261 lines
10 KiB
Python
261 lines
10 KiB
Python
# Pyrogram - Telegram MTProto API Client Library for Python
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# Copyright (C) 2017-2020 Dan <https://github.com/delivrance>
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#
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# This file is part of Pyrogram.
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#
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# Pyrogram is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Pyrogram is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.
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import binascii
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import io
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import os
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import re
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import struct
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import time
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from datetime import datetime
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from threading import Event
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from typing import Union
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import pyrogram
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from pyrogram.client.ext import BaseClient, FileData, utils
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from pyrogram.errors import FileIdInvalid
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DEFAULT_DOWNLOAD_DIR = "downloads/"
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class DownloadMedia(BaseClient):
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def download_media(
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self,
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message: Union["pyrogram.Message", str],
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file_ref: str = None,
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file_name: str = DEFAULT_DOWNLOAD_DIR,
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out: io.IOBase = None,
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block: bool = True,
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progress: callable = None,
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progress_args: tuple = ()
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) -> Union[str, None]:
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"""Download the media from a message.
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Parameters:
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message (:obj:`Message` | ``str``):
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Pass a Message containing the media, the media itself (message.audio, message.video, ...) or
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the file id as string.
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file_ref (``str``, *optional*):
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A valid file reference obtained by a recently fetched media message.
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To be used in combination with a file id in case a file reference is needed.
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file_name (``str``, *optional*):
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A custom *file_name* to be used instead of the one provided by Telegram.
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By default, all files are downloaded in the *downloads* folder in your working directory.
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You can also specify a path for downloading files in a custom location: paths that end with "/"
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are considered directories. All non-existent folders will be created automatically.
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out (``io.IOBase``, *optional*):
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A custom *file-like object* to be used when downloading file. Overrides file_name
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block (``bool``, *optional*):
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Blocks the code execution until the file has been downloaded.
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Defaults to True.
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progress (``callable``, *optional*):
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Pass a callback function to view the file transmission progress.
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The function must take *(current, total)* as positional arguments (look at Other Parameters below for a
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detailed description) and will be called back each time a new file chunk has been successfully
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transmitted.
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progress_args (``tuple``, *optional*):
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Extra custom arguments for the progress callback function.
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You can pass anything you need to be available in the progress callback scope; for example, a Message
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object or a Client instance in order to edit the message with the updated progress status.
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Other Parameters:
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current (``int``):
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The amount of bytes transmitted so far.
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total (``int``):
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The total size of the file.
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*args (``tuple``, *optional*):
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Extra custom arguments as defined in the *progress_args* parameter.
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You can either keep *\*args* or add every single extra argument in your function signature.
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Returns:
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``str`` | ``None``: On success, the absolute path of the downloaded file is returned, otherwise, in case
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the download failed or was deliberately stopped with :meth:`~Client.stop_transmission`, None is returned.
