mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-22 17:36:34 +03:00
590 lines
22 KiB
Python
590 lines
22 KiB
Python
import datetime
|
|
import io
|
|
import os
|
|
import pathlib
|
|
|
|
from .users import UserMethods
|
|
from .. import utils, helpers, errors
|
|
from ..tl import TLObject, types, functions
|
|
|
|
try:
|
|
import aiohttp
|
|
except ImportError:
|
|
aiohttp = None
|
|
|
|
|
|
class DownloadMethods(UserMethods):
|
|
|
|
# region Public methods
|
|
|
|
async def download_profile_photo(
|
|
self, entity, file=None, *, download_big=True):
|
|
"""
|
|
Downloads the profile photo of the given entity (user/chat/channel).
|
|
|
|
Args:
|
|
entity (`entity`):
|
|
From who the photo will be downloaded.
|
|
|
|
.. note::
|
|
|
|
This method expects the full entity (which has the data
|
|
to download the photo), not an input variant.
|
|
|
|
It's possible that sometimes you can't fetch the entity
|
|
from its input (since you can get errors like
|
|
``ChannelPrivateError``) but you already have it through
|
|
another call, like getting a forwarded message from it.
|
|
|
|
file (`str` | `file`, optional):
|
|
The output file path, directory, or stream-like object.
|
|
If the path exists and is a file, it will be overwritten.
|
|
If file is the type `bytes`, it will be downloaded in-memory
|
|
as a bytestring (e.g. ``file=bytes``).
|
|
|
|
download_big (`bool`, optional):
|
|
Whether to use the big version of the available photos.
|
|
|
|
Returns:
|
|
``None`` if no photo was provided, or if it was Empty. On success
|
|
the file path is returned since it may differ from the one given.
|
|
"""
|
|
# hex(crc32(x.encode('ascii'))) for x in
|
|
# ('User', 'Chat', 'UserFull', 'ChatFull')
|
|
ENTITIES = (0x2da17977, 0xc5af5d94, 0x1f4661b9, 0xd49a2697)
|
|
# ('InputPeer', 'InputUser', 'InputChannel')
|
|
INPUTS = (0xc91c90b6, 0xe669bf46, 0x40f202fd)
|
|
if not isinstance(entity, TLObject) or entity.SUBCLASS_OF_ID in INPUTS:
|
|
entity = await self.get_entity(entity)
|
|
|
|
possible_names = []
|
|
if entity.SUBCLASS_OF_ID not in ENTITIES:
|
|
photo = entity
|
|
else:
|
|
if not hasattr(entity, 'photo'):
|
|
# Special case: may be a ChatFull with photo:Photo
|
|
# This is different from a normal UserProfilePhoto and Chat
|
|
if not hasattr(entity, 'chat_photo'):
|
|
return None
|
|
|
|
return await self._download_photo(
|
|
entity.chat_photo, file, date=None, progress_callback=None)
|
|
|
|
for attr in ('username', 'first_name', 'title'):
|
|
possible_names.append(getattr(entity, attr, None))
|
|
|
|
photo = entity.photo
|
|
|
|
if isinstance(photo, (types.UserProfilePhoto, types.ChatPhoto)):
|
|
dc_id = photo.dc_id
|
|
which = photo.photo_big if download_big else photo.photo_small
|
|
loc = types.InputPeerPhotoFileLocation(
|
|
peer=await self.get_input_entity(entity),
|
|
local_id=which.local_id,
|
|
volume_id=which.volume_id,
|
|
big=download_big
|
|
)
|
|
else:
|
|
# It doesn't make any sense to check if `photo` can be used
|
|
# as input location, because then this method would be able
|
|
# to "download the profile photo of a message", i.e. its
|
|
# media which should be done with `download_media` instead.
|
|
return None
|
|
|
|
file = self._get_proper_filename(
|
|
file, 'profile_photo', '.jpg',
|
|
possible_names=possible_names
|
|
)
|
|
|
|
try:
|
|
result = await self.download_file(loc, file, dc_id=dc_id)
|
|
return result if file is bytes else file
|
|
except errors.LocationInvalidError:
|
|
# See issue #500, Android app fails as of v4.6.0 (1155).
|
|
# The fix seems to be using the full channel chat photo.
|
|
ie = await self.get_input_entity(entity)
|
|
if isinstance(ie, types.InputPeerChannel):
|
|
full = await self(functions.channels.GetFullChannelRequest(ie))
|
|
return await self._download_photo(
|
|
full.full_chat.chat_photo, file,
|
|
date=None, progress_callback=None,
|
|
thumb=-1 if download_big else 0
|
|
)
|
|
else:
|
|
# Until there's a report for chats, no need to.
|
|
return None
|
|
|
|
async def download_media(self, message, file=None,
|
|
*, thumb=None, progress_callback=None):
|
|
"""
|
|
Downloads the given media, or the media from a specified Message.
