50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
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from django.http import HttpResponse, HttpResponseRedirect
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from PIL import Image
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from lemoncurry import utils
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from .models import User
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def try_libravatar_org(hash, get):
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url = 'https://seccdn.libravatar.org/avatar/' + hash
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if get:
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url += '?' + get.urlencode()
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return HttpResponseRedirect(url)
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def libravatar(request, hash):
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g = request.GET
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size = g.get('s', g.get('size', 80))
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try:
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size = int(size)
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except ValueError:
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return utils.bad_req('size parameter must be an integer')
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if not 1 <= size <= 128:
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return utils.bad_req('size parameter must be between 1 and 128')
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if len(hash) == 32:
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where = {'email_md5': hash}
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elif len(hash) == 64:
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where = {'email_sha256': hash}
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else:
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return utils.bad_req('hash must be either md5 or sha256')
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# If the user doesn't exist or lacks an avatar, see if libravatar.org has
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# one for them - libravatar.org falls back to Gravatar when possible (only
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# for MD5 hashes, since Gravatar doesn't support SHA-256), so this ensures
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# all the most likely places are checked.
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try:
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user = User.objects.get(**where)
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except User.DoesNotExist:
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return try_libravatar_org(hash, g)
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if not user.avatar:
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return try_libravatar_org(hash, g)
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im = Image.open(user.avatar)
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im_resized = im.resize((size, size))
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response = HttpResponse(content_type='image/'+im.format.lower())
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im_resized.save(response, im.format)
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return response
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