mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2025-02-05 06:01:02 +03:00
219b4ecb77
Makes upload_file cleaner (context manager instead of try-finally) and helps keep the logic "we may own this stream and need to close it or not" separated. It can be overengineered to allow nesting the same instance in context managers and also provide implementations for synchronous context managers but it adds quite a bit of unnecessary complexity for the time being. YAGNI.
1432 lines
49 KiB
Python
1432 lines
49 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 a User, Chat, etc. into its Input version)
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"""
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import base64
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import binascii
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import imghdr
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import inspect
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import io
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import itertools
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import logging
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import math
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import mimetypes
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import os
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import pathlib
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import re
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import struct
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from collections import namedtuple
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from mimetypes import guess_extension
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from types import GeneratorType
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from .extensions import markdown, html
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from .helpers import add_surrogate, del_surrogate
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from .tl import types
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try:
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import hachoir
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import hachoir.metadata
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import hachoir.parser
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except ImportError:
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hachoir = None
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# Register some of the most common mime-types to avoid any issues.
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# See https://github.com/LonamiWebs/Telethon/issues/1096.
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mimetypes.add_type('image/png', '.png')
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mimetypes.add_type('image/jpeg', '.jpeg')
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mimetypes.add_type('image/webp', '.webp')
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mimetypes.add_type('image/gif', '.gif')
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mimetypes.add_type('image/bmp', '.bmp')
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mimetypes.add_type('image/x-tga', '.tga')
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mimetypes.add_type('image/tiff', '.tiff')
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mimetypes.add_type('image/vnd.adobe.photoshop', '.psd')
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mimetypes.add_type('video/mp4', '.mp4')
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mimetypes.add_type('video/quicktime', '.mov')
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mimetypes.add_type('video/avi', '.avi')
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mimetypes.add_type('audio/mpeg', '.mp3')
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mimetypes.add_type('audio/m4a', '.m4a')
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mimetypes.add_type('audio/aac', '.aac')
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mimetypes.add_type('audio/ogg', '.ogg')
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mimetypes.add_type('audio/flac', '.flac')
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mimetypes.add_type('application/x-tgsticker', '.tgs')
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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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TG_JOIN_RE = re.compile(
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r'tg://(join)\?invite='
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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){3,30}[a-z\d]'
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r'|gif|vid|pic|bing|wiki|imdb|bold|vote|like|coub)$',
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re.IGNORECASE
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)
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_FileInfo = namedtuple('FileInfo', 'dc_id location size')
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_log = logging.getLogger(__name__)
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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 :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, types.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, (types.Chat, types.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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try:
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get_input_photo(media)
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return '.jpg'
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except TypeError:
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# These cases are not handled by input photo because it can't
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if isinstance(media, (types.UserProfilePhoto, types.ChatPhoto)):
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return '.jpg'
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# Documents will come with a mime type
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if isinstance(media, types.MessageMediaDocument):
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media = media.document
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if isinstance(media, (
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types.Document, types.WebDocument, types.WebDocumentNoProxy)):
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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, check_hash=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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or if ``check_hash is True`` but the entity's ``access_hash is None``
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*or* the entity contains ``min`` information. In this case, the hash
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cannot be used for general purposes, and thus is not returned to avoid
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any issues which can derive from invalid access hashes.
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Note that ``check_hash`` **is ignored** if an input peer is already
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passed since in that case we assume the user knows what they're doing.
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This is key to getting entities by explicitly passing ``hash = 0``.
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"""
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# NOTE: It is important that this method validates the access hashes,
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# because it is used when we *require* a valid general-purpose
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# access hash. This includes caching, which relies on this method.
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# Further, when resolving raw methods, they do e.g.,
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# utils.get_input_channel(client.get_input_peer(...))
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#
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# ...which means that the client's method verifies the hashes.
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#
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# Excerpt from a conversation with official developers (slightly edited):
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# > We send new access_hash for Channel with min flag since layer 102.
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# > Previously, we omitted it.
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# > That one works just to download the profile picture.
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#
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# < So, min hashes only work for getting files,
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# < but the non-min hash is required for any other operation?
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#
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# > Yes.
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#
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# More information: https://core.telegram.org/api/min
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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, types.User):
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if entity.is_self and allow_self:
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return types.InputPeerSelf()
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elif (entity.access_hash is not None and not entity.min) or not check_hash:
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return types.InputPeerUser(entity.id, entity.access_hash)
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else:
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raise TypeError('User without access_hash or min info cannot be input')
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if isinstance(entity, (types.Chat, types.ChatEmpty, types.ChatForbidden)):
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return types.InputPeerChat(entity.id)
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if isinstance(entity, types.Channel):
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if (entity.access_hash is not None and not entity.min) or not check_hash:
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return types.InputPeerChannel(entity.id, entity.access_hash)
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else:
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raise TypeError('Channel without access_hash or min info cannot be input')
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if isinstance(entity, types.ChannelForbidden):
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# "channelForbidden are never min", and since their hash is
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# also not optional, we assume that this truly is the case.
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return types.InputPeerChannel(entity.id, entity.access_hash)
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if isinstance(entity, types.InputUser):
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return types.InputPeerUser(entity.user_id, entity.access_hash)
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if isinstance(entity, types.InputChannel):
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return types.InputPeerChannel(entity.channel_id, entity.access_hash)
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if isinstance(entity, types.InputUserSelf):
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return types.InputPeerSelf()
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if isinstance(entity, types.InputUserFromMessage):
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return types.InputPeerUserFromMessage(entity.peer, entity.msg_id, entity.user_id)
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if isinstance(entity, types.InputChannelFromMessage):
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return types.InputPeerChannelFromMessage(entity.peer, entity.msg_id, entity.channel_id)
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if isinstance(entity, types.UserEmpty):
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return types.InputPeerEmpty()
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if isinstance(entity, types.UserFull):
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return get_input_peer(entity.user)
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if isinstance(entity, types.ChatFull):
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return types.InputPeerChat(entity.id)
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if isinstance(entity, types.PeerChat):
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return types.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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"""
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Similar to :meth:`get_input_peer`, but for :tl:`InputChannel`'s alone.