|
|
|
|
Note that if the download is too slow, you should consider installing
|
|
``cryptg`` (through ``pip install cryptg``) so that decrypting the
|
|
received data is done in C instead of Python (much faster).
|
|
|
|
message (`Message <telethon.tl.custom.message.Message>` | :tl:`Media`):
|
|
The media or message containing the media that will be downloaded.
|
|
|
|
file (`str` | `file`, optional):
|
|
The output file path, directory, or stream-like object.
|
|
If the path exists and is a file, it will be overwritten.
|
|
If file is the type `bytes`, it will be downloaded in-memory
|
|
as a bytestring (e.g. ``file=bytes``).
|
|
|
|
progress_callback (`callable`, optional):
|
|
A callback function accepting two parameters:
|
|
``(received bytes, total)``.
|
|
|
|
thumb (`int` | :tl:`PhotoSize`, optional):
|
|
Which thumbnail size from the document or photo to download,
|
|
instead of downloading the document or photo itself.
|
|
|
|
If it's specified but the file does not have a thumbnail,
|
|
this method will return ``None``.
|
|
|
|
The parameter should be an integer index between ``0`` and
|
|
``len(sizes)``. ``0`` will download the smallest thumbnail,
|
|
and ``len(sizes) - 1`` will download the largest thumbnail.
|
|
You can also use negative indices.
|
|
|
|
You can also pass the :tl:`PhotoSize` instance to use.
|
|
|
|
In short, use ``thumb=0`` if you want the smallest thumbnail
|
|
and ``thumb=-1`` if you want the largest thumbnail.
|
|
|
|
Returns:
|
|
``None`` if no media was provided, or if it was Empty. On success
|
|
the file path is returned since it may differ from the one given.
|
|
"""
|
|
# TODO This won't work for messageService
|
|
if isinstance(message, types.Message):
|
|
date = message.date
|
|
media = message.media
|
|
else:
|
|
date = datetime.datetime.now()
|
|
media = message
|
|
|
|
if isinstance(media, str):
|
|
media = utils.resolve_bot_file_id(media)
|
|
|
|
if isinstance(media, types.MessageMediaWebPage):
|
|
if isinstance(media.webpage, types.WebPage):
|
|
media = media.webpage.document or media.webpage.photo
|
|
|
|
if isinstance(media, (types.MessageMediaPhoto, types.Photo)):
|
|
return await self._download_photo(
|
|
media, file, date, thumb, progress_callback
|
|
)
|
|
elif isinstance(media, (types.MessageMediaDocument, types.Document)):
|
|
return await self._download_document(
|
|
media, file, date, thumb, progress_callback
|
|
)
|
|
elif isinstance(media, types.MessageMediaContact) and thumb is None:
|
|
return self._download_contact(
|
|
media, file
|
|
)
|
|
elif isinstance(media, (types.WebDocument, types.WebDocumentNoProxy)) and thumb is None:
|
|
return await self._download_web_document(
|
|
media, file, progress_callback
|
|
)
|
|
|
|
async def download_file(
|
|
self, input_location, file=None, *, part_size_kb=None,
|
|
file_size=None, progress_callback=None, dc_id=None):
|
|
"""
|
|
Downloads the given input location to a file.
|
|
|
|
Args:
|
|
input_location (:tl:`InputFileLocation`):
|
|
The file location from which the file will be downloaded.
|
|
See `telethon.utils.get_input_location` source for a complete
|
|
list of supported types.
|
|
|
|
file (`str` | `file`, optional):
|
|
The output file path, directory, or stream-like object.
|
|
If the path exists and is a file, it will be overwritten.
|
|
|
|
If the file path is ``None`` or ``bytes``, then the result
|
|
will be saved in memory and returned as `bytes`.
|
|
|
|
part_size_kb (`int`, optional):
|
|
Chunk size when downloading files. The larger, the less
|
|
requests will be made (up to 512KB maximum).
|
|
|
|
file_size (`int`, optional):
|
|
The file size that is about to be downloaded, if known.
|
|
Only used if ``progress_callback`` is specified.
