mirror of
https://github.com/LonamiWebs/Telethon.git
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3973755333
This means open()'ed files will have their name used properly, and that you can set b.name = 'somename.jpg' to io.BytesIO() objects to have them uploaded as images.
698 lines
22 KiB
Python
698 lines
22 KiB
Python
"""
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Utilities for working with the Telegram API itself (such as handy methods
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to convert between an entity like an User, Chat, etc. into its Input version)
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"""
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import itertools
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import math
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import mimetypes
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import os
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import re
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import struct
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import types
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from collections import UserList
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from mimetypes import guess_extension
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from .extensions import markdown, html
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from .tl import TLObject
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from .tl.types import (
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Channel, ChannelForbidden, Chat, ChatEmpty, ChatForbidden, ChatFull,
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ChatPhoto, InputPeerChannel, InputPeerChat, InputPeerUser, InputPeerEmpty,
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MessageMediaDocument, MessageMediaPhoto, PeerChannel, InputChannel,
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UserEmpty, InputUser, InputUserEmpty, InputUserSelf, InputPeerSelf,
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PeerChat, PeerUser, User, UserFull, UserProfilePhoto, Document,
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MessageMediaContact, MessageMediaEmpty, MessageMediaGame, MessageMediaGeo,
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MessageMediaUnsupported, MessageMediaVenue, InputMediaContact,
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InputMediaDocument, InputMediaEmpty, InputMediaGame,
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InputMediaGeoPoint, InputMediaPhoto, InputMediaVenue, InputDocument,
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DocumentEmpty, InputDocumentEmpty, Message, GeoPoint, InputGeoPoint,
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GeoPointEmpty, InputGeoPointEmpty, Photo, InputPhoto, PhotoEmpty,
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InputPhotoEmpty, FileLocation, ChatPhotoEmpty, UserProfilePhotoEmpty,
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FileLocationUnavailable, InputMediaUploadedDocument, ChannelFull,
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InputMediaUploadedPhoto, DocumentAttributeFilename, photos,
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TopPeer, InputNotifyPeer, InputMessageID, InputFileLocation,
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InputDocumentFileLocation, PhotoSizeEmpty, InputDialogPeer
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)
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from .tl.types.contacts import ResolvedPeer
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USERNAME_RE = re.compile(
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r'@|(?:https?://)?(?:www\.)?(?:telegram\.(?:me|dog)|t\.me)/(joinchat/)?'
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)
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# The only shorter-than-five-characters usernames are those used for some
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# special, very well known bots. This list may be incomplete though:
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# "[...] @gif, @vid, @pic, @bing, @wiki, @imdb and @bold [...]"
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#
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# See https://telegram.org/blog/inline-bots#how-does-it-work
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VALID_USERNAME_RE = re.compile(
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r'^([a-z]((?!__)[\w\d]){3,30}[a-z\d]'
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r'|gif|vid|pic|bing|wiki|imdb|bold|vote|like|coub|ya)$',
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re.IGNORECASE
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)
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class Default:
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"""
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Sentinel value to indicate that the default value should be used.
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Currently used for the ``parse_mode``, where a ``None`` mode should
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be considered different from using the default.
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"""
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def chunks(iterable, size=100):
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"""
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Turns the given iterable into chunks of the specified size,
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which is 100 by default since that's what Telegram uses the most.
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"""
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it = iter(iterable)
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size -= 1
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for head in it:
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yield itertools.chain([head], itertools.islice(it, size))
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def get_display_name(entity):
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"""
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Gets the display name for the given entity, if it's an :tl:`User`,
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:tl:`Chat` or :tl:`Channel`. Returns an empty string otherwise.
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"""
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if isinstance(entity, User):
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if entity.last_name and entity.first_name:
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return '{} {}'.format(entity.first_name, entity.last_name)
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elif entity.first_name:
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return entity.first_name
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elif entity.last_name:
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return entity.last_name
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else:
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return ''
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elif isinstance(entity, (Chat, Channel)):
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return entity.title
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return ''
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def get_extension(media):
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"""Gets the corresponding extension for any Telegram media."""