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.. important::
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This method does not validate for invalid general-purpose access
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hashes, unlike `get_input_peer`. Consider using instead:
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``get_input_channel(get_input_peer(channel))``.
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"""
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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, (types.Channel, types.ChannelForbidden)):
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return types.InputChannel(entity.id, entity.access_hash or 0)
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if isinstance(entity, types.InputPeerChannel):
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return types.InputChannel(entity.channel_id, entity.access_hash)
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if isinstance(entity, types.InputPeerChannelFromMessage):
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return types.InputChannelFromMessage(entity.peer, entity.msg_id, entity.channel_id)
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_raise_cast_fail(entity, 'InputChannel')
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def get_input_user(entity):
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"""
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Similar to :meth:`get_input_peer`, but for :tl:`InputUser`'s alone.
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.. important::
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This method does not validate for invalid general-purpose access
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hashes, unlike `get_input_peer`. Consider using instead:
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``get_input_channel(get_input_peer(channel))``.
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"""
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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, types.User):
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if entity.is_self:
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return types.InputUserSelf()
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else:
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return types.InputUser(entity.id, entity.access_hash or 0)
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if isinstance(entity, types.InputPeerSelf):
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return types.InputUserSelf()
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if isinstance(entity, (types.UserEmpty, types.InputPeerEmpty)):
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return types.InputUserEmpty()
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if isinstance(entity, types.UserFull):
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return get_input_user(entity.user)
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if isinstance(entity, types.InputPeerUser):
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return types.InputUser(entity.user_id, entity.access_hash)
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if isinstance(entity, types.InputPeerUserFromMessage):
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return types.InputUserFromMessage(entity.peer, entity.msg_id, entity.user_id)
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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 types.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 types.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, types.Document):
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return types.InputDocument(
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id=document.id, access_hash=document.access_hash,
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file_reference=document.file_reference)
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if isinstance(document, types.DocumentEmpty):
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return types.InputDocumentEmpty()
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if isinstance(document, types.MessageMediaDocument):
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return get_input_document(document.document)
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if isinstance(document, types.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, types.Message):
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photo = photo.media
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if isinstance(photo, (types.photos.Photo, types.MessageMediaPhoto)):
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photo = photo.photo
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if isinstance(photo, types.Photo):
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return types.InputPhoto(id=photo.id, access_hash=photo.access_hash,
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file_reference=photo.file_reference)
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if isinstance(photo, types.PhotoEmpty):
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return types.InputPhotoEmpty()
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if isinstance(photo, types.messages.ChatFull):
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photo = photo.full_chat
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if isinstance(photo, types.ChannelFull):
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return get_input_photo(photo.chat_photo)
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elif isinstance(photo, types.UserFull):
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return get_input_photo(photo.profile_photo)
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elif isinstance(photo, (types.Channel, types.Chat, types.User)):
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return get_input_photo(photo.photo)
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if isinstance(photo, (types.UserEmpty, types.ChatEmpty,
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types.ChatForbidden, types.ChannelForbidden)):
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return types.InputPhotoEmpty()
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_raise_cast_fail(photo, 'InputPhoto')
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|
|
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def get_input_chat_photo(photo):
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"""Similar to :meth:`get_input_peer`, but for chat photos"""
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try:
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if photo.SUBCLASS_OF_ID == 0xd4eb2d74: # crc32(b'InputChatPhoto')
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return photo
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elif photo.SUBCLASS_OF_ID == 0xe7655f1f: # crc32(b'InputFile'):
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return types.InputChatUploadedPhoto(photo)
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except AttributeError:
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_raise_cast_fail(photo, 'InputChatPhoto')
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photo = get_input_photo(photo)
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if isinstance(photo, types.InputPhoto):
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return types.InputChatPhoto(photo)
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elif isinstance(photo, types.InputPhotoEmpty):
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return types.InputChatPhotoEmpty()
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_raise_cast_fail(photo, 'InputChatPhoto')
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|
|
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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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|
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if isinstance(geo, types.GeoPoint):
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return types.InputGeoPoint(lat=geo.lat, long=geo.long)
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if isinstance(geo, types.GeoPointEmpty):
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return types.InputGeoPointEmpty()
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if isinstance(geo, types.MessageMediaGeo):
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return get_input_geo(geo.geo)
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if isinstance(geo, types.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(
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media, *,
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is_photo=False, attributes=None, force_document=False,
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voice_note=False, video_note=False, supports_streaming=False
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):
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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 :tl:`InputFile` and ``is_photo`` is known to be `True`,
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it will be treated as an :tl:`InputMediaUploadedPhoto`. Else, the rest
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of parameters will indicate how to treat it.
