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76 lines
2.6 KiB
EmacsLisp
76 lines
2.6 KiB
EmacsLisp
;;; tramp-hack.el --- -*- lexical-binding: t -*-
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;; Copyright (C) 2023 Benson Chu
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;; Author: Benson Chu <bensonchu457@gmail.com>
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;; Created: [2023-07-20 10:01]
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;; This file is not part of GNU Emacs
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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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;; 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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;; 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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;;; Commentary:
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;;; Code:
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(advice-add tramp-ssh-controlmaster-options
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:override
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#'my/tramp-ssh-controlmaster-options)
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(defun my/tramp-ssh-controlmaster-options (vec)
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"Return the Control* arguments of the local ssh."
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(cond
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;; No options to be computed.
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((or (null tramp-use-connection-share)
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(null (assoc "%c" (tramp-get-method-parameter vec 'tramp-login-args))))
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"")
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;; Use plink option.
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((string-match-p
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(rx "plink" (? ".exe") eol)
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(tramp-get-method-parameter vec 'tramp-login-program))
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(if (eq tramp-use-connection-share 'suppress)
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"-noshare" "-share"))
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;; There is already a value to be used.
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((and (eq tramp-use-connection-share t)
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(stringp tramp-ssh-controlmaster-options))
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tramp-ssh-controlmaster-options)
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;; We can't auto-compute the options
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((ignore-errors
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(not (tramp-ssh-option-exists-p vec "ControlMaster=auto")))
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"")
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;; Determine the options.
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(t (ignore-errors
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;; ControlMaster and ControlPath options are introduced in OpenSSH 3.9.
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(concat
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"-o ControlMaster="
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(if (eq tramp-use-connection-share 'suppress)
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"no" "auto")
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" -o ControlPath="
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(if (eq tramp-use-connection-share 'suppress)
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"none"
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;; Hashed tokens are introduced in OpenSSH 6.7.
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(if (tramp-ssh-option-exists-p vec "ControlPath=tramp.%C")
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"tramp.%%C" "tramp.%%r@%%h:%%p"))
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;; ControlPersist option is introduced in OpenSSH 5.6.
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(when (and (not (eq tramp-use-connection-share 'suppress))
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(tramp-ssh-option-exists-p vec "ControlPersist=no"))
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" -o ControlPersist=no"))))))
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(provide 'tramp-hack)
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;;; tramp-hack.el ends here
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