deploy login & reCaptcha

apps/captcha_app/api/v1/utils.py

@@ -0,0 +1,71 @@
+import os.path
+import random
+
+from rest_captcha.settings import api_settings as settings
+from django.conf import settings as django_setting
+from django.core.cache import caches
+from rest_captcha import captcha
+from PIL import ImageFont, ImageDraw, Image
+from io import BytesIO as StringIO
+
+cache = caches[settings.CAPTCHA_CACHE]
+
+path = os.path.dirname(__file__) + '/'  # noqa
+
+
+def random_char_challenge(length):
+    chars = '123456789'
+    ret = ''
+    for i in range(length):
+        ret += random.choice(chars)
+    return ret.upper()
+
+
+def generate_image(word):
+    font = ImageFont.load_default()
+    size = settings.CAPTCHA_IMAGE_SIZE
+
+    xpos = 2
+    from_top = 4
+
+    image = captcha.makeimg(size)
+
+    for char in word:
+        fgimage = Image.new('RGB', size, settings.CAPTCHA_FOREGROUND_COLOR)
+        charimage = Image.new('L', captcha.getsize(font, ' %s ' % char), '#000000')
+        chardraw = ImageDraw.Draw(charimage)
+        chardraw.text((0, 0), char, font=font, fill='#ffffff')
+
+        charimage = charimage.crop(charimage.getbbox())
+        maskimage = Image.new('L', size)
+
+        xpos2 = xpos + charimage.size[0]
+        from_top2 = from_top + charimage.size[1]
+        maskimage.paste(charimage, (xpos, from_top, xpos2, from_top2))
+        size = maskimage.size
+        image = Image.composite(fgimage, image, maskimage)
+        xpos = xpos + 2 + charimage.size[0]
+
+    if settings.CAPTCHA_IMAGE_SIZE:
+        # centering captcha on the image
+        tmpimg = captcha.makeimg(size)
+        xpos2 = int((size[0] - xpos) / 2)
+        from_top2 = int((size[1] - charimage.size[1]) / 2 - from_top)
+        tmpimg.paste(image, (xpos2, from_top2))
+        image = tmpimg.crop((0, 0, size[0], size[1]))
+    else:
+        image = image.crop((0, 0, xpos + 1, size[1]))
+
+    draw = ImageDraw.Draw(image)
+
+    # settings.FILTER_FUNCTION(image)
+    settings.NOISE_FUNCTION(image, draw)
+
+    out = StringIO()
+    image.save(out, 'PNG')
+    # image.save('ss.png', 'PNG')
+    content = out.getvalue()
+    out.seek(0)
+    out.close()
+
+    return content