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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 types.InputMediaPhoto(media)
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elif media.SUBCLASS_OF_ID == 0xf33fdb68: # crc32(b'InputDocument')
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return types.InputMediaDocument(media)
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except AttributeError:
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_raise_cast_fail(media, 'InputMedia')
|
|
|
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if isinstance(media, types.MessageMediaPhoto):
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|
return types.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, (types.Photo, types.photos.Photo, types.PhotoEmpty)):
|
|
return types.InputMediaPhoto(
|
|
id=get_input_photo(media)
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|
)
|
|
|
|
if isinstance(media, types.MessageMediaDocument):
|
|
return types.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, (types.Document, types.DocumentEmpty)):
|
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return types.InputMediaDocument(
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id=get_input_document(media)
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)
|
|
|
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if isinstance(media, (types.InputFile, types.InputFileBig)):
|
|
if is_photo:
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return types.InputMediaUploadedPhoto(file=media)
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|
else:
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|
attrs, mime = get_attributes(
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media,
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attributes=attributes,
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force_document=force_document,
|
|
voice_note=voice_note,
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|
video_note=video_note,
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|
supports_streaming=supports_streaming
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)
|
|
return types.InputMediaUploadedDocument(
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file=media, mime_type=mime, attributes=attrs, force_file=force_document)
|
|
|
|
if isinstance(media, types.MessageMediaGame):
|
|
return types.InputMediaGame(id=types.InputGameID(
|
|
id=media.game.id,
|
|
access_hash=media.game.access_hash
|
|
))
|
|
|
|
if isinstance(media, types.MessageMediaContact):
|
|
return types.InputMediaContact(
|
|
phone_number=media.phone_number,
|
|
first_name=media.first_name,
|
|
last_name=media.last_name,
|
|
vcard=''
|
|
)
|
|
|
|
if isinstance(media, types.MessageMediaGeo):
|
|
return types.InputMediaGeoPoint(geo_point=get_input_geo(media.geo))
|
|
|
|
if isinstance(media, types.MessageMediaVenue):
|
|
return types.InputMediaVenue(
|
|
geo_point=get_input_geo(media.geo),
|
|
title=media.title,
|
|
address=media.address,
|
|
provider=media.provider,
|
|
venue_id=media.venue_id,
|
|
venue_type=''
|
|
)
|
|
|
|
if isinstance(media, types.MessageMediaDice):
|
|
return types.InputMediaDice(media.emoticon)
|
|
|
|
if isinstance(media, (
|
|
types.MessageMediaEmpty, types.MessageMediaUnsupported,
|
|
types.ChatPhotoEmpty, types.UserProfilePhotoEmpty,
|
|
types.ChatPhoto, types.UserProfilePhoto,
|
|
types.FileLocationToBeDeprecated)):
|
|
return types.InputMediaEmpty()
|
|
|
|
if isinstance(media, types.Message):
|
|
return get_input_media(media.media, is_photo=is_photo)
|
|
|
|
if isinstance(media, types.MessageMediaPoll):
|
|
if media.poll.quiz:
|
|
if not media.results.results:
|
|
# A quiz has correct answers, which we don't know until answered.
|
|
# If the quiz hasn't been answered we can't reconstruct it properly.
|
|
raise TypeError('Cannot cast unanswered quiz to any kind of InputMedia.')
|
|
|
|
correct_answers = [r.option for r in media.results.results if r.correct]
|
|
else:
|
|
correct_answers = None
|
|
|
|
return types.InputMediaPoll(
|
|
poll=media.poll,
|
|
correct_answers=correct_answers,
|
|
solution=media.results.solution,
|
|
solution_entities=media.results.solution_entities,
|
|
)
|
|
|
|
if isinstance(media, types.Poll):
|
|
return types.InputMediaPoll(media)
|
|
|
|
_raise_cast_fail(media, 'InputMedia')
|
|
|
|
|
|
def get_input_message(message):
|
|
"""Similar to :meth:`get_input_peer`, but for input messages."""
|
|
try:
|
|
if isinstance(message, int): # This case is really common too
|
|
return types.InputMessageID(message)
|
|
elif message.SUBCLASS_OF_ID == 0x54b6bcc5: # crc32(b'InputMessage'):
|
|
return message
|
|
elif message.SUBCLASS_OF_ID == 0x790009e3: # crc32(b'Message'):
|
|
return types.InputMessageID(message.id)
|
|
except AttributeError:
|
|
pass
|
|
|
|
_raise_cast_fail(message, 'InputMedia')
|
|
|
|
|
|
def _get_entity_pair(entity_id, entities, cache,
|
|
get_input_peer=get_input_peer):
|
|
"""
|
|
Returns ``(entity, input_entity)`` for the given entity ID.
|
|
"""
|
|
entity = entities.get(entity_id)
|
|
try:
|
|
input_entity = cache[entity_id]
|
|
except KeyError:
|
|
# KeyError is unlikely, so another TypeError won't hurt
|
|
try:
|
|
input_entity = get_input_peer(entity)
|
|
except TypeError:
|
|
input_entity = None
|
|
|
|
return entity, input_entity
|
|
|
|
|
|
def get_message_id(message):
|
|
"""Similar to :meth:`get_input_peer`, but for message IDs."""
|
|
if message is None:
|
|
return None
|
|
|
|
if isinstance(message, int):
|
|
return message
|
|
|
|
try:
|
|
if message.SUBCLASS_OF_ID == 0x790009e3:
|
|
# hex(crc32(b'Message')) = 0x790009e3
|
|
return message.id
|
|
except AttributeError:
|
|
pass
|
|
|
|
raise TypeError('Invalid message type: {}'.format(type(message)))
|
|
|
|
|
|
def _get_metadata(file):
|
|
if not hachoir:
|
|
return
|
|
|
|
stream = None
|
|
close_stream = True
|
|
seekable = True
|
|
|
|
# The parser may fail and we don't want to crash if
|
|
# the extraction process fails.
|
|
try:
|
|
# Note: aiofiles are intentionally left out for simplicity.
|
|
# `helpers._FileStream` is async only for simplicity too, so can't
|
|
# reuse it here.
|
|
if isinstance(file, str):
|
|
stream = open(file, 'rb')
|
|
elif isinstance(file, bytes):
|
|
stream = io.BytesIO(file)
|
|
else:
|
|
stream = file
|
|
close_stream = False
|
|
if getattr(file, 'seekable', None):
|
|
seekable = file.seekable()
|
|
else:
|
|
seekable = False
|
|
|
|
if not seekable:
|
|
return None
|
|
|
|
pos = stream.tell()
|
|
filename = getattr(file, 'name', '')
|
|
|
|
parser = hachoir.parser.guess.guessParser(hachoir.stream.InputIOStream(
|
|
stream,
|
|
source='file:' + filename,
|
|
tags=[],
|
|
filename=filename
|
|
))
|
|
|
|
return hachoir.metadata.extractMetadata(parser)
|
|
|
|
except Exception as e:
|
|
_log.warning('Failed to analyze %s: %s %s', file, e.__class__, e)
|
|
|
|
finally:
|
|
if stream and close_stream:
|
|
stream.close()
|
|
elif stream and seekable:
|
|
stream.seek(pos)
|
|
|
|
|
|
def get_attributes(file, *, attributes=None, mime_type=None,
|
|
force_document=False, voice_note=False, video_note=False,
|
|
supports_streaming=False):
|
|
"""
|
|
Get a list of attributes for the given file and
|
|
the mime type as a tuple ([attribute], mime_type).