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# Photos are always compressed as .jpg by Telegram
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if isinstance(media, (UserProfilePhoto, ChatPhoto, MessageMediaPhoto)):
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return '.jpg'
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# Documents will come with a mime type
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if isinstance(media, MessageMediaDocument):
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media = media.document
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if isinstance(media, Document):
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if media.mime_type == 'application/octet-stream':
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# Octet stream are just bytes, which have no default extension
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return ''
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else:
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return guess_extension(media.mime_type) or ''
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return ''
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def _raise_cast_fail(entity, target):
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raise TypeError('Cannot cast {} to any kind of {}.'.format(
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type(entity).__name__, target))
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def get_input_peer(entity, allow_self=True):
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"""
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Gets the input peer for the given "entity" (user, chat or channel).
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A ``TypeError`` is raised if the given entity isn't a supported type.
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"""
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try:
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if entity.SUBCLASS_OF_ID == 0xc91c90b6: # crc32(b'InputPeer')
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return entity
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except AttributeError:
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# e.g. custom.Dialog (can't cyclic import).
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if allow_self and hasattr(entity, 'input_entity'):
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return entity.input_entity
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elif hasattr(entity, 'entity'):
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return get_input_peer(entity.entity)
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else:
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_raise_cast_fail(entity, 'InputPeer')
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if isinstance(entity, User):
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if entity.is_self and allow_self:
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return InputPeerSelf()
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else:
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return InputPeerUser(entity.id, entity.access_hash or 0)
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if isinstance(entity, (Chat, ChatEmpty, ChatForbidden)):
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return InputPeerChat(entity.id)
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if isinstance(entity, (Channel, ChannelForbidden)):
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return InputPeerChannel(entity.id, entity.access_hash or 0)
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if isinstance(entity, InputUser):
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return InputPeerUser(entity.user_id, entity.access_hash)
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if isinstance(entity, InputChannel):
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return InputPeerChannel(entity.channel_id, entity.access_hash)
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if isinstance(entity, InputUserSelf):
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return InputPeerSelf()
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if isinstance(entity, UserEmpty):
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return InputPeerEmpty()
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if isinstance(entity, UserFull):
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return get_input_peer(entity.user)
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if isinstance(entity, ChatFull):
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return InputPeerChat(entity.id)
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if isinstance(entity, PeerChat):
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return InputPeerChat(entity.chat_id)
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_raise_cast_fail(entity, 'InputPeer')
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def get_input_channel(entity):
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"""Similar to :meth:`get_input_peer`, but for :tl:`InputChannel`'s alone."""
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try:
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if entity.SUBCLASS_OF_ID == 0x40f202fd: # crc32(b'InputChannel')
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return entity
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except AttributeError:
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_raise_cast_fail(entity, 'InputChannel')
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if isinstance(entity, (Channel, ChannelForbidden)):
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return InputChannel(entity.id, entity.access_hash or 0)
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if isinstance(entity, InputPeerChannel):
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return InputChannel(entity.channel_id, entity.access_hash)
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_raise_cast_fail(entity, 'InputChannel')
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def get_input_user(entity):
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"""Similar to :meth:`get_input_peer`, but for :tl:`InputUser`'s alone."""
