mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-10 19:46:36 +03:00
parent
75fbd28d3e
commit
c864ef7e16
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@ -26,7 +26,7 @@ MAX_CHUNK_SIZE = 512 * 1024
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class _DirectDownloadIter(RequestIter):
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async def _init(
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self, file, dc_id, offset, stride, chunk_size, request_size, file_size
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self, file, dc_id, offset, stride, chunk_size, request_size, file_size, msg_data
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):
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self.request = functions.upload.GetFileRequest(
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file, offset=offset, limit=request_size)
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@ -35,6 +35,7 @@ class _DirectDownloadIter(RequestIter):
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self._stride = stride
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self._chunk_size = chunk_size
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self._last_part = None
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self._msg_data = msg_data
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self._exported = dc_id and self.client.session.dc_id != dc_id
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if not self._exported:
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@ -80,6 +81,29 @@ class _DirectDownloadIter(RequestIter):
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self._exported = True
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return await self._request()
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except errors.FilerefUpgradeNeededError as e:
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# Only implemented for documents which are the ones that may take that long to download
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if not self._msg_data \
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or not isinstance(self.request.location, types.InputDocumentFileLocation) \
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or self.request.location.thumb_size != '':
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raise
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self.client._log[__name__].info('File ref expired during download; refetching message')
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chat, msg_id = self._msg_data
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msg = await self.client.get_messages(chat, ids=msg_id)
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if not isinstance(msg.media, types.MessageMediaDocument):
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raise
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document = msg.media.document
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# Message media may have been edited for something else
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if document.id != self.request.location.id:
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raise
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self.request.location.file_reference = document.file_reference
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return await self._request()
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async def close(self):
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if not self._sender:
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return
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@ -344,10 +368,16 @@ class DownloadMethods:
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await client.download_media(message, progress_callback=callback)
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"""
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# Downloading large documents may be slow enough to require a new file reference
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# to be obtained mid-download. Store (input chat, message id) so that the message
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# can be re-fetched.
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msg_data = None
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# TODO This won't work for messageService
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if isinstance(message, types.Message):
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date = message.date
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media = message.media
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msg_data = (message.input_chat, message.id) if message.input_chat else None
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else:
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date = datetime.datetime.now()
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media = message
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@ -365,7 +395,7 @@ class DownloadMethods:
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)
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elif isinstance(media, (types.MessageMediaDocument, types.Document)):
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return await self._download_document(
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media, file, date, thumb, progress_callback
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media, file, date, thumb, progress_callback, msg_data
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)
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elif isinstance(media, types.MessageMediaContact) and thumb is None:
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return self._download_contact(
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@ -439,6 +469,29 @@ class DownloadMethods:
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data = await client.download_file(input_file, bytes)
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print(data[:16])
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"""
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return await self._download_file(
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input_location,
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file,
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part_size_kb=part_size_kb,
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file_size=file_size,
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progress_callback=progress_callback,
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dc_id=dc_id,
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key=key,
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iv=iv,
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)
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async def _download_file(
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self: 'TelegramClient',
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input_location: 'hints.FileLike',
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file: 'hints.OutFileLike' = None,
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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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progress_callback: 'hints.ProgressCallback' = None,
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dc_id: int = None,
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key: bytes = None,
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iv: bytes = None,
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msg_data: tuple = None) -> typing.Optional[bytes]:
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if not part_size_kb:
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if not file_size:
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part_size_kb = 64 # Reasonable default
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@ -464,8 +517,8 @@ class DownloadMethods:
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f = file
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try:
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async for chunk in self.iter_download(
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input_location, request_size=part_size, dc_id=dc_id):
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async for chunk in self._iter_download(
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input_location, request_size=part_size, dc_id=dc_id, msg_data=msg_data):
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if iv and key:
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chunk = AES.decrypt_ige(chunk, key, iv)
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r = f.write(chunk)
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@ -582,6 +635,30 @@ class DownloadMethods:
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await stream.close()
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assert len(header) == 32
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"""
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return self._iter_download(
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file,
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offset=offset,
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stride=stride,
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limit=limit,
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chunk_size=chunk_size,
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request_size=request_size,
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file_size=file_size,
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dc_id=dc_id,
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)
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def _iter_download(
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self: 'TelegramClient',
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file: 'hints.FileLike',
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*,
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offset: int = 0,
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stride: int = None,
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limit: int = None,
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chunk_size: int = None,
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request_size: int = MAX_CHUNK_SIZE,
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file_size: int = None,
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dc_id: int = None,
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msg_data: tuple = None
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):
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info = utils._get_file_info(file)
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if info.dc_id is not None:
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dc_id = info.dc_id
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@ -628,7 +705,8 @@ class DownloadMethods:
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stride=stride,
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chunk_size=chunk_size,
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request_size=request_size,
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file_size=file_size
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file_size=file_size,
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msg_data=msg_data,
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)
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# endregion
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@ -748,7 +826,7 @@ class DownloadMethods:
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return kind, possible_names
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async def _download_document(
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self, document, file, date, thumb, progress_callback):
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self, document, file, date, thumb, progress_callback, msg_data):
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"""Specialized version of .download_media() for documents."""
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if isinstance(document, types.MessageMediaDocument):
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document = document.document
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@ -768,7 +846,7 @@ class DownloadMethods:
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if isinstance(size, (types.PhotoCachedSize, types.PhotoStrippedSize)):
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return self._download_cached_photo_size(size, file)
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result = await self.download_file(
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result = await self._download_file(
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types.InputDocumentFileLocation(
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id=document.id,
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access_hash=document.access_hash,
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@ -777,7 +855,8 @@ class DownloadMethods:
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),
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file,
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file_size=size.size if size else document.size,
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progress_callback=progress_callback
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progress_callback=progress_callback,
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msg_data=msg_data,
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)
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return result if file is bytes else file
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@ -761,6 +761,8 @@ class Message(ChatGetter, SenderGetter, TLObject, abc.ABC):
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with the ``message`` already set.
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"""
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if self._client:
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# Passing the entire message is important, in case it has to be
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# refetched for a fresh file reference.
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return await self._client.download_media(self, *args, **kwargs)
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async def click(self, i=None, j=None,
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