319 lines
8.0 KiB
Python
Executable File
319 lines
8.0 KiB
Python
Executable File
#!/usr/bin/env -S python3 -u
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# Copyright © 2018 Damir Jelić <poljar@termina.org.uk>
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#
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# Permission to use, copy, modify, and/or distribute this software for
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# any purpose with or without fee is hereby granted, provided that the
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# above copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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# CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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import os
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import json
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import magic
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import requests
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import argparse
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from urllib.parse import urlparse
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from itertools import zip_longest
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import urllib3
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from nio import Api, UploadResponse, UploadError
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from nio.crypto import encrypt_attachment
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from json.decoder import JSONDecodeError
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urllib3.disable_warnings()
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def to_stdout(message):
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print(json.dumps(message), flush=True)
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def error(e):
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message = {
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"type": "status",
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"status": "error",
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"message": str(e)
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}
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to_stdout(message)
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os.sys.exit()
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def mime_from_file(file):
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try:
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t = magic.from_file(file, mime=True)
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except AttributeError:
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try:
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m = magic.open(magic.MIME)
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m.load()
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t, _ = m.file(file).split(';')
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except AttributeError:
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error('Your \'magic\' module is unsupported. '
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'Install either https://github.com/ahupp/python-magic '
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'or https://github.com/file/file/tree/master/python '
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'(official \'file\' python bindings, available as the '
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'python-magic package on many distros)')
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raise SystemExit
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return t
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class Upload(object):
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def __init__(self, file, chunksize=1 << 13):
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self.file = file
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self.filename = os.path.basename(file)
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self.chunksize = chunksize
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self.totalsize = os.path.getsize(file)
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self.mimetype = mime_from_file(file)
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self.readsofar = 0
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def send_progress(self):
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message = {
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"type": "progress",
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"data": self.readsofar
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}
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to_stdout(message)
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def __iter__(self):
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with open(self.file, 'rb') as file:
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while True:
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data = file.read(self.chunksize)
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if not data:
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break
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self.readsofar += len(data)
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self.send_progress()
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yield data
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def __len__(self):
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return self.totalsize
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def chunk_bytes(iterable, n):
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args = [iter(iterable)] * n
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return (
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bytes(
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(filter(lambda x: x is not None, chunk))
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) for chunk in zip_longest(*args)
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)
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class EncryptedUpload(Upload):
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def __init__(self, file, chunksize=1 << 13):
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super().__init__(file, chunksize)
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self.source_mimetype = self.mimetype
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self.mimetype = "application/octet-stream"
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with open(self.filename, "rb") as file:
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self.ciphertext, self.file_keys = encrypt_attachment(file.read())
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def send_progress(self):
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message = {
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"type": "progress",
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"data": self.readsofar
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}
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to_stdout(message)
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def __iter__(self):
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for chunk in chunk_bytes(self.ciphertext, self.chunksize):
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self.readsofar += len(chunk)
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self.send_progress()
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yield chunk
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def __len__(self):
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return len(self.ciphertext)
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class IterableToFileAdapter(object):
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def __init__(self, iterable):
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self.iterator = iter(iterable)
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self.length = len(iterable)
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def read(self, size=-1):
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return next(self.iterator, b'')
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def __len__(self):
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return self.length
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def upload_process(args):
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file_path = os.path.expanduser(args.file)
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thumbnail = None
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try:
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if args.encrypt:
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upload = EncryptedUpload(file_path)
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if upload.source_mimetype.startswith("image"):
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# TODO create a thumbnail
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thumbnail = None
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else:
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upload = Upload(file_path)
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except (FileNotFoundError, OSError, IOError) as e:
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error(e)
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try:
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url = urlparse(args.homeserver)
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except ValueError as e:
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error(e)
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upload_url = ("https://{}".format(args.homeserver)
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if not url.scheme else args.homeserver)
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_, api_path, _ = Api.upload(args.access_token, upload.filename)
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upload_url += api_path
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headers = {
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"Content-type": upload.mimetype,
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}
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proxies = {}
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if args.proxy_address:
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user = args.proxy_user or ""
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if args.proxy_password:
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user += ":{}".format(args.proxy_password)
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if user:
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user += "@"
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proxies = {
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"https": "{}://{}{}:{}/".format(
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args.proxy_type,
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user,
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args.proxy_address,
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args.proxy_port
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)
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}
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message = {
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"type": "status",
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"status": "started",
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"total": upload.totalsize,
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"file_name": upload.filename,
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}
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if isinstance(upload, EncryptedUpload):
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message["mimetype"] = upload.source_mimetype
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else:
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message["mimetype"] = upload.mimetype
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to_stdout(message)
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session = requests.Session()
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session.trust_env = False
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try:
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r = session.post(
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url=upload_url,
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auth=None,
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headers=headers,
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data=IterableToFileAdapter(upload),
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verify=(not args.insecure),
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proxies=proxies
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)
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except (requests.exceptions.RequestException, OSError) as e:
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error(e)
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try:
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json_response = json.loads(r.content)
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except JSONDecodeError:
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error(r.content)
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response = UploadResponse.from_dict(json_response)
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if isinstance(response, UploadError):
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error(str(response))
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message = {
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"type": "status",
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"status": "done",
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"url": response.content_uri
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}
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if isinstance(upload, EncryptedUpload):
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message["file_keys"] = upload.file_keys
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to_stdout(message)
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return 0
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def main():
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parser = argparse.ArgumentParser(
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description="Encrypt and upload matrix attachments"
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)
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parser.add_argument("file", help="the file that will be uploaded")
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parser.add_argument(
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"homeserver",
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type=str,
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help="the address of the homeserver"
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)
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parser.add_argument(
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"access_token",
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type=str,
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help="the access token to use for the upload"
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)
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parser.add_argument(
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"--encrypt",
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action="store_const",
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const=True,
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default=False,
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help="encrypt the file before uploading it"
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)
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parser.add_argument(
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"--insecure",
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action="store_const",
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const=True,
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default=False,
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help="disable SSL certificate verification"
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)
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parser.add_argument(
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"--proxy-type",
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choices=[
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"http",
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"socks4",
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"socks5"
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],
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default="http",
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help="type of the proxy that will be used to establish a connection"
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)
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parser.add_argument(
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"--proxy-address",
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type=str,
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help="address of the proxy that will be used to establish a connection"
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)
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parser.add_argument(
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"--proxy-port",
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type=int,
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default=8080,
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help="port of the proxy that will be used to establish a connection"
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)
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parser.add_argument(
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"--proxy-user",
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type=str,
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help="user that will be used for authentication on the proxy"
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)
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parser.add_argument(
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"--proxy-password",
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type=str,
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help="password that will be used for authentication on the proxy"
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)
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args = parser.parse_args()
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upload_process(args)
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if __name__ == "__main__":
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main()
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