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df001db1a9
Black 23 enforces some slightly more specific rules about empty line counts and redundant parenthesis removal, but the result is still compatible with Black 22. (This does not actually upgrade our Python environment to Black 23 yet.) Signed-off-by: Anders Kaseorg <anders@zulip.com>
43 lines
1.7 KiB
Python
43 lines
1.7 KiB
Python
import hashlib
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from django.conf import settings
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from zerver.lib.utils import make_safe_digest
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from zerver.models import UserProfile
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def gravatar_hash(email: str) -> str:
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"""Compute the Gravatar hash for an email address."""
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# Non-ASCII characters aren't permitted by the currently active e-mail
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# RFCs. However, the IETF has published https://tools.ietf.org/html/rfc4952,
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# outlining internationalization of email addresses, and regardless if we
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# typo an address or someone manages to give us a non-ASCII address, let's
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# not error out on it.
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return make_safe_digest(email.lower(), hashlib.md5)
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def user_avatar_hash(uid: str) -> str:
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# WARNING: If this method is changed, you may need to do a migration
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# similar to zerver/migrations/0060_move_avatars_to_be_uid_based.py .
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# The salt probably doesn't serve any purpose now. In the past we
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# used a hash of the email address, not the user ID, and we salted
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# it in order to make the hashing scheme different from Gravatar's.
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user_key = uid + settings.AVATAR_SALT
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return make_safe_digest(user_key, hashlib.sha1)
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def user_avatar_path(user_profile: UserProfile) -> str:
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# WARNING: If this method is changed, you may need to do a migration
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# similar to zerver/migrations/0060_move_avatars_to_be_uid_based.py .
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return user_avatar_path_from_ids(user_profile.id, user_profile.realm_id)
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def user_avatar_path_from_ids(user_profile_id: int, realm_id: int) -> str:
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user_id_hash = user_avatar_hash(str(user_profile_id))
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return f"{str(realm_id)}/{user_id_hash}"
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def user_avatar_content_hash(ldap_avatar: bytes) -> str:
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return hashlib.sha256(ldap_avatar).hexdigest()
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