|
|
"""
|
|
# Note: ``file.name`` works for :tl:`InputFile` and some `IOBase` streams
|
|
name = file if isinstance(file, str) else getattr(file, 'name', 'unnamed')
|
|
if mime_type is None:
|
|
mime_type = mimetypes.guess_type(name)[0]
|
|
|
|
attr_dict = {types.DocumentAttributeFilename:
|
|
types.DocumentAttributeFilename(os.path.basename(name))}
|
|
|
|
if is_audio(file):
|
|
m = _get_metadata(file)
|
|
if m:
|
|
attr_dict[types.DocumentAttributeAudio] = \
|
|
types.DocumentAttributeAudio(
|
|
voice=voice_note,
|
|
title=m.get('title') if m.has('title') else None,
|
|
performer=m.get('author') if m.has('author') else None,
|
|
duration=int(m.get('duration').seconds
|
|
if m.has('duration') else 0)
|
|
)
|
|
|
|
if not force_document and is_video(file):
|
|
m = _get_metadata(file)
|
|
if m:
|
|
doc = types.DocumentAttributeVideo(
|
|
round_message=video_note,
|
|
w=m.get('width') if m.has('width') else 0,
|
|
h=m.get('height') if m.has('height') else 0,
|
|
duration=int(m.get('duration').seconds
|
|
if m.has('duration') else 0),
|
|
supports_streaming=supports_streaming
|
|
)
|
|
else:
|
|
doc = types.DocumentAttributeVideo(
|
|
0, 1, 1, round_message=video_note,
|
|
supports_streaming=supports_streaming)
|
|
|
|
attr_dict[types.DocumentAttributeVideo] = doc
|
|
|
|
if voice_note:
|
|
if types.DocumentAttributeAudio in attr_dict:
|
|
attr_dict[types.DocumentAttributeAudio].voice = True
|
|
else:
|
|
attr_dict[types.DocumentAttributeAudio] = \
|
|
types.DocumentAttributeAudio(0, voice=True)
|
|
|
|
# Now override the attributes if any. As we have a dict of
|
|
# {cls: instance}, we can override any class with the list
|
|
# of attributes provided by the user easily.
|
|
if attributes:
|
|
for a in attributes:
|
|
attr_dict[type(a)] = a
|
|
|
|
# Ensure we have a mime type, any; but it cannot be None
|
|
# 'The "octet-stream" subtype is used to indicate that a body
|
|
# contains arbitrary binary data.'
|
|
if not mime_type:
|
|
mime_type = 'application/octet-stream'
|
|
|
|
return list(attr_dict.values()), mime_type
|
|
|
|
|
|
def sanitize_parse_mode(mode):
|
|
"""
|
|
Converts the given parse mode into an object with
|
|
``parse`` and ``unparse`` callable properties.
|
|
"""
|
|
if not mode:
|
|
return None
|
|
|
|
if callable(mode):
|
|
class CustomMode:
|
|
@staticmethod
|
|
def unparse(text, entities):
|
|
raise NotImplementedError
|
|
|
|
CustomMode.parse = mode
|
|
return CustomMode
|
|
elif (all(hasattr(mode, x) for x in ('parse', 'unparse'))
|
|
and all(callable(x) for x in (mode.parse, mode.unparse))):
|
|
return mode
|
|
elif isinstance(mode, str):
|
|
try:
|
|
return {
|
|
'md': markdown,
|
|
'markdown': markdown,
|
|
'htm': html,
|
|
'html': html
|
|
}[mode.lower()]
|
|
except KeyError:
|
|
raise ValueError('Unknown parse mode {}'.format(mode))
|
|
else:
|
|
raise TypeError('Invalid parse mode type {}'.format(mode))
|
|
|
|
|
|
def get_input_location(location):
|
|
"""
|
|
Similar to :meth:`get_input_peer`, but for input messages.
|
|
|
|
Note that this returns a tuple ``(dc_id, location)``, the
|
|
``dc_id`` being present if known.
|
|
"""
|
|
info = _get_file_info(location)
|
|
return info.dc_id, info.location
|
|
|
|
|
|
def _get_file_info(location):
|
|
try:
|
|
if location.SUBCLASS_OF_ID == 0x1523d462:
|
|
return _FileInfo(None, location, None) # crc32(b'InputFileLocation'):
|
|
except AttributeError:
|
|
_raise_cast_fail(location, 'InputFileLocation')
|
|
|
|
if isinstance(location, types.Message):
|
|
location = location.media
|
|
|
|
if isinstance(location, types.MessageMediaDocument):
|
|
location = location.document
|
|
elif isinstance(location, types.MessageMediaPhoto):
|
|
location = location.photo
|
|
|
|
if isinstance(location, types.Document):
|
|
return _FileInfo(location.dc_id, types.InputDocumentFileLocation(
|
|
id=location.id,
|
|
access_hash=location.access_hash,
|
|
file_reference=location.file_reference,
|
|
thumb_size='' # Presumably to download one of its thumbnails
|
|
), location.size)
|
|
elif isinstance(location, types.Photo):
|
|
return _FileInfo(location.dc_id, types.InputPhotoFileLocation(
|
|
id=location.id,
|
|
access_hash=location.access_hash,
|
|
file_reference=location.file_reference,
|
|
thumb_size=location.sizes[-1].type
|
|
), _photo_size_byte_count(location.sizes[-1]))
|
|
|
|
if isinstance(location, types.FileLocationToBeDeprecated):
|
|
raise TypeError('Unavailable location cannot be used as input')
|
|
|
|
_raise_cast_fail(location, 'InputFileLocation')
|
|
|
|
|
|
def _get_extension(file):
|
|
"""
|
|
Gets the extension for the given file, which can be either a
|
|
str or an ``open()``'ed file (which has a ``.name`` attribute).