|
|
|
|
progress_callback (`callable`, optional):
|
|
A callback function accepting two parameters:
|
|
``(downloaded bytes, total)``. Note that the
|
|
``total`` is the provided ``file_size``.
|
|
|
|
dc_id (`int`, optional):
|
|
The data center the library should connect to in order
|
|
to download the file. You shouldn't worry about this.
|
|
"""
|
|
if not part_size_kb:
|
|
if not file_size:
|
|
part_size_kb = 64 # Reasonable default
|
|
else:
|
|
part_size_kb = utils.get_appropriated_part_size(file_size)
|
|
|
|
part_size = int(part_size_kb * 1024)
|
|
# https://core.telegram.org/api/files says:
|
|
# > part_size % 1024 = 0 (divisible by 1KB)
|
|
#
|
|
# But https://core.telegram.org/cdn (more recent) says:
|
|
# > limit must be divisible by 4096 bytes
|
|
# So we just stick to the 4096 limit.
|
|
if part_size % 4096 != 0:
|
|
raise ValueError(
|
|
'The part size must be evenly divisible by 4096.')
|
|
|
|
in_memory = file is None or file is bytes
|
|
if in_memory:
|
|
f = io.BytesIO()
|
|
elif isinstance(file, str):
|
|
# Ensure that we'll be able to download the media
|
|
helpers.ensure_parent_dir_exists(file)
|
|
f = open(file, 'wb')
|
|
else:
|
|
f = file
|
|
|
|
old_dc = dc_id
|
|
dc_id, input_location = utils.get_input_location(input_location)
|
|
if dc_id is None:
|
|
dc_id = old_dc
|
|
|
|
exported = dc_id and self.session.dc_id != dc_id
|
|
if exported:
|
|
try:
|
|
sender = await self._borrow_exported_sender(dc_id)
|
|
except errors.DcIdInvalidError:
|
|
# Can't export a sender for the ID we are currently in
|
|
config = await self(functions.help.GetConfigRequest())
|
|
for option in config.dc_options:
|
|
if option.ip_address == self.session.server_address:
|
|
self.session.set_dc(
|
|
option.id, option.ip_address, option.port)
|
|
self.session.save()
|
|
break
|
|
|
|
# TODO Figure out why the session may have the wrong DC ID
|
|
sender = self._sender
|
|
exported = False
|
|
else:
|
|
# The used sender will also change if ``FileMigrateError`` occurs
|
|
sender = self._sender
|
|
|
|
self._log[__name__].info('Downloading file in chunks of %d bytes',
|
|
part_size)
|
|
try:
|
|
offset = 0
|
|
while True:
|
|
try:
|
|
result = await sender.send(functions.upload.GetFileRequest(
|
|
input_location, offset, part_size
|
|
))
|
|
if isinstance(result, types.upload.FileCdnRedirect):
|
|
# TODO Implement
|
|
raise NotImplementedError
|
|
except errors.FileMigrateError as e:
|
|
self._log[__name__].info('File lives in another DC')
|
|
sender = await self._borrow_exported_sender(e.new_dc)
|
|
exported = True
|
|
continue
|
|
|
|
offset += part_size
|
|
if not result.bytes:
|
|
if in_memory:
|
|
f.flush()
|
|
return f.getvalue()
|
|
else:
|
|
return getattr(result, 'type', '')
|
|
|
|
self._log[__name__].debug('Saving %d more bytes',
|
|
len(result.bytes))
|
|
f.write(result.bytes)
|
|
if progress_callback:
|
|
progress_callback(f.tell(), file_size)
|
|
finally:
|
|
if exported:
|
|
await self._return_exported_sender(sender)
|
|
elif sender != self._sender:
|
|
await sender.disconnect()
|
|
if isinstance(file, str) or in_memory:
|
|
f.close()
|
|
|
|
# endregion
|
|
|
|
# region Private methods
|
|
|
|
@staticmethod
|
|
def _get_thumb(thumbs, thumb):
|
|
if thumb is None:
|
|
return thumbs[-1]
|
|
elif isinstance(thumb, int):
|
|
return thumbs[thumb]
|
|
elif isinstance(thumb, (types.PhotoSize, types.PhotoCachedSize,
|
|
types.PhotoStrippedSize)):
|
|
return thumb
|
|
else:
|
|
return None
|
|
|
|
