from django.contrib.auth.models import User
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from django.conf import settings
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from hc.accounts.models import Profile
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from hc.accounts.views import _make_user
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class BasicBackend(object):
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def get_user(self, user_id):
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try:
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q = User.objects.select_related("profile")
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return q.get(pk=user_id)
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except User.DoesNotExist:
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return None
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# Authenticate against the token in user's profile.
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class ProfileBackend(BasicBackend):
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def authenticate(self, request=None, username=None, token=None):
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try:
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profiles = Profile.objects.select_related("user")
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profile = profiles.get(user__username=username)
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except Profile.DoesNotExist:
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return None
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if not profile.check_token(token, "login"):
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return None
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return profile.user
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class EmailBackend(BasicBackend):
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def authenticate(self, request=None, username=None, password=None):
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try:
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user = User.objects.get(email=username)
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except User.DoesNotExist:
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return None
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if user.check_password(password):
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return user
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class CustomHeaderBackend(BasicBackend):
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"""
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This backend works in conjunction with the ``CustomHeaderMiddleware``,
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and is used when the server is handling authentication outside of Django.
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"""
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def authenticate(self, request, remote_user_email):
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"""
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The email address passed as remote_user_email is considered trusted.
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Return the User object with the given email address. Create a new User
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if it does not exist.
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"""
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# This backend should only be used when header-based authentication is enabled
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assert settings.REMOTE_USER_HEADER
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# remote_user_email should have a value
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assert remote_user_email
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try:
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user = User.objects.get(email=remote_user_email)
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except User.DoesNotExist:
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user = _make_user(remote_user_email)
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return user
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