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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
# (c) 2016, Toshio Kuratomi <tkuratomi@ansible.com>
# (c) 2020, Steven Robertson <srtrumpetaggie@gmail.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
import os
import stat
import platform
import subprocess
import sys
from ansible.module_utils.basic import AnsibleModule
# trace_realpath() and _join_tracepath() adapated from stdlib posixpath.py
# https://github.com/python/cpython/blob/v3.12.6/Lib/posixpath.py#L423-L492
# Copyright (c) 2001 - 2023 Python Software Foundation
# Copyright (c) 2024 Alex Willmer <alex@moreati.org.uk>
# License: Python Software Foundation License Version 2
def trace_realpath(filename, strict=False):
"""
Return the canonical path of the specified filename, and a trace of
the route taken, eliminating any symbolic links encountered in