mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-26 19:33:45 +03:00
468 lines
17 KiB
Python
468 lines
17 KiB
Python
import hashlib
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import io
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import itertools
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import os
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import pathlib
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import re
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import typing
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from io import BytesIO
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from ..crypto import AES
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from .. import utils, helpers, hints, _tl
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try:
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import PIL
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import PIL.Image
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except ImportError:
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PIL = None
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if typing.TYPE_CHECKING:
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from .telegramclient import TelegramClient
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class _CacheType:
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"""Like functools.partial but pretends to be the wrapped class."""
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def __init__(self, cls):
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self._cls = cls
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def __call__(self, *args, **kwargs):
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return self._cls(*args, file_reference=b'', **kwargs)
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def __eq__(self, other):
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return self._cls == other
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def _resize_photo_if_needed(
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file, is_image, width=1280, height=1280, background=(255, 255, 255)):
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# https://github.com/telegramdesktop/tdesktop/blob/12905f0dcb9d513378e7db11989455a1b764ef75/Telegram/SourceFiles/boxes/photo_crop_box.cpp#L254
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if (not is_image
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or PIL is None
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or (isinstance(file, io.IOBase) and not file.seekable())):
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return file
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if isinstance(file, bytes):
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file = io.BytesIO(file)
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before = file.tell() if isinstance(file, io.IOBase) else None
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try:
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# Don't use a `with` block for `image`, or `file` would be closed.
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# See https://github.com/LonamiWebs/Telethon/issues/1121 for more.
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image = PIL.Image.open(file)
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try:
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kwargs = {'exif': image.info['exif']}
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except KeyError:
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kwargs = {}
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if image.width <= width and image.height <= height:
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return file
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image.thumbnail((width, height), PIL.Image.ANTIALIAS)
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alpha_index = image.mode.find('A')
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if alpha_index == -1:
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# If the image mode doesn't have alpha
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# channel then don't bother masking it away.
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result = image
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else:
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# We could save the resized image with the original format, but
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# JPEG often compresses better -> smaller size -> faster upload
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# We need to mask away the alpha channel ([3]), since otherwise
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# IOError is raised when trying to save alpha channels in JPEG.
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result = PIL.Image.new('RGB', image.size, background)
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result.paste(image, mask=image.split()[alpha_index])
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buffer = io.BytesIO()
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result.save(buffer, 'JPEG', **kwargs)
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buffer.seek(0)
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return buffer
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except IOError:
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return file
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finally:
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if before is not None:
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file.seek(before, io.SEEK_SET)
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async def send_file(
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self: 'TelegramClient',
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entity: 'hints.EntityLike',
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file: 'typing.Union[hints.FileLike, typing.Sequence[hints.FileLike]]',
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*,
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caption: typing.Union[str, typing.Sequence[str]] = None,
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force_document: bool = False,
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file_size: int = None,
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clear_draft: bool = False,
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progress_callback: 'hints.ProgressCallback' = None,
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reply_to: 'hints.MessageIDLike' = None,
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attributes: 'typing.Sequence[_tl.TypeDocumentAttribute]' = None,
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thumb: 'hints.FileLike' = None,
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allow_cache: bool = True,
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parse_mode: str = (),
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formatting_entities: typing.Optional[typing.List[_tl.TypeMessageEntity]] = None,
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voice_note: bool = False,
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video_note: bool = False,
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buttons: 'hints.MarkupLike' = None,
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silent: bool = None,
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background: bool = None,
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supports_streaming: bool = False,
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schedule: 'hints.DateLike' = None,
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comment_to: 'typing.Union[int, _tl.Message]' = None,
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ttl: int = None,
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**kwargs) -> '_tl.Message':
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# TODO Properly implement allow_cache to reuse the sha256 of the file
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# i.e. `None` was used
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if not file:
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raise TypeError('Cannot use {!r} as file'.format(file))
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if not caption:
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caption = ''
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entity = await self.get_input_entity(entity)
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if comment_to is not None:
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entity, reply_to = await self._get_comment_data(entity, comment_to)
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else:
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reply_to = utils.get_message_id(reply_to)
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# First check if the user passed an iterable, in which case
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# we may want to send grouped.