|
|
"""
|
|
if isinstance(file, str):
|
|
return os.path.splitext(file)[-1]
|
|
elif isinstance(file, pathlib.Path):
|
|
return file.suffix
|
|
elif isinstance(file, bytes):
|
|
kind = imghdr.what(io.BytesIO(file))
|
|
return ('.' + kind) if kind else ''
|
|
elif isinstance(file, io.IOBase) and not isinstance(file, io.TextIOBase) and file.seekable():
|
|
kind = imghdr.what(file)
|
|
return ('.' + kind) if kind is not None else ''
|
|
elif getattr(file, 'name', None):
|
|
# Note: ``file.name`` works for :tl:`InputFile` and some `IOBase`
|
|
return _get_extension(file.name)
|
|
else:
|
|
# Maybe it's a Telegram media
|
|
return get_extension(file)
|
|
|
|
|
|
def is_image(file):
|
|
"""
|
|
Returns `True` if the file extension looks like an image file to Telegram.
|
|
"""
|
|
match = re.match(r'\.(png|jpe?g)', _get_extension(file), re.IGNORECASE)
|
|
if match:
|
|
return True
|
|
else:
|
|
return isinstance(resolve_bot_file_id(file), types.Photo)
|
|
|
|
|
|
def is_gif(file):
|
|
"""
|
|
Returns `True` if the file extension looks like a gif file to Telegram.
|
|
"""
|
|
return re.match(r'\.gif', _get_extension(file), re.IGNORECASE)
|
|
|
|
|
|
def is_audio(file):
|
|
"""Returns `True` if the file has an audio mime type."""
|
|
ext = _get_extension(file)
|
|
if not ext:
|
|
metadata = _get_metadata(file)
|
|
if metadata and metadata.has('mime_type'):
|
|
return metadata.get('mime_type').startswith('audio/')
|
|
else:
|
|
return False
|
|
else:
|
|
file = 'a' + ext
|
|
return (mimetypes.guess_type(file)[0] or '').startswith('audio/')
|
|
|
|
|
|
def is_video(file):
|
|
"""Returns `True` if the file has a video mime type."""
|
|
ext = _get_extension(file)
|
|
if not ext:
|
|
metadata = _get_metadata(file)
|
|
if metadata and metadata.has('mime_type'):
|
|
return metadata.get('mime_type').startswith('video/')
|
|
else:
|
|
return False
|
|
else:
|
|
file = 'a' + ext
|
|
return (mimetypes.guess_type(file)[0] or '').startswith('video/')
|
|
|
|
|
|
def is_list_like(obj):
|
|
"""
|
|
Returns `True` if the given object looks like a list.
|
|
|
|
Checking ``if hasattr(obj, '__iter__')`` and ignoring ``str/bytes`` is not
|
|
enough. Things like ``open()`` are also iterable (and probably many
|
|
other things), so just support the commonly known list-like objects.
|
|
"""
|
|
return isinstance(obj, (list, tuple, set, dict, 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, False)`` if the ``username`` or link is not valid.
|
|
"""
|
|
username = username.strip()
|
|
m = USERNAME_RE.match(username) or TG_JOIN_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 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(peer):
|
|
try:
|
|
if isinstance(peer, int):
|
|
pid, cls = resolve_id(peer)
|
|
return cls(pid)
|
|
elif peer.SUBCLASS_OF_ID == 0x2d45687:
|
|
return peer
|
|
elif isinstance(peer, (
|
|
types.contacts.ResolvedPeer, types.InputNotifyPeer,
|
|
types.TopPeer, types.Dialog, types.DialogPeer)):
|
|
return peer.peer
|
|
elif isinstance(peer, types.ChannelFull):
|
|
return types.PeerChannel(peer.id)
|
|
|
|
if peer.SUBCLASS_OF_ID in (0x7d7c6f86, 0xd9c7fc18):
|
|
# ChatParticipant, ChannelParticipant
|
|
return types.PeerUser(peer.user_id)
|
|
|
|
peer = get_input_peer(peer, allow_self=False, check_hash=False)
|
|
if isinstance(peer, (types.InputPeerUser, types.InputPeerUserFromMessage)):
|
|
return types.PeerUser(peer.user_id)
|
|
elif isinstance(peer, types.InputPeerChat):
|
|
return types.PeerChat(peer.chat_id)
|
|
elif isinstance(peer, (types.InputPeerChannel, types.InputPeerChannelFromMessage)):
|
|
return types.PeerChannel(peer.channel_id)
|
|
except (AttributeError, TypeError):
|
|
pass
|
|
_raise_cast_fail(peer, 'Peer')
|
|
|
|
|
|
def get_peer_id(peer, add_mark=True):
|
|
"""
|
|
Convert the given peer into its marked ID by default.
|
|
|
|
This "mark" comes from the "bot api" format, and with it the peer type
|
|
can be identified back. User ID is left unmodified, chat ID is negated,
|
|
and channel ID is prefixed with -100:
|
|
|
|
* ``user_id``
|
|
* ``-chat_id``
|
|
* ``-100channel_id``
|
|
|
|
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 if add_mark else resolve_id(peer)[0]
|
|
|
|
# Tell the user to use their client to resolve InputPeerSelf if we got one
|
|
if isinstance(peer, types.InputPeerSelf):
|
|
_raise_cast_fail(peer, 'int (you might want to use client.get_peer_id)')
|
|
|
|
try:
|
|
peer = get_peer(peer)
|
|
except TypeError:
|
|
_raise_cast_fail(peer, 'int')
|
|
|
|
if isinstance(peer, types.PeerUser):
|
|
return peer.user_id
|
|
elif isinstance(peer, types.PeerChat):
|
|
# Check in case the user mixed things up to avoid blowing up
|
|
if not (0 < peer.chat_id <= 0x7fffffff):
|
|
peer.chat_id = resolve_id(peer.chat_id)[0]
|
|
|
|
return -peer.chat_id if add_mark else peer.chat_id
|
|
else: # if isinstance(peer, types.PeerChannel):
|
|
# Check in case the user mixed things up to avoid blowing up
|
|
if not (0 < peer.channel_id <= 0x7fffffff):
|
|
peer.channel_id = resolve_id(peer.channel_id)[0]
|
|
|
|
if not add_mark:
|
|
return peer.channel_id
|
|
|
|
# Concat -100 through math tricks, .to_supergroup() on
|
|
# Madeline IDs will be strictly positive -> log works.
|
|
try:
|
|
return -(peer.channel_id + pow(
|
|
10, math.floor(math.log10(peer.channel_id) + 3)))
|
|
except ValueError:
|
|
raise TypeError('Cannot get marked ID of a channel '
|
|
'unless its ID is strictly positive') from None
|
|
|
|
|
|
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, types.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)), types.PeerChannel
|
|
|
|
return -marked_id, types.PeerChat
|
|
|
|
|
|
def _rle_decode(data):
|
|
"""
|
|
Decodes run-length-encoded `data`.
|
|
"""
|
|
if not data:
|
|
return data
|
|
|
|
new = b''
|
|
last = b''
|
|
for cur in data:
|
|
if last == b'\0':
|
|
new += last * cur
|
|
last = b''
|
|
else:
|
|
new += last
|
|
last = bytes([cur])
|
|
|
|
return new + last
|
|
|
|
|
|
def _rle_encode(string):
|
|
new = b''
|
|
count = 0
|
|
for cur in string:
|
|
if not cur:
|
|
count += 1
|
|
else:
|
|
if count:
|
|
new += b'\0' + bytes([count])
|
|
count = 0
|
|
|
|
new += bytes([cur])
|
|
return new
|
|
|
|
|
|
def _decode_telegram_base64(string):
|
|
"""
|
|
Decodes an url-safe base64-encoded string into its bytes
|
|
by first adding the stripped necessary padding characters.
|
|
|
|
This is the way Telegram shares binary data as strings,
|
|
such as Bot API-style file IDs or invite links.
|
|
|
|
Returns `None` if the input string was not valid.
|
|
"""
|
|
try:
|
|
return base64.urlsafe_b64decode(string + '=' * (len(string) % 4))
|
|
except (binascii.Error, ValueError, TypeError):
|
|
return None # not valid base64, not valid ascii, not a string
|
|
|
|
|
|
def _encode_telegram_base64(string):
|
|
"""
|
|
Inverse for `_decode_telegram_base64`.
|
|
"""
|
|
try:
|
|
return base64.urlsafe_b64encode(string).rstrip(b'=').decode('ascii')
|
|
except (binascii.Error, ValueError, TypeError):
|
|
return None # not valid base64, not valid ascii, not a string
|
|
|
|
|
|
def resolve_bot_file_id(file_id):
|
|
"""
|
|
Given a Bot API-style `file_id <telethon.tl.custom.file.File.id>`,
|
|
returns the media it represents. If the `file_id <telethon.tl.custom.file.File.id>`
|
|
is not valid, `None` is returned instead.
|
|
|
|
Note that the `file_id <telethon.tl.custom.file.File.id>` does not have information
|
|
such as image dimensions or file size, so these will be zero if present.
|
|
|
|
For thumbnails, the photo ID and hash will always be zero.
|
|
"""
|
|
data = _rle_decode(_decode_telegram_base64(file_id))
|
|
if not data:
|
|
return None
|
|
|
|
# This isn't officially documented anywhere, but
|
|
# we assume the last byte is some kind of "version".
|
|
data, version = data[:-1], data[-1]
|
|
if version not in (2, 4):
|
|
return None
|
|
|
|
if (version == 2 and len(data) == 24) or (version == 4 and len(data) == 25):
|
|
if version == 2:
|
|
file_type, dc_id, media_id, access_hash = struct.unpack('<iiqq', data)
|
|
# elif version == 4:
|
|
else:
|
|
# TODO Figure out what the extra byte means
|
|
file_type, dc_id, media_id, access_hash, _ = struct.unpack('<iiqqb', data)
|
|
|
|
if not (1 <= dc_id <= 5):
|
|
# Valid `file_id`'s must have valid DC IDs. Since this method is
|
|
# called when sending a file and the user may have entered a path
|
|
# they believe is correct but the file doesn't exist, this method
|
|
# may detect a path as "valid" bot `file_id` even when it's not.
|
|
# By checking the `dc_id`, we greatly reduce the chances of this
|
|
# happening.
|
|
return None
|
|
|
|
attributes = []
|
|
if file_type == 3 or file_type == 9:
|
|
attributes.append(types.DocumentAttributeAudio(
|
|
duration=0,
|
|
voice=file_type == 3
|
|
))
|
|
elif file_type == 4 or file_type == 13:
|
|
attributes.append(types.DocumentAttributeVideo(
|
|
duration=0,
|
|
w=0,
|
|
h=0,
|
|
round_message=file_type == 13
|
|
))
|
|
# elif file_type == 5: # other, cannot know which
|
|
elif file_type == 8:
|
|
attributes.append(types.DocumentAttributeSticker(
|
|
alt='',
|
|
stickerset=types.InputStickerSetEmpty()
|
|
))
|
|
elif file_type == 10:
|
|
attributes.append(types.DocumentAttributeAnimated())
|
|
|
|
return types.Document(
|
|
id=media_id,
|
|
access_hash=access_hash,
|
|
date=None,
|
|
mime_type='',
|
|
size=0,
|
|
thumbs=None,
|
|
dc_id=dc_id,
|
|
attributes=attributes,
|
|
file_reference=b''
|
|
)
|
|
elif (version == 2 and len(data) == 44) or (version == 4 and len(data) == 49):
|
|
if version == 2:
|
|
(file_type, dc_id, media_id, access_hash,
|
|
volume_id, secret, local_id) = struct.unpack('<iiqqqqi', data)
|
|
# elif version == 4:
|
|
else:
|
|
# TODO Figure out what the extra five bytes mean
|
|
(file_type, dc_id, media_id, access_hash,
|
|
volume_id, secret, local_id, _) = struct.unpack('<iiqqqqi5s', data)
|
|
|
|
if not (1 <= dc_id <= 5):
|
|
return None
|
|
|
|
# Thumbnails (small) always have ID 0; otherwise size 'x'
|
|
photo_size = 's' if media_id or access_hash else 'x'
|
|
return types.Photo(
|
|
id=media_id,
|
|
access_hash=access_hash,
|
|
file_reference=b'',
|
|
date=None,
|
|
sizes=[types.PhotoSize(
|
|
type=photo_size,
|
|
location=types.FileLocationToBeDeprecated(
|
|
volume_id=volume_id,
|
|
local_id=local_id
|
|
),
|
|
w=0,
|
|
h=0,
|
|
size=0
|
|
)],
|
|
dc_id=dc_id,
|
|
has_stickers=None
|
|
)
|
|
|
|
|
|
def pack_bot_file_id(file):
|
|
"""
|
|
Inverse operation for `resolve_bot_file_id`.
