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56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
from typing import IO
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import django.db.utils
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from django.utils.translation import gettext as _
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from zerver.lib.emoji import get_emoji_file_name
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from zerver.lib.exceptions import JsonableError
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from zerver.lib.pysa import mark_sanitized
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from zerver.lib.upload import upload_emoji_image
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from zerver.models import Realm, RealmEmoji, UserProfile, active_user_ids
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from zerver.tornado.django_api import send_event
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def notify_realm_emoji(realm: Realm) -> None:
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event = dict(type="realm_emoji", op="update", realm_emoji=realm.get_emoji())
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send_event(realm, event, active_user_ids(realm.id))
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def check_add_realm_emoji(
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realm: Realm, name: str, author: UserProfile, image_file: IO[bytes]
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) -> RealmEmoji:
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try:
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realm_emoji = RealmEmoji(realm=realm, name=name, author=author)
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realm_emoji.full_clean()
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realm_emoji.save()
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except django.db.utils.IntegrityError:
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# Match the string in upload_emoji.
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raise JsonableError(_("A custom emoji with this name already exists."))
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emoji_file_name = get_emoji_file_name(image_file.name, realm_emoji.id)
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# The only user-controlled portion of 'emoji_file_name' is an extension,
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# which can not contain '..' or '/' or '\', making it difficult to exploit
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emoji_file_name = mark_sanitized(emoji_file_name)
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emoji_uploaded_successfully = False
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is_animated = False
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try:
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is_animated = upload_emoji_image(image_file, emoji_file_name, author)
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emoji_uploaded_successfully = True
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finally:
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if not emoji_uploaded_successfully:
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realm_emoji.delete()
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realm_emoji.file_name = emoji_file_name
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realm_emoji.is_animated = is_animated
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realm_emoji.save(update_fields=["file_name", "is_animated"])
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notify_realm_emoji(realm_emoji.realm)
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return realm_emoji
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def do_remove_realm_emoji(realm: Realm, name: str) -> None:
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emoji = RealmEmoji.objects.get(realm=realm, name=name, deactivated=False)
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emoji.deactivated = True
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emoji.save(update_fields=["deactivated"])
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notify_realm_emoji(realm)
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