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try:
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if entity.SUBCLASS_OF_ID == 0xe669bf46: # crc32(b'InputUser'):
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return entity
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except AttributeError:
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_raise_cast_fail(entity, 'InputUser')
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if isinstance(entity, User):
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if entity.is_self:
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return InputUserSelf()
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else:
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return InputUser(entity.id, entity.access_hash or 0)
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if isinstance(entity, InputPeerSelf):
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return InputUserSelf()
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if isinstance(entity, (UserEmpty, InputPeerEmpty)):
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return InputUserEmpty()
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if isinstance(entity, UserFull):
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return get_input_user(entity.user)
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if isinstance(entity, InputPeerUser):
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return InputUser(entity.user_id, entity.access_hash)
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_raise_cast_fail(entity, 'InputUser')
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def get_input_dialog(dialog):
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"""Similar to :meth:`get_input_peer`, but for dialogs"""
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try:
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if dialog.SUBCLASS_OF_ID == 0xa21c9795: # crc32(b'InputDialogPeer')
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return dialog
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if dialog.SUBCLASS_OF_ID == 0xc91c90b6: # crc32(b'InputPeer')
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return InputDialogPeer(dialog)
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except AttributeError:
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_raise_cast_fail(dialog, 'InputDialogPeer')
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try:
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return InputDialogPeer(get_input_peer(dialog))
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except TypeError:
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pass
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_raise_cast_fail(dialog, 'InputDialogPeer')
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def get_input_document(document):
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"""Similar to :meth:`get_input_peer`, but for documents"""
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try:
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if document.SUBCLASS_OF_ID == 0xf33fdb68: # crc32(b'InputDocument'):
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return document
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except AttributeError:
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_raise_cast_fail(document, 'InputDocument')
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if isinstance(document, Document):
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return InputDocument(id=document.id, access_hash=document.access_hash)
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if isinstance(document, DocumentEmpty):
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return InputDocumentEmpty()
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if isinstance(document, MessageMediaDocument):
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return get_input_document(document.document)
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if isinstance(document, Message):
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return get_input_document(document.media)
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_raise_cast_fail(document, 'InputDocument')
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def get_input_photo(photo):
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"""Similar to :meth:`get_input_peer`, but for photos"""
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try:
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if photo.SUBCLASS_OF_ID == 0x846363e0: # crc32(b'InputPhoto'):
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return photo
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except AttributeError:
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_raise_cast_fail(photo, 'InputPhoto')
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if isinstance(photo, photos.Photo):
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photo = photo.photo
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if isinstance(photo, Photo):
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return InputPhoto(id=photo.id, access_hash=photo.access_hash)
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if isinstance(photo, PhotoEmpty):
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return InputPhotoEmpty()
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_raise_cast_fail(photo, 'InputPhoto')
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def get_input_geo(geo):
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"""Similar to :meth:`get_input_peer`, but for geo points"""
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try:
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if geo.SUBCLASS_OF_ID == 0x430d225: # crc32(b'InputGeoPoint'):
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return geo
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except AttributeError:
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_raise_cast_fail(geo, 'InputGeoPoint')
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if isinstance(geo, GeoPoint):
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return InputGeoPoint(lat=geo.lat, long=geo.long)
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if isinstance(geo, GeoPointEmpty):
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return InputGeoPointEmpty()
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if isinstance(geo, MessageMediaGeo):
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return get_input_geo(geo.geo)
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if isinstance(geo, Message):
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return get_input_geo(geo.media)
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_raise_cast_fail(geo, 'InputGeoPoint')
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def get_input_media(media, is_photo=False):
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"""
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Similar to :meth:`get_input_peer`, but for media.
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If the media is a file location and ``is_photo`` is known to be ``True``,
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it will be treated as an :tl:`InputMediaUploadedPhoto`.
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"""
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try:
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if media.SUBCLASS_OF_ID == 0xfaf846f4: # crc32(b'InputMedia')
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return media
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elif media.SUBCLASS_OF_ID == 0x846363e0: # crc32(b'InputPhoto')
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return InputMediaPhoto(media)
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elif media.SUBCLASS_OF_ID == 0xf33fdb68: # crc32(b'InputDocument')
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return InputMediaDocument(media)
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except AttributeError:
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_raise_cast_fail(media, 'InputMedia')
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if isinstance(media, MessageMediaPhoto):
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return InputMediaPhoto(
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id=get_input_photo(media.photo),
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ttl_seconds=media.ttl_seconds
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)
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if isinstance(media, (Photo, photos.Photo, PhotoEmpty)):
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return InputMediaPhoto(
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id=get_input_photo(media)
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)
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if isinstance(media, MessageMediaDocument):
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return InputMediaDocument(
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id=get_input_document(media.document),
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ttl_seconds=media.ttl_seconds
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)
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if isinstance(media, (Document, DocumentEmpty)):
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return InputMediaDocument(
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id=get_input_document(media)
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)
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if isinstance(media, FileLocation):
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if is_photo:
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return InputMediaUploadedPhoto(file=media)
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else:
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return InputMediaUploadedDocument(
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file=media,
