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# (c) 2016, James Tanner 

# (c) 2016, Toshio Kuratomi <tkuratomi@ansible.com> 

# 

# This file is part of Ansible 

# 

# Ansible is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# Ansible is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with Ansible. If not, see <http://www.gnu.org/licenses/>. 

 

# Make coding more python3-ish 

from __future__ import (absolute_import, division, print_function) 

__metaclass__ = type 

 

import subprocess 

 

from ansible.module_utils._text import to_bytes 

 

 

_HAS_CONTROLPERSIST = {} 

 

 

def check_for_controlpersist(ssh_executable): 

try: 

# If we've already checked this executable 

return _HAS_CONTROLPERSIST[ssh_executable] 

except KeyError: 

pass 

 

b_ssh_exec = to_bytes(ssh_executable, errors='surrogate_or_strict') 

has_cp = True 

try: 

cmd = subprocess.Popen([b_ssh_exec, '-o', 'ControlPersist'], stdout=subprocess.PIPE, stderr=subprocess.PIPE) 

(out, err) = cmd.communicate() 

43 ↛ 44line 43 didn't jump to line 44, because the condition on line 43 was never true if b"Bad configuration option" in err or b"Usage:" in err: 

has_cp = False 

except OSError: 

has_cp = False 

 

_HAS_CONTROLPERSIST[ssh_executable] = has_cp 

return has_cp