|
|
|
|
The only parameters this method will accept are :tl:`Document` and
|
|
:tl:`Photo`, and it will return a variable-length ``file_id`` string.
|
|
|
|
If an invalid parameter is given, it will ``return None``.
|
|
"""
|
|
if isinstance(file, types.MessageMediaDocument):
|
|
file = file.document
|
|
elif isinstance(file, types.MessageMediaPhoto):
|
|
file = file.photo
|
|
|
|
if isinstance(file, types.Document):
|
|
file_type = 5
|
|
for attribute in file.attributes:
|
|
if isinstance(attribute, types.DocumentAttributeAudio):
|
|
file_type = 3 if attribute.voice else 9
|
|
elif isinstance(attribute, types.DocumentAttributeVideo):
|
|
file_type = 13 if attribute.round_message else 4
|
|
elif isinstance(attribute, types.DocumentAttributeSticker):
|
|
file_type = 8
|
|
elif isinstance(attribute, types.DocumentAttributeAnimated):
|
|
file_type = 10
|
|
else:
|
|
continue
|
|
break
|
|
|
|
return _encode_telegram_base64(_rle_encode(struct.pack(
|
|
'<iiqqb', file_type, file.dc_id, file.id, file.access_hash, 2)))
|
|
|
|
elif isinstance(file, types.Photo):
|
|
size = next((x for x in reversed(file.sizes) if isinstance(
|
|
x, (types.PhotoSize, types.PhotoCachedSize))), None)
|
|
|
|
if not size:
|
|
return None
|
|
|
|
size = size.location
|
|
return _encode_telegram_base64(_rle_encode(struct.pack(
|
|
'<iiqqqqib', 2, file.dc_id, file.id, file.access_hash,
|
|
size.volume_id, 0, size.local_id, 2 # 0 = old `secret`
|
|
)))
|
|
else:
|
|
return None
|
|
|
|
|
|
def resolve_invite_link(link):
|
|
"""
|
|
Resolves the given invite link. Returns a tuple of
|
|
``(link creator user id, global chat id, random int)``.
|
|
|
|
Note that for broadcast channels, the link creator
|
|
user ID will be zero to protect their identity.
|
|
Normal chats and megagroup channels will have such ID.
|
|
|
|
Note that the chat ID may not be accurate for chats
|
|
with a link that were upgraded to megagroup, since
|
|
the link can remain the same, but the chat ID will
|
|
be correct once a new link is generated.
|
|
"""
|
|
link_hash, is_link = parse_username(link)
|
|
if not is_link:
|
|
# Perhaps the user passed the link hash directly
|
|
link_hash = link
|
|
|
|
# Little known fact, but invite links with a
|
|
# hex-string of bytes instead of base64 also works.
|
|
if re.match(r'[a-fA-F\d]{32}', link_hash):
|
|
payload = bytes.fromhex(link_hash)
|
|
else:
|
|
payload = _decode_telegram_base64(link_hash)
|
|
|
|
try:
|
|
return struct.unpack('>LLQ', payload)
|
|
except (struct.error, TypeError):
|
|
return None, None, None
|
|
|
|
|
|
def resolve_inline_message_id(inline_msg_id):
|
|
"""
|
|
Resolves an inline message ID. Returns a tuple of
|
|
``(message id, peer, dc id, access hash)``
|
|
|
|
The ``peer`` may either be a :tl:`PeerUser` referencing
|
|
the user who sent the message via the bot in a private
|
|
conversation or small group chat, or a :tl:`PeerChannel`
|
|
if the message was sent in a channel.
|
|
|
|
The ``access_hash`` does not have any use yet.
|
|
"""
|
|
try:
|
|
dc_id, message_id, pid, access_hash = \
|
|
struct.unpack('<iiiq', _decode_telegram_base64(inline_msg_id))
|
|
peer = types.PeerChannel(-pid) if pid < 0 else types.PeerUser(pid)
|
|
return message_id, peer, dc_id, access_hash
|
|
except (struct.error, TypeError):
|
|
return None, None, None, None
|
|
|
|
|
|
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 <= 2097152000: # 2000MB
|
|
return 512
|
|
|
|
raise ValueError('File size too large')
|
|
|
|
|
|
def encode_waveform(waveform):
|
|
"""
|
|
Encodes the input `bytes` into a 5-bit byte-string
|
|
to be used as a voice note's waveform. See `decode_waveform`
|
|
for the reverse operation.
|
|
|
|
Example
|
|
.. code-block:: python
|
|
|
|
chat = ...