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mime_type='application/octet-stream', # unknown, assume bytes
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attributes=[DocumentAttributeFilename('unnamed')]
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)
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if isinstance(media, MessageMediaGame):
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return InputMediaGame(id=media.game.id)
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if isinstance(media, (ChatPhoto, UserProfilePhoto)):
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if isinstance(media.photo_big, FileLocationUnavailable):
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media = media.photo_small
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else:
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media = media.photo_big
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return get_input_media(media, is_photo=True)
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if isinstance(media, MessageMediaContact):
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return InputMediaContact(
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phone_number=media.phone_number,
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first_name=media.first_name,
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last_name=media.last_name
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)
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if isinstance(media, MessageMediaGeo):
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return InputMediaGeoPoint(geo_point=get_input_geo(media.geo))
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if isinstance(media, MessageMediaVenue):
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return InputMediaVenue(
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geo_point=get_input_geo(media.geo),
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title=media.title,
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address=media.address,
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provider=media.provider,
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venue_id=media.venue_id,
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venue_type=''
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)
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if isinstance(media, (
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MessageMediaEmpty, MessageMediaUnsupported,
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ChatPhotoEmpty, UserProfilePhotoEmpty, FileLocationUnavailable)):
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return InputMediaEmpty()
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if isinstance(media, Message):
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return get_input_media(media.media, is_photo=is_photo)
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_raise_cast_fail(media, 'InputMedia')
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def get_input_message(message):
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"""Similar to :meth:`get_input_peer`, but for input messages."""
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try:
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if isinstance(message, int): # This case is really common too
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return InputMessageID(message)
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elif message.SUBCLASS_OF_ID == 0x54b6bcc5: # crc32(b'InputMessage'):
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return message
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elif message.SUBCLASS_OF_ID == 0x790009e3: # crc32(b'Message'):
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return InputMessageID(message.id)
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except AttributeError:
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pass
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_raise_cast_fail(message, 'InputMedia')
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def get_message_id(message):
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"""Sanitizes the 'reply_to' parameter a user may send"""
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if message is None:
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return None
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if isinstance(message, int):
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return message
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if hasattr(message, 'original_message'):
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return message.original_message.id
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try:
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if message.SUBCLASS_OF_ID == 0x790009e3:
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# hex(crc32(b'Message')) = 0x790009e3
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return message.id
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except AttributeError:
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pass
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raise TypeError('Invalid message type: {}'.format(type(message)))
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def sanitize_parse_mode(mode):
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"""
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Converts the given parse mode into an object with
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``parse`` and ``unparse`` callable properties.
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"""
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if not mode:
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return None
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if callable(mode):
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class CustomMode:
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@staticmethod
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def unparse(text, entities):
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raise NotImplementedError
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CustomMode.parse = mode
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return CustomMode
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elif (all(hasattr(mode, x) for x in ('parse', 'unparse'))
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and all(callable(x) for x in (mode.parse, mode.unparse))):
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return mode
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elif isinstance(mode, str):
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try:
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return {
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'md': markdown,
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'markdown': markdown,
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'htm': html,
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'html': html
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}[mode.lower()]
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except KeyError:
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raise ValueError('Unknown parse mode {}'.format(mode))
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else:
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raise TypeError('Invalid parse mode type {}'.format(mode))
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def get_input_location(location):
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"""Similar to :meth:`get_input_peer`, but for input messages."""
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try:
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if location.SUBCLASS_OF_ID == 0x1523d462:
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return location # crc32(b'InputFileLocation'):
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except AttributeError:
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_raise_cast_fail(location, 'InputFileLocation')
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if isinstance(location, Message):
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location = location.media
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if isinstance(location, MessageMediaDocument):
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location = location.document
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elif isinstance(location, MessageMediaPhoto):
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location = location.photo
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if isinstance(location, Document):
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return InputDocumentFileLocation(
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location.id, location.access_hash, location.version)
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elif isinstance(location, Photo):
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try:
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location = next(x for x in reversed(location.sizes)
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if not isinstance(x, PhotoSizeEmpty)).location
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except StopIteration:
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pass
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if isinstance(location, (FileLocation, FileLocationUnavailable)):
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return InputFileLocation(
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location.volume_id, location.local_id, location.secret)
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_raise_cast_fail(location, 'InputFileLocation')
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def _get_extension(file):
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"""
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Gets the extension for the given file, which can be either a
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str or an ``open()``'ed file (which has a ``.name`` attribute).
