mirror of https://github.com/zulip/zulip.git
118 lines
4.9 KiB
Python
118 lines
4.9 KiB
Python
import os
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import re
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import ujson
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from django.utils.translation import ugettext as _
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from typing import Optional, Tuple
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from zerver.lib.request import JsonableError
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from zerver.lib.storage import static_path
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from zerver.lib.upload import upload_backend
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from zerver.lib.exceptions import OrganizationAdministratorRequired
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from zerver.models import Reaction, Realm, RealmEmoji, UserProfile
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EMOJI_PATH = static_path("generated/emoji")
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NAME_TO_CODEPOINT_PATH = os.path.join(EMOJI_PATH, "name_to_codepoint.json")
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CODEPOINT_TO_NAME_PATH = os.path.join(EMOJI_PATH, "codepoint_to_name.json")
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EMOTICON_CONVERSIONS_PATH = os.path.join(EMOJI_PATH, "emoticon_conversions.json")
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with open(NAME_TO_CODEPOINT_PATH) as fp:
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name_to_codepoint = ujson.load(fp)
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with open(CODEPOINT_TO_NAME_PATH) as fp:
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codepoint_to_name = ujson.load(fp)
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with open(EMOTICON_CONVERSIONS_PATH) as fp:
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EMOTICON_CONVERSIONS = ujson.load(fp)
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possible_emoticons = EMOTICON_CONVERSIONS.keys()
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possible_emoticon_regexes = (re.escape(emoticon) for emoticon in possible_emoticons)
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terminal_symbols = ',.;?!()\\[\\] "\'\\n\\t' # from composebox_typeahead.js
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emoticon_regex = ('(?<![^{0}])(?P<emoticon>('.format(terminal_symbols)
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+ ')|('.join(possible_emoticon_regexes)
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+ '))(?![^{0}])'.format(terminal_symbols))
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# Translates emoticons to their colon syntax, e.g. `:smiley:`.
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def translate_emoticons(text: str) -> str:
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translated = text
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for emoticon in EMOTICON_CONVERSIONS:
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translated = re.sub(re.escape(emoticon), EMOTICON_CONVERSIONS[emoticon], translated)
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return translated
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def emoji_name_to_emoji_code(realm: Realm, emoji_name: str) -> Tuple[str, str]:
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realm_emojis = realm.get_active_emoji()
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realm_emoji = realm_emojis.get(emoji_name)
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if realm_emoji is not None:
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return str(realm_emojis[emoji_name]['id']), Reaction.REALM_EMOJI
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if emoji_name == 'zulip':
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return emoji_name, Reaction.ZULIP_EXTRA_EMOJI
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if emoji_name in name_to_codepoint:
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return name_to_codepoint[emoji_name], Reaction.UNICODE_EMOJI
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raise JsonableError(_("Emoji '%s' does not exist") % (emoji_name,))
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def check_emoji_request(realm: Realm, emoji_name: str, emoji_code: str,
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emoji_type: str) -> None:
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# For a given realm and emoji type, checks whether an emoji
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# code is valid for new reactions, or not.
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if emoji_type == "realm_emoji":
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realm_emojis = realm.get_emoji()
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realm_emoji = realm_emojis.get(emoji_code)
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if realm_emoji is None:
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raise JsonableError(_("Invalid custom emoji."))
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if realm_emoji["name"] != emoji_name:
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raise JsonableError(_("Invalid custom emoji name."))
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if realm_emoji["deactivated"]:
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raise JsonableError(_("This custom emoji has been deactivated."))
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elif emoji_type == "zulip_extra_emoji":
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if emoji_code not in ["zulip"]:
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raise JsonableError(_("Invalid emoji code."))
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if emoji_name != emoji_code:
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raise JsonableError(_("Invalid emoji name."))
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elif emoji_type == "unicode_emoji":
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if emoji_code not in codepoint_to_name:
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raise JsonableError(_("Invalid emoji code."))
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if name_to_codepoint.get(emoji_name) != emoji_code:
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raise JsonableError(_("Invalid emoji name."))
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else:
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# The above are the only valid emoji types
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raise JsonableError(_("Invalid emoji type."))
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def check_emoji_admin(user_profile: UserProfile, emoji_name: Optional[str]=None) -> None:
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"""Raises an exception if the user cannot administer the target realm
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emoji name in their organization."""
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# Realm administrators can always administer emoji
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if user_profile.is_realm_admin:
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return
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if user_profile.realm.add_emoji_by_admins_only:
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raise OrganizationAdministratorRequired()
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# Otherwise, normal users can add emoji
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if emoji_name is None:
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return
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# Additionally, normal users can remove emoji they themselves added
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emoji = RealmEmoji.objects.filter(realm=user_profile.realm,
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name=emoji_name,
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deactivated=False).first()
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current_user_is_author = (emoji is not None and
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emoji.author is not None and
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emoji.author.id == user_profile.id)
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if not user_profile.is_realm_admin and not current_user_is_author:
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raise JsonableError(_("Must be an organization administrator or emoji author"))
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def check_valid_emoji_name(emoji_name: str) -> None:
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if re.match(r'^[0-9a-z.\-_]+(?<![.\-_])$', emoji_name):
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return
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raise JsonableError(_("Invalid characters in emoji name"))
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def get_emoji_url(emoji_file_name: str, realm_id: int) -> str:
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return upload_backend.get_emoji_url(emoji_file_name, realm_id)
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def get_emoji_file_name(emoji_file_name: str, emoji_id: int) -> str:
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_, image_ext = os.path.splitext(emoji_file_name)
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return ''.join((str(emoji_id), image_ext))
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