initial

dot_oh-my-zsh/plugins/shell-proxy/executable_ssh-proxy.py

@@ -0,0 +1,36 @@
+#!/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 == 'linux':
+        # 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())