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"""
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if isinstance(file, str):
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return os.path.splitext(file)[-1]
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elif getattr(file, 'name', None):
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return _get_extension(file.name)
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else:
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return ''
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def is_image(file):
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"""
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Returns ``True`` if the file extension looks like an image file to Telegram.
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"""
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return re.match(r'\.(png|jpe?g)', _get_extension(file), re.IGNORECASE)
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|
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def is_audio(file):
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"""Returns ``True`` if the file extension looks like an audio file."""
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file = 'a' + _get_extension(file)
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return (mimetypes.guess_type(file)[0] or '').startswith('audio/')
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def is_video(file):
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"""Returns ``True`` if the file extension looks like a video file."""
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file = 'a' + _get_extension(file)
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return (mimetypes.guess_type(file)[0] or '').startswith('video/')
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def is_list_like(obj):
|
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"""
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Returns ``True`` if the given object looks like a list.
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Checking ``if hasattr(obj, '__iter__')`` and ignoring ``str/bytes`` is not
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enough. Things like ``open()`` are also iterable (and probably many
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other things), so just support the commonly known list-like objects.
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"""
|
|
return isinstance(obj, (list, tuple, set, dict,
|
|
UserList, types.GeneratorType))
|
|
|
|
|
|
def parse_phone(phone):
|
|
"""Parses the given phone, or returns ``None`` if it's invalid."""
|
|
if isinstance(phone, int):
|
|
return str(phone)
|
|
else:
|
|
phone = re.sub(r'[+()\s-]', '', str(phone))
|
|
if phone.isdigit():
|
|
return phone
|
|
|
|
|
|
def parse_username(username):
|
|
"""Parses the given username or channel access hash, given
|
|
a string, username or URL. Returns a tuple consisting of
|
|
both the stripped, lowercase username and whether it is
|
|
a joinchat/ hash (in which case is not lowercase'd).
|
|
|
|
Returns ``None`` if the ``username`` is not valid.
|
|
"""
|
|
username = username.strip()
|
|
m = USERNAME_RE.match(username)
|
|
if m:
|
|
username = username[m.end():]
|
|
is_invite = bool(m.group(1))
|
|
if is_invite:
|
|
return username, True
|
|
else:
|
|
username = username.rstrip('/')
|
|
|
|
if VALID_USERNAME_RE.match(username):
|
|
return username.lower(), False
|
|
else:
|
|
return None, False
|
|
|
|
|
|
def _fix_peer_id(peer_id):
|
|
"""
|
|
Fixes the peer ID for chats and channels, in case the users
|
|
mix marking the ID with the :tl:`Peer` constructors.
|
|
"""
|
|
peer_id = abs(peer_id)
|
|
if str(peer_id).startswith('100'):
|
|
peer_id = str(peer_id)[3:]
|
|
return int(peer_id)
|
|
|
|
|
|
def add_surrogate(text):
|
|
return ''.join(
|
|
# SMP -> Surrogate Pairs (Telegram offsets are calculated with these).
|
|
# See https://en.wikipedia.org/wiki/Plane_(Unicode)#Overview for more.
|
|
''.join(chr(y) for y in struct.unpack('<HH', x.encode('utf-16le')))
|
|
if (0x10000 <= ord(x) <= 0x10FFFF) else x for x in text
|
|
)
|
|
|
|
|
|
def del_surrogate(text):
|
|
return text.encode('utf-16', 'surrogatepass').decode('utf-16')
|
|
|
|
|
|
def get_inner_text(text, entities):
|
|
"""
|
|
Gets the inner text that's surrounded by the given entities.
|
|
For instance: text = 'hey!', entity = MessageEntityBold(2, 2) -> 'y!'.
|
|
|
|
:param text: the original text.
