49 lines
1 KiB
Python
Executable file
49 lines
1 KiB
Python
Executable file
#! /usr/bin/env python3
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# encoding: utf-8
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import jsmin
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import json
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import subprocess
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import sys
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def load_cfg(path):
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with open(path) as f:
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return json.loads(jsmin.jsmin(f.read()))
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def safe_get(d, k, alt):
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"""
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Returns d[k] or alt
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"""
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if k in d:
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return d[k]
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else:
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return alt
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if __name__ == "__main__":
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# try config files in the order they are passed to us
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# first one wins
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cfg = None
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for path in sys.argv[1:]:
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try:
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cfg = load_cfg(path)
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print("> using %s" %(path))
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break
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except Exception as e:
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print("! cfg file %s failed to load (%s)" %(path, e))
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if not cfg:
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print("! unable to load any configuration")
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sys.exit(1)
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command = ["/usr/bin/ssh", "-o", "ServerAliveInterval=45", "-o", "ServerAliveCountMax=2", "-o", "ExitOnForwardFailure=yes", "-N", "-p", str(safe_get(cfg, "port", 22))]
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for m in cfg["mapping"]:
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command.append("-R")
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command.append("%d:localhost:%d" %(m["remote"], m["local"]))
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command.append("%s@%s" %(cfg["user"], cfg["host"]))
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subprocess.run(command)
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