def _download_cached_photo_size(self, size, file):
|
|
# No need to download anything, simply write the bytes
|
|
if file is bytes:
|
|
return size.bytes
|
|
elif isinstance(file, str):
|
|
helpers.ensure_parent_dir_exists(file)
|
|
f = open(file, 'wb')
|
|
else:
|
|
f = file
|
|
|
|
try:
|
|
f.write(utils.stripped_photo_to_jpg(size.bytes)
|
|
if isinstance(size, types.PhotoStrippedSize)
|
|
else size.bytes)
|
|
finally:
|
|
if isinstance(file, str):
|
|
f.close()
|
|
return file
|
|
|
|
async def _download_photo(self, photo, file, date, thumb, progress_callback):
|
|
"""Specialized version of .download_media() for photos"""
|
|
# Determine the photo and its largest size
|
|
if isinstance(photo, types.MessageMediaPhoto):
|
|
photo = photo.photo
|
|
if not isinstance(photo, types.Photo):
|
|
return
|
|
|
|
size = self._get_thumb(photo.sizes, thumb)
|
|
if not size or isinstance(size, types.PhotoSizeEmpty):
|
|
return
|
|
|
|
file = self._get_proper_filename(file, 'photo', '.jpg', date=date)
|
|
if isinstance(size, (types.PhotoCachedSize, types.PhotoStrippedSize)):
|
|
return self._download_cached_photo_size(size, file)
|
|
|
|
result = await self.download_file(
|
|
types.InputPhotoFileLocation(
|
|
id=photo.id,
|
|
access_hash=photo.access_hash,
|
|
file_reference=photo.file_reference,
|
|
thumb_size=size.type
|
|
),
|
|
file,
|
|
file_size=size.size,
|
|
progress_callback=progress_callback
|
|
)
|
|
return result if file is bytes else file
|
|
|
|
@staticmethod
|
|
def _get_kind_and_names(attributes):
|
|
"""Gets kind and possible names for :tl:`DocumentAttribute`."""
|
|
kind = 'document'
|
|
possible_names = []
|
|
for attr in attributes:
|
|
if isinstance(attr, types.DocumentAttributeFilename):
|
|
possible_names.insert(0, attr.file_name)
|
|
|
|
elif isinstance(attr, types.DocumentAttributeAudio):
|
|
kind = 'audio'
|
|
if attr.performer and attr.title:
|
|
possible_names.append('{} - {}'.format(
|
|
attr.performer, attr.title
|
|
))
|
|
elif attr.performer:
|
|
possible_names.append(attr.performer)
|
|
elif attr.title:
|
|
possible_names.append(attr.title)
|
|
elif attr.voice:
|
|
kind = 'voice'
|
|
|
|
return kind, possible_names
|
|
|
|
async def _download_document(
|
|
self, document, file, date, thumb, progress_callback):
|
|
"""Specialized version of .download_media() for documents."""
|
|
if isinstance(document, types.MessageMediaDocument):
|
|
document = document.document
|
|
if not isinstance(document, types.Document):
|
|
return
|
|
|
|
kind, possible_names = self._get_kind_and_names(document.attributes)
|
|
file = self._get_proper_filename(
|
|
file, kind, utils.get_extension(document),
|
|
date=date, possible_names=possible_names
|
|
)
|
|
|
|
if thumb is None:
|
|
size = None
|
|
else:
|
|
size = self._get_thumb(document.thumbs, thumb)
|
|
if isinstance(size, (types.PhotoCachedSize, types.PhotoStrippedSize)):
|
|
return self._download_cached_photo_size(size, file)
|
|
|
|
result = await self.download_file(
|
|
types.InputDocumentFileLocation(
|
|
id=document.id,
|
|
access_hash=document.access_hash,
|
|
file_reference=document.file_reference,
|
|
thumb_size=size.type if size else ''
|
|
),
|
|
file,
|
|
file_size=size.size if size else document.size,
|
|
progress_callback=progress_callback
|
|
)
|
|
|
|
return result if file is bytes else file
|
|
|
|
@classmethod
|
|
def _download_contact(cls, mm_contact, file):
|
|
"""
|
|
Specialized version of .download_media() for contacts.
|
|
Will make use of the vCard 4.0 format.