|
|
:param entities: the entity or entities that must be matched.
|
|
:return: a single result or a list of the text surrounded by the entities.
|
|
"""
|
|
text = add_surrogate(text)
|
|
result = []
|
|
for e in entities:
|
|
start = e.offset
|
|
end = e.offset + e.length
|
|
result.append(del_surrogate(text[start:end]))
|
|
|
|
return result
|
|
|
|
|
|
def get_peer_id(peer):
|
|
"""
|
|
Finds the ID of the given peer, and converts it to the "bot api" format
|
|
so it the peer can be identified back. User ID is left unmodified,
|
|
chat ID is negated, and channel ID is prefixed with -100.
|
|
|
|
The original ID and the peer type class can be returned with
|
|
a call to :meth:`resolve_id(marked_id)`.
|
|
"""
|
|
# First we assert it's a Peer TLObject, or early return for integers
|
|
if isinstance(peer, int):
|
|
return peer
|
|
|
|
try:
|
|
if peer.SUBCLASS_OF_ID not in (0x2d45687, 0xc91c90b6):
|
|
if isinstance(peer, (ResolvedPeer, InputNotifyPeer, TopPeer)):
|
|
peer = peer.peer
|
|
else:
|
|
# Not a Peer or an InputPeer, so first get its Input version
|
|
peer = get_input_peer(peer, allow_self=False)
|
|
except AttributeError:
|
|
_raise_cast_fail(peer, 'int')
|
|
|
|
# Set the right ID/kind, or raise if the TLObject is not recognised
|
|
if isinstance(peer, (PeerUser, InputPeerUser)):
|
|
return peer.user_id
|
|
elif isinstance(peer, (PeerChat, InputPeerChat)):
|
|
# Check in case the user mixed things up to avoid blowing up
|
|
if not (0 < peer.chat_id <= 0x7fffffff):
|
|
peer.chat_id = _fix_peer_id(peer.chat_id)
|
|
|
|
return -peer.chat_id
|
|
elif isinstance(peer, (PeerChannel, InputPeerChannel, ChannelFull)):
|
|
if isinstance(peer, ChannelFull):
|
|
# Special case: .get_input_peer can't return InputChannel from
|
|
# ChannelFull since it doesn't have an .access_hash attribute.
|
|
i = peer.id
|
|
else:
|
|
i = peer.channel_id
|
|
|
|
# Check in case the user mixed things up to avoid blowing up
|
|
if not (0 < i <= 0x7fffffff):
|
|
i = _fix_peer_id(i)
|
|
if isinstance(peer, ChannelFull):
|
|
peer.id = i
|
|
else:
|
|
peer.channel_id = i
|
|
|
|
# Concat -100 through math tricks, .to_supergroup() on Madeline
|
|
# IDs will be strictly positive -> log works
|
|
return -(i + pow(10, math.floor(math.log10(i) + 3)))
|
|
|
|
_raise_cast_fail(peer, 'int')
|
|
|
|
|
|
def resolve_id(marked_id):
|
|
"""Given a marked ID, returns the original ID and its :tl:`Peer` type."""
|
|
if marked_id >= 0:
|
|
return marked_id, PeerUser
|
|
|
|
# There have been report of chat IDs being 10000xyz, which means their
|
|
# marked version is -10000xyz, which in turn looks like a channel but
|
|
# it becomes 00xyz (= xyz). Hence, we must assert that there are only
|
|
# two zeroes.
|
|
m = re.match(r'-100([^0]\d*)', str(marked_id))
|
|
if m:
|
|
return int(m.group(1)), PeerChannel
|
|
|
|
return -marked_id, PeerChat
|
|
|
|
|
|
def get_appropriated_part_size(file_size):
|
|
"""
|
|
Gets the appropriated part size when uploading or downloading files,
|
|
given an initial file size.
|
|
"""
|
|
if file_size <= 104857600: # 100MB
|
|
return 128
|
|
if file_size <= 786432000: # 750MB
|
|
return 256
|
|
if file_size <= 1572864000: # 1500MB
|
|
return 512
|
|
|
|
raise ValueError('File size too large')
|