from_top + charimage.size[1]))
size = maskimage.size
image = Image.composite(fgimage, image, maskimage)
xpos = xpos + 2 + charimage.size[0]
image = image.crop((0, 0, xpos + 1, size[1]))
draw = ImageDraw.Draw(image)
for f in settings.noise_functions():
draw = f(draw, image)
for f in settings.filter_functions():
image = f(image)
out = StringIO()
image.save(out, "PNG")
out.seek(0)
response = HttpResponse(content_type='image/png')
response.write(out.read())
response['Content-length'] = out.tell()
return response
