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ohmyzsh/plugins/shell-proxy/ssh-proxy.py

37 lines
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Python
Executable file

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