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Raises:
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ValueError: if the message doesn't contain any downloadable media
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Example:
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.. code-block:: python
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# Download from Message
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app.download_media(message)
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# Download from file id
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app.download_media("CAADBAADyg4AAvLQYAEYD4F7vcZ43AI")
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# Keep track of the progress while downloading
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def progress(current, total):
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print("{:.1f}%".format(current * 100 / total))
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app.download_media(message, progress=progress)
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"""
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error_message = "This message doesn't contain any downloadable media"
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available_media = ("audio", "document", "photo", "sticker", "animation", "video", "voice", "video_note")
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media_file_name = None
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file_size = None
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mime_type = None
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date = None
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if isinstance(message, pyrogram.Message):
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for kind in available_media:
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media = getattr(message, kind, None)
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if media is not None:
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break
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else:
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raise ValueError(error_message)
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else:
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media = message
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if isinstance(media, str):
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file_id_str = media
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else:
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file_id_str = media.file_id
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media_file_name = getattr(media, "file_name", "")
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file_size = getattr(media, "file_size", None)
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mime_type = getattr(media, "mime_type", None)
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date = getattr(media, "date", None)
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file_ref = getattr(media, "file_ref", None)
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data = FileData(
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file_name=media_file_name,
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file_size=file_size,
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mime_type=mime_type,
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date=date,
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file_ref=file_ref
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)
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def get_existing_attributes() -> dict:
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return dict(filter(lambda x: x[1] is not None, data.__dict__.items()))
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try:
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decoded = utils.decode_file_id(file_id_str)
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media_type = decoded[0]
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if media_type == 1:
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unpacked = struct.unpack("<iiqqqiiiqi", decoded)
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dc_id, photo_id, _, volume_id, size_type, peer_id, x, peer_access_hash, local_id = unpacked[1:]
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if x == 0:
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peer_type = "user"
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elif x == -1:
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peer_id = -peer_id
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peer_type = "chat"
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else:
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peer_id = utils.get_channel_id(peer_id - 1000727379968)
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peer_type = "channel"
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data = FileData(
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**get_existing_attributes(),
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media_type=media_type,
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dc_id=dc_id,
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peer_id=peer_id,
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peer_type=peer_type,
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peer_access_hash=peer_access_hash,
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volume_id=volume_id,
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local_id=local_id,
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is_big=size_type == 3
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)
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elif media_type in (0, 2, 14):
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unpacked = struct.unpack("<iiqqqiiii", decoded)
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dc_id, document_id, access_hash, volume_id, _, _, thumb_size, local_id = unpacked[1:]
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data = FileData(
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**get_existing_attributes(),
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media_type=media_type,
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dc_id=dc_id,
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document_id=document_id,
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access_hash=access_hash,
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thumb_size=chr(thumb_size)
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)
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elif media_type in (3, 4, 5, 8, 9, 10, 13):
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unpacked = struct.unpack("<iiqq", decoded)
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dc_id, document_id, access_hash = unpacked[1:]
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data = FileData(
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**get_existing_attributes(),
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media_type=media_type,
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dc_id=dc_id,
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document_id=document_id,
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access_hash=access_hash
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)
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else:
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raise ValueError("Unknown media type: {}".format(file_id_str))
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except (AssertionError, binascii.Error, struct.error):
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raise FileIdInvalid from None
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done = Event()
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path = [None]
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directory, file_name = os.path.split(file_name)
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file_name = file_name or data.file_name or ""
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if not os.path.isabs(file_name):
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directory = self.PARENT_DIR / (directory or DEFAULT_DOWNLOAD_DIR)
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media_type_str = self.MEDIA_TYPE_ID[data.media_type]
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if not file_name:
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guessed_extension = self.guess_extension(data.mime_type)
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if data.media_type in (0, 1, 2, 14):
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extension = ".jpg"
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elif data.media_type == 3:
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extension = guessed_extension or ".ogg"
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elif data.media_type in (4, 10, 13):
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extension = guessed_extension or ".mp4"
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elif data.media_type == 5:
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extension = guessed_extension or ".zip"
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elif data.media_type == 8:
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extension = guessed_extension or ".webp"
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elif data.media_type == 9:
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extension = guessed_extension or ".mp3"
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else:
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extension = ".unknown"
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file_name = "{}_{}_{}{}".format(
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media_type_str,
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datetime.fromtimestamp(data.date or time.time()).strftime("%Y-%m-%d_%H-%M-%S"),
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self.rnd_id(),
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extension
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)
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if not out:
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out = open(os.path.abspath(re.sub("\\\\", "/", os.path.join(directory, file_name))), 'wb')
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os.makedirs(directory, exist_ok=True)
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to_file = True
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else:
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to_file = False
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self.download_queue.put((data, done, progress, progress_args, out, path, to_file))
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# Cast to string because Path objects aren't supported by Python 3.5
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self.download_queue.put((data, str(directory), str(file_name), done, progress, progress_args, path))
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if block:
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done.wait()
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return path[0]
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