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https://codeberg.org/polarisfm/youtube-dl
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[YoutubeDL] urlopen: use build_opener again
Otherwise we would need to manually add handlers like HTTPRedirectHandler, instead we add a customized FileHandler instance that raises an error.
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@ -1986,14 +1986,19 @@ class YoutubeDL(object):
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https_handler = make_HTTPS_handler(self.params, debuglevel=debuglevel)
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ydlh = YoutubeDLHandler(self.params, debuglevel=debuglevel)
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data_handler = compat_urllib_request_DataHandler()
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unknown_handler = compat_urllib_request.UnknownHandler()
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handlers = (proxy_handler, https_handler, cookie_processor, ydlh, data_handler, unknown_handler)
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# we don't use build_opener because it automatically adds FileHandler,
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# which can be used for malicious purposes (see
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# When passing our own FileHandler instance, build_opener won't add the
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# default FileHandler and allows us to disable the file protocol, which
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# can be used for malicious purposes (see
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# https://github.com/rg3/youtube-dl/issues/8227)
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opener = compat_urllib_request.OpenerDirector()
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for handler in handlers:
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opener.add_handler(handler)
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file_handler = compat_urllib_request.FileHandler()
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def file_open(*args, **kwargs):
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raise compat_urllib_error.URLError('file protocol is disabled')
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file_handler.file_open = file_open
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opener = compat_urllib_request.build_opener(
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proxy_handler, https_handler, cookie_processor, ydlh, data_handler, file_handler)
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# Delete the default user-agent header, which would otherwise apply in
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# cases where our custom HTTP handler doesn't come into play
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