61 lines
1.6 KiB
Python
Executable File
61 lines
1.6 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# vim:fenc=utf-8 et ts=4 sts=4 sw=4
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#
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# Copyright © 2022 Maxime “pep” Buquet <pep@bouah.net>
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#
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# This file is licensed under GPL-3.0-or-later
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"""
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AESGCM URLs downloader
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"""
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import sys
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import asyncio
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from io import BytesIO
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from pathlib import Path
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from aiohttp import ClientSession
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from slixmpp.version import __version__ as slixmpp_version
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from slixmpp.plugins.xep_0454 import XEP_0454
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class InvalidURI(Exception):
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"""Raised when an invalid aesgcm URI is specified"""
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def __init__(self, url) -> None:
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self.url = url
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async def handle_file(uri: str) -> None:
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"""Downloads, decrypts, and writes specified URI"""
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try:
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aesurl, fragment = uri.rsplit('#', 1)
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except ValueError as exn:
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raise InvalidURI(uri) from exn
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url = aesurl.replace('aesgcm://', 'https://')
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filename = Path(url.rsplit('/', 1)[1])
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async with ClientSession(headers={'User-Agent': 'slixmpp ' + slixmpp_version}) as session:
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async with session.get(url) as response:
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print(f'Got response for {url}')
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input_file = BytesIO(await response.read())
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with filename.open('wb') as file:
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print(f'Writing to {filename}')
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file.write(XEP_0454.decrypt(input_file, fragment))
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if __name__ == '__main__':
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if len(sys.argv) != 2:
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print('usage: aesgcm-dl <URI>', file=sys.stderr)
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sys.exit(1)
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try:
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asyncio.run(handle_file(sys.argv[1]))
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except InvalidURI as exn:
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print(f'Invalid aesgcm URI: {exn.url}', file=sys.stderr)
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sys.exit(2)
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