|
|
file = 'my.ogg'
|
|
|
|
# Send 'my.ogg' with a ascending-triangle waveform
|
|
await client.send_file(chat, file, attributes=[types.DocumentAttributeAudio(
|
|
duration=7,
|
|
voice=True,
|
|
waveform=utils.encode_waveform(bytes(range(2 ** 5)) # 2**5 because 5-bit
|
|
)]
|
|
|
|
# Send 'my.ogg' with a square waveform
|
|
await client.send_file(chat, file, attributes=[types.DocumentAttributeAudio(
|
|
duration=7,
|
|
voice=True,
|
|
waveform=utils.encode_waveform(bytes((31, 31, 15, 15, 15, 15, 31, 31)) * 4)
|
|
)]
|
|
"""
|
|
bits_count = len(waveform) * 5
|
|
bytes_count = (bits_count + 7) // 8
|
|
result = bytearray(bytes_count + 1)
|
|
|
|
for i in range(len(waveform)):
|
|
byte_index, bit_shift = divmod(i * 5, 8)
|
|
value = (waveform[i] & 0b00011111) << bit_shift
|
|
|
|
or_what = struct.unpack('<H', (result[byte_index:byte_index + 2]))[0]
|
|
or_what |= value
|
|
result[byte_index:byte_index + 2] = struct.pack('<H', or_what)
|
|
|
|
return bytes(result[:bytes_count])
|
|
|
|
|
|
def decode_waveform(waveform):
|
|
"""
|
|
Inverse operation of `encode_waveform`.
|
|
"""
|
|
bit_count = len(waveform) * 8
|
|
value_count = bit_count // 5
|
|
if value_count == 0:
|
|
return b''
|
|
|
|
result = bytearray(value_count)
|
|
for i in range(value_count - 1):
|
|
byte_index, bit_shift = divmod(i * 5, 8)
|
|
value = struct.unpack('<H', waveform[byte_index:byte_index + 2])[0]
|
|
result[i] = (value >> bit_shift) & 0b00011111
|
|
|
|
byte_index, bit_shift = divmod(value_count - 1, 8)
|
|
if byte_index == len(waveform) - 1:
|
|
value = waveform[byte_index]
|
|
else:
|
|
value = struct.unpack('<H', waveform[byte_index:byte_index + 2])[0]
|
|
|
|
result[value_count - 1] = (value >> bit_shift) & 0b00011111
|
|
return bytes(result)
|
|
|
|
|
|
class AsyncClassWrapper:
|
|
def __init__(self, wrapped):
|
|
self.wrapped = wrapped
|
|
|
|
def __getattr__(self, item):
|
|
w = getattr(self.wrapped, item)
|
|
async def wrapper(*args, **kwargs):
|
|
val = w(*args, **kwargs)
|
|
return await val if inspect.isawaitable(val) else val
|
|
|
|
if callable(w):
|
|
return wrapper
|
|
else:
|
|
return w
|
|
|
|
|
|
def stripped_photo_to_jpg(stripped):
|
|
"""
|
|
Adds the JPG header and footer to a stripped image.
|
|
|
|
Ported from https://github.com/telegramdesktop/tdesktop/blob/bec39d89e19670eb436dc794a8f20b657cb87c71/Telegram/SourceFiles/ui/image/image.cpp#L225
|
|
"""
|
|
# NOTE: Changes here should update _photo_size_byte_count
|
|
if len(stripped) < 3 or stripped[0] != 1:
|
|
return stripped
|
|
|
|
header = bytearray(b'\xff\xd8\xff\xe0\x00\x10JFIF\x00\x01\x01\x00\x00\x01\x00\x01\x00\x00\xff\xdb\x00C\x00(\x1c\x1e#\x1e\x19(#!#-+(0<dA<77<{X]Id\x91\x80\x99\x96\x8f\x80\x8c\x8a\xa0\xb4\xe6\xc3\xa0\xaa\xda\xad\x8a\x8c\xc8\xff\xcb\xda\xee\xf5\xff\xff\xff\x9b\xc1\xff\xff\xff\xfa\xff\xe6\xfd\xff\xf8\xff\xdb\x00C\x01+--<5<vAAv\xf8\xa5\x8c\xa5\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xff\xc0\x00\x11\x08\x00\x00\x00\x00\x03\x01"\x00\x02\x11\x01\x03\x11\x01\xff\xc4\x00\x1f\x00\x00\x01\x05\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\xff\xc4\x00\xb5\x10\x00\x02\x01\x03\x03\x02\x04\x03\x05\x05\x04\x04\x00\x00\x01}\x01\x02\x03\x00\x04\x11\x05\x12!1A\x06\x13Qa\x07"q\x142\x81\x91\xa1\x08#B\xb1\xc1\x15R\xd1\xf0$3br\x82\t\n\x16\x17\x18\x19\x1a%&\'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz\x83\x84\x85\x86\x87\x88\x89\x8a\x92\x93\x94\x95\x96\x97\x98\x99\x9a\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xff\xc4\x00\x1f\x01\x00\x03\x01\x01\x01\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\xff\xc4\x00\xb5\x11\x00\x02\x01\x02\x04\x04\x03\x04\x07\x05\x04\x04\x00\x01\x02w\x00\x01\x02\x03\x11\x04\x05!1\x06\x12AQ\x07aq\x13"2\x81\x08\x14B\x91\xa1\xb1\xc1\t#3R\xf0\x15br\xd1\n\x16$4\xe1%\xf1\x17\x18\x19\x1a&\'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x92\x93\x94\x95\x96\x97\x98\x99\x9a\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xff\xda\x00\x0c\x03\x01\x00\x02\x11\x03\x11\x00?\x00')
|
|
footer = b"\xff\xd9"
|
|
header[164] = stripped[1]
|
|
header[166] = stripped[2]
|
|
return bytes(header) + stripped[3:] + footer
|
|
|
|
|
|
def _photo_size_byte_count(size):
|
|
if isinstance(size, types.PhotoSize):
|
|
return size.size
|
|
elif isinstance(size, types.PhotoStrippedSize):
|
|
if len(size.bytes) < 3 or size.bytes[0] != 1:
|
|
return len(size.bytes)
|
|
|
|
return len(size.bytes) + 622
|
|
elif isinstance(size, types.PhotoCachedSize):
|
|
return len(size.bytes)
|
|
elif isinstance(size, types.PhotoSizeEmpty):
|
|
return 0
|
|
else:
|
|
return None
|