--- a/web/captcha.py	Mon Jan 04 18:40:30 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,98 +0,0 @@
-# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
-# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
-#
-# This file is part of CubicWeb.
-#
-# CubicWeb is free software: you can redistribute it and/or modify it under the
-# terms of the GNU Lesser General Public License as published by the Free
-# Software Foundation, either version 2.1 of the License, or (at your option)
-# any later version.
-#
-# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Lesser General Public License along
-# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
-"""Simple captcha library, based on PIL. Monkey patch functions in this module
-if you want something better...
-"""
-
-__docformat__ = "restructuredtext en"
-
-from random import randint, choice
-from io import BytesIO
-
-from six.moves import range
-
-from PIL import Image, ImageFont, ImageDraw, ImageFilter
-
-
-from time import time
-
-from cubicweb import tags
-from cubicweb.web import ProcessFormError, formwidgets as fw
-
-
-def pil_captcha(text, fontfile, fontsize):
-    """Generate a captcha image. Return a PIL image object.
-
-    adapted from http://code.activestate.com/recipes/440588/
-    """
-    # randomly select the foreground color
-    fgcolor = randint(0, 0xffff00)
-    # make the background color the opposite of fgcolor
-    bgcolor = fgcolor ^ 0xffffff
-    # create a font object
-    font = ImageFont.truetype(fontfile, fontsize)
-    # determine dimensions of the text
-    dim = font.getsize(text)
-    # create a new image slightly larger that the text
-    img = Image.new('RGB', (dim[0]+5, dim[1]+5), bgcolor)
-    draw = ImageDraw.Draw(img)
-    # draw 100 random colored boxes on the background
-    x, y = img.size
-    for num in range(100):
-        draw.rectangle((randint(0, x), randint(0, y),
-                        randint(0, x), randint(0, y)),
-                       fill=randint(0, 0xffffff))
-    # add the text to the image
-    draw.text((3, 3), text, font=font, fill=fgcolor)
-    img = img.filter(ImageFilter.EDGE_ENHANCE_MORE)
-    return img
-
-
-def captcha(fontfile, fontsize, size=5, format='JPEG'):
-    """Generate an arbitrary text, return it together with a buffer containing
-    the captcha image for the text
-    """
-    text = u''.join(choice('QWERTYUOPASDFGHJKLZXCVBNM') for i in range(size))
-    img = pil_captcha(text, fontfile, fontsize)
-    out = BytesIO()
-    img.save(out, format)
-    out.seek(0)
-    return text, out
-
-
-class CaptchaWidget(fw.TextInput):
-    def render(self, form, field, renderer=None):
-        # t=int(time()*100) to make sure img is not cached
-        src = form._cw.build_url('view', vid='captcha', t=int(time()*100),
-                                 captchakey=field.input_name(form))
-        img = tags.img(src=src, alt=u'captcha')
-        img = u'<div class="captcha">%s</div>' % img
-        return img + super(CaptchaWidget, self).render(form, field, renderer)
-
-    def process_field_data(self, form, field):
-        captcha = form._cw.session.data.pop(field.input_name(form), None)
-        val = super(CaptchaWidget, self).process_field_data(form, field)
-        if val is None:
-            return val # required will be checked by field
-        if captcha is None:
-            msg = form._cw._('unable to check captcha, please try again')
-            raise ProcessFormError(msg)
-        elif val.lower() != captcha.lower():
-            msg = form._cw._('incorrect captcha value')
-            raise ProcessFormError(msg)
-        return val