|
|
"""
|
|
first_name = mm_contact.first_name
|
|
last_name = mm_contact.last_name
|
|
phone_number = mm_contact.phone_number
|
|
|
|
# Remove these pesky characters
|
|
first_name = first_name.replace(';', '')
|
|
last_name = (last_name or '').replace(';', '')
|
|
result = (
|
|
'BEGIN:VCARD\n'
|
|
'VERSION:4.0\n'
|
|
'N:{f};{l};;;\n'
|
|
'FN:{f} {l}\n'
|
|
'TEL;TYPE=cell;VALUE=uri:tel:+{p}\n'
|
|
'END:VCARD\n'
|
|
).format(f=first_name, l=last_name, p=phone_number).encode('utf-8')
|
|
|
|
if file is bytes:
|
|
return result
|
|
elif isinstance(file, str):
|
|
file = cls._get_proper_filename(
|
|
file, 'contact', '.vcard',
|
|
possible_names=[first_name, phone_number, last_name]
|
|
)
|
|
f = open(file, 'wb', encoding='utf-8')
|
|
else:
|
|
f = file
|
|
|
|
try:
|
|
f.write(result)
|
|
finally:
|
|
# Only close the stream if we opened it
|
|
if isinstance(file, str):
|
|
f.close()
|
|
|
|
return file
|
|
|
|
@classmethod
|
|
async def _download_web_document(cls, web, file, progress_callback):
|
|
"""
|
|
Specialized version of .download_media() for web documents.
|
|
"""
|
|
if not aiohttp:
|
|
raise ValueError(
|
|
'Cannot download web documents without the aiohttp '
|
|
'dependency install it (pip install aiohttp)'
|
|
)
|
|
|
|
# TODO Better way to get opened handles of files and auto-close
|
|
in_memory = file is bytes
|
|
if in_memory:
|
|
f = io.BytesIO()
|
|
elif isinstance(file, str):
|
|
kind, possible_names = cls._get_kind_and_names(web.attributes)
|
|
file = cls._get_proper_filename(
|
|
file, kind, utils.get_extension(web),
|
|
possible_names=possible_names
|
|
)
|
|
f = open(file, 'wb')
|
|
else:
|
|
f = file
|
|
|
|
try:
|
|
with aiohttp.ClientSession() as session:
|
|
# TODO Use progress_callback; get content length from response
|
|
# https://github.com/telegramdesktop/tdesktop/blob/c7e773dd9aeba94e2be48c032edc9a78bb50234e/Telegram/SourceFiles/ui/images.cpp#L1318-L1319
|
|
async with session.get(web.url) as response:
|
|
while True:
|
|
chunk = await response.content.read(128 * 1024)
|
|
if not chunk:
|
|
break
|
|
f.write(chunk)
|
|
finally:
|
|
if isinstance(file, str) or file is bytes:
|
|
f.close()
|
|
|
|
return f.getvalue() if in_memory else file
|
|
|
|
@staticmethod
|
|
def _get_proper_filename(file, kind, extension,
|
|
date=None, possible_names=None):
|
|
"""Gets a proper filename for 'file', if this is a path.
|
|
|
|
'kind' should be the kind of the output file (photo, document...)
|
|
'extension' should be the extension to be added to the file if
|
|
the filename doesn't have any yet
|
|
'date' should be when this file was originally sent, if known
|
|
'possible_names' should be an ordered list of possible names
|
|
|
|
If no modification is made to the path, any existing file
|
|
will be overwritten.
|
|
If any modification is made to the path, this method will
|
|
ensure that no existing file will be overwritten.
|
|
"""
|
|
if isinstance(file, pathlib.Path):
|
|
file = str(file.absolute())
|
|
|
|
if file is not None and not isinstance(file, str):
|
|
# Probably a stream-like object, we cannot set a filename here
|
|
return file
|
|
|
|
if file is None:
|
|
file = ''
|
|
elif os.path.isfile(file):
|
|
# Make no modifications to valid existing paths
|
|
return file
|
|
|
|
if os.path.isdir(file) or not file:
|
|
try:
|
|
name = None if possible_names is None else next(
|
|
x for x in possible_names if x
|
|
)
|
|
except StopIteration:
|
|
name = None
|
|
|
|
if not name:
|
|
if not date:
|
|
date = datetime.datetime.now()
|
|
name = '{}_{}-{:02}-{:02}_{:02}-{:02}-{:02}'.format(
|
|
kind,
|
|
date.year, date.month, date.day,
|
|
date.hour, date.minute, date.second,
|
|
)
|
|
file = os.path.join(file, name)
|
|
|
|
directory, name = os.path.split(file)
|
|
name, ext = os.path.splitext(name)
|
|
if not ext:
|
|
ext = extension
|
|
|
|
result = os.path.join(directory, name + ext)
|
|
if not os.path.isfile(result):
|
|
return result
|
|
|
|
i = 1
|
|
while True:
|
|
result = os.path.join(directory, '{} ({}){}'.format(name, i, ext))
|
|
if not os.path.isfile(result):
|
|
return result
|
|
i += 1
|
|
|
|
# endregion
|