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37 lines
1.1 KiB
Python
Executable file
37 lines
1.1 KiB
Python
Executable file
#!/usr/bin/env python3
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import os
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import subprocess
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import sys
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from urllib.parse import urlparse
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proxy = next(os.environ[_] for _ in ("HTTP_PROXY", "HTTPS_PROXY") if _ in os.environ)
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parsed = urlparse(proxy)
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proxy_protocols = {
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"http": "connect",
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"https": "connect",
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"socks": "5",
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"socks5": "5",
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"socks4": "4",
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"socks4a": "4",
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}
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if parsed.scheme not in proxy_protocols:
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raise TypeError('unsupported proxy protocol: "{}"'.format(parsed.scheme))
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def make_argv():
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yield "nc"
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if sys.platform in {'linux', 'cygwin'}:
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# caveats: the built-in netcat of most linux distributions and cygwin support proxy type
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# caveats: macOS built-in netcat command not supported proxy-type
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yield "-X" # --proxy-type
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# Supported protocols are 4 (SOCKS v4), 5 (SOCKS v5) and connect (HTTP proxy).
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# Default SOCKS v5 is used.
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yield proxy_protocols[parsed.scheme]
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yield "-x" # --proxy
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yield parsed.netloc # proxy-host:proxy-port
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yield sys.argv[1] # host
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yield sys.argv[2] # port
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subprocess.call(make_argv())
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