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if utils.is_list_like(file):
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if utils.is_list_like(caption):
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captions = caption
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else:
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captions = [caption]
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result = []
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while file:
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result += await self._send_album(
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entity, file[:10], caption=captions[:10],
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progress_callback=progress_callback, reply_to=reply_to,
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parse_mode=parse_mode, silent=silent, schedule=schedule,
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supports_streaming=supports_streaming, clear_draft=clear_draft,
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force_document=force_document, background=background,
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)
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file = file[10:]
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captions = captions[10:]
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for doc, cap in zip(file, captions):
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result.append(await self.send_file(
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entity, doc, allow_cache=allow_cache,
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caption=cap, force_document=force_document,
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progress_callback=progress_callback, reply_to=reply_to,
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attributes=attributes, thumb=thumb, voice_note=voice_note,
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video_note=video_note, buttons=buttons, silent=silent,
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supports_streaming=supports_streaming, schedule=schedule,
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clear_draft=clear_draft, background=background,
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**kwargs
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))
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return result
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if formatting_entities is not None:
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msg_entities = formatting_entities
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else:
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caption, msg_entities =\
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await self._parse_message_text(caption, parse_mode)
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file_handle, media, image = await self._file_to_media(
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file, force_document=force_document,
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file_size=file_size,
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progress_callback=progress_callback,
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attributes=attributes, allow_cache=allow_cache, thumb=thumb,
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voice_note=voice_note, video_note=video_note,
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supports_streaming=supports_streaming, ttl=ttl
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)
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# e.g. invalid cast from :tl:`MessageMediaWebPage`
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if not media:
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raise TypeError('Cannot use {!r} as file'.format(file))
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markup = self.build_reply_markup(buttons)
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request = _tl.fn.messages.SendMedia(
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entity, media, reply_to_msg_id=reply_to, message=caption,
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entities=msg_entities, reply_markup=markup, silent=silent,
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schedule_date=schedule, clear_draft=clear_draft,
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background=background
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)
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return self._get_response_message(request, await self(request), entity)
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async def _send_album(self: 'TelegramClient', entity, files, caption='',
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progress_callback=None, reply_to=None,
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parse_mode=(), silent=None, schedule=None,
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supports_streaming=None, clear_draft=None,
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force_document=False, background=None, ttl=None):
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"""Specialized version of .send_file for albums"""
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# We don't care if the user wants to avoid cache, we will use it
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# anyway. Why? The cached version will be exactly the same thing
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# we need to produce right now to send albums (uploadMedia), and
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# cache only makes a difference for documents where the user may
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# want the attributes used on them to change.
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#
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# In theory documents can be sent inside the albums but they appear
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# as different messages (not inside the album), and the logic to set
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# the attributes/avoid cache is already written in .send_file().
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entity = await self.get_input_entity(entity)
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if not utils.is_list_like(caption):
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caption = (caption,)
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captions = []
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for c in reversed(caption): # Pop from the end (so reverse)
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captions.append(await self._parse_message_text(c or '', parse_mode))
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reply_to = utils.get_message_id(reply_to)
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# Need to upload the media first, but only if they're not cached yet
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media = []
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for file in files:
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# Albums want :tl:`InputMedia` which, in theory, includes
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# :tl:`InputMediaUploadedPhoto`. However using that will
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# make it `raise MediaInvalidError`, so we need to upload
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# it as media and then convert that to :tl:`InputMediaPhoto`.
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fh, fm, _ = await self._file_to_media(
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file, supports_streaming=supports_streaming,
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force_document=force_document, ttl=ttl)
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if isinstance(fm, (_tl.InputMediaUploadedPhoto, _tl.InputMediaPhotoExternal)):
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r = await self(_tl.fn.messages.UploadMedia(
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entity, media=fm
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))
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fm = utils.get_input_media(r.photo)
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elif isinstance(fm, _tl.InputMediaUploadedDocument):
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r = await self(_tl.fn.messages.UploadMedia(
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entity, media=fm
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))
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fm = utils.get_input_media(
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r.document, supports_streaming=supports_streaming)
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if captions:
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caption, msg_entities = captions.pop()
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else:
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caption, msg_entities = '', None
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media.append(_tl.InputSingleMedia(
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fm,
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message=caption,
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entities=msg_entities
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# random_id is autogenerated
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))
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# Now we can construct the multi-media request
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request = _tl.fn.messages.SendMultiMedia(
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entity, reply_to_msg_id=reply_to, multi_media=media,
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silent=silent, schedule_date=schedule, clear_draft=clear_draft,
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background=background
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)
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result = await self(request)
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random_ids = [m.random_id for m in media]
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return self._get_response_message(random_ids, result, entity)
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async def upload_file(
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self: 'TelegramClient',
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file: 'hints.FileLike',
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*,
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part_size_kb: float = None,
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file_size: int = None,
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file_name: str = None,
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use_cache: type = None,
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key: bytes = None,
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iv: bytes = None,
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progress_callback: 'hints.ProgressCallback' = None) -> '_tl.TypeInputFile':
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if isinstance(file, (_tl.InputFile, _tl.InputFileBig)):
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return file # Already uploaded
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pos = 0
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async with helpers._FileStream(file, file_size=file_size) as stream:
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# Opening the stream will determine the correct file size
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file_size = stream.file_size
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if not part_size_kb:
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part_size_kb = utils.get_appropriated_part_size(file_size)
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if part_size_kb > 512:
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raise ValueError('The part size must be less or equal to 512KB')
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part_size = int(part_size_kb * 1024)
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if part_size % 1024 != 0:
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raise ValueError(
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'The part size must be evenly divisible by 1024')
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# Set a default file name if None was specified
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file_id = helpers.generate_random_long()
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if not file_name:
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file_name = stream.name or str(file_id)
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# If the file name lacks extension, add it if possible.
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# Else Telegram complains with `PHOTO_EXT_INVALID_ERROR`
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# even if the uploaded image is indeed a photo.
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if not os.path.splitext(file_name)[-1]:
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file_name += utils._get_extension(stream)
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# Determine whether the file is too big (over 10MB) or not
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# Telegram does make a distinction between smaller or larger files
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is_big = file_size > 10 * 1024 * 1024
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hash_md5 = hashlib.md5()
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part_count = (file_size + part_size - 1) // part_size
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self._log[__name__].info('Uploading file of %d bytes in %d chunks of %d',
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file_size, part_count, part_size)
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pos = 0
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for part_index in range(part_count):
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# Read the file by in chunks of size part_size
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part = await helpers._maybe_await(stream.read(part_size))
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if not isinstance(part, bytes):
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raise TypeError(
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'file descriptor returned {}, not bytes (you must '
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'open the file in bytes mode)'.format(type(part)))
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# `file_size` could be wrong in which case `part` may not be
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# `part_size` before reaching the end.
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if len(part) != part_size and part_index < part_count - 1:
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raise ValueError(
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'read less than {} before reaching the end; either '
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'`file_size` or `read` are wrong'.format(part_size))
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pos += len(part)
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# Encryption part if needed
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if key and iv:
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part = AES.encrypt_ige(part, key, iv)
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if not is_big:
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# Bit odd that MD5 is only needed for small files and not
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# big ones with more chance for corruption, but that's
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# what Telegram wants.
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hash_md5.update(part)
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# The SavePartRequest is different depending on whether
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# the file is too large or not (over or less than 10MB)
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if is_big:
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request = _tl.fn.upload.SaveBigFilePart(
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file_id, part_index, part_count, part)
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else:
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request = _tl.fn.upload.SaveFilePart(
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file_id, part_index, part)
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result = await self(request)
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if result:
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self._log[__name__].debug('Uploaded %d/%d',
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part_index + 1, part_count)
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if progress_callback:
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await helpers._maybe_await(progress_callback(pos, file_size))
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else:
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raise RuntimeError(
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'Failed to upload file part {}.'.format(part_index))
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if is_big:
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return _tl.InputFileBig(file_id, part_count, file_name)
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else:
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return _tl.custom.InputSizedFile(
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file_id, part_count, file_name, md5=hash_md5, size=file_size
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)
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async def _file_to_media(
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self, file, force_document=False, file_size=None,
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progress_callback=None, attributes=None, thumb=None,
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allow_cache=True, voice_note=False, video_note=False,
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supports_streaming=False, mime_type=None, as_image=None,
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ttl=None):
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if not file:
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return None, None, None
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if isinstance(file, pathlib.Path):
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file = str(file.absolute())
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is_image = utils.is_image(file)
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if as_image is None:
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as_image = is_image and not force_document
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# `aiofiles` do not base `io.IOBase` but do have `read`, so we
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# just check for the read attribute to see if it's file-like.
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if not isinstance(file, (str, bytes, _tl.InputFile, _tl.InputFileBig))\
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and not hasattr(file, 'read'):
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# The user may pass a Message containing media (or the media,
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# or anything similar) that should be treated as a file. Try
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# getting the input media for whatever they passed and send it.
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#
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# We pass all attributes since these will be used if the user
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# passed :tl:`InputFile`, and all information may be relevant.
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try:
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return (None, utils.get_input_media(
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file,
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is_photo=as_image,
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attributes=attributes,
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force_document=force_document,
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voice_note=voice_note,
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video_note=video_note,
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supports_streaming=supports_streaming,
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ttl=ttl
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), as_image)
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except TypeError:
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# Can't turn whatever was given into media
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return None, None, as_image
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media = None
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file_handle = None
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if isinstance(file, (_tl.InputFile, _tl.InputFileBig)):
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file_handle = file
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elif not isinstance(file, str) or os.path.isfile(file):
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file_handle = await self.upload_file(
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_resize_photo_if_needed(file, as_image),
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file_size=file_size,
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progress_callback=progress_callback
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)
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elif re.match('https?://', file):
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if as_image:
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media = _tl.InputMediaPhotoExternal(file, ttl_seconds=ttl)
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else:
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media = _tl.InputMediaDocumentExternal(file, ttl_seconds=ttl)
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else:
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bot_file = utils.resolve_bot_file_id(file)
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if bot_file:
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media = utils.get_input_media(bot_file, ttl=ttl)
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if media:
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pass # Already have media, don't check the rest
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elif not file_handle:
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raise ValueError(
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'Failed to convert {} to media. Not an existing file, '
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'an HTTP URL or a valid bot-API-like file ID'.format(file)
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)
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elif as_image:
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media = _tl.InputMediaUploadedPhoto(file_handle, ttl_seconds=ttl)
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else:
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attributes, mime_type = utils.get_attributes(
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file,
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mime_type=mime_type,
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attributes=attributes,
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force_document=force_document and not is_image,
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voice_note=voice_note,
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video_note=video_note,
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supports_streaming=supports_streaming,
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thumb=thumb
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)
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if not thumb:
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thumb = None
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else:
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if isinstance(thumb, pathlib.Path):
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thumb = str(thumb.absolute())
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thumb = await self.upload_file(thumb, file_size=file_size)
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media = _tl.InputMediaUploadedDocument(
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file=file_handle,
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mime_type=mime_type,
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attributes=attributes,
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thumb=thumb,
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force_file=force_document and not is_image,
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ttl_seconds=ttl
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)
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return file_handle, media, as_image
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