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https://github.com/mofeng-git/One-KVM.git
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49 lines
2.2 KiB
Python
49 lines
2.2 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main PiKVM daemon. #
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# #
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# Copyright (C) 2018-2024 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import socket
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import errno
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# =====
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def is_ipv6_enabled() -> bool:
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if not socket.has_ipv6:
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# If the socket library has no support for IPv6,
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# then the question is moot as we can't use IPv6 anyways.
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return False
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try:
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with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as sock:
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sock.bind(("::1", 0))
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return True
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except OSError as ex:
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if ex.errno in [errno.EADDRNOTAVAIL, errno.EAFNOSUPPORT]:
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return False
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if ex.errno == errno.EADDRINUSE:
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return True
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raise
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def get_listen_host(host: str) -> str:
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if len(host) == 0:
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return ("::" if is_ipv6_enabled() else "0.0.0.0")
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return host
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