39 lines
1.0 KiB
Python
39 lines
1.0 KiB
Python
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import os
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from flask import redirect, request, url_for
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from werkzeug.datastructures import FileStorage
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from werkzeug.wrappers.response import Response
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from ..exceptions import ErrorException
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# Helper for a standard file upload process
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def upload_helper(
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name: str,
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endpoint: str,
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/,
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extensions: list[str] = [],
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) -> FileStorage | Response:
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# Bogus submit
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if name not in request.files:
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return redirect(url_for(endpoint))
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file = request.files[name]
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# Empty submit
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if not file or file.filename is None or file.filename == '':
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return redirect(url_for(endpoint, empty_file=True))
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# Not allowed extension
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# Security: not really
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if len(extensions):
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_, extension = os.path.splitext(file.filename)
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if extension not in extensions:
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raise ErrorException('{file} extension is not an allowed. Expected: {allowed}'.format( # noqa: E501
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file=file.filename,
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allowed=', '.join(extensions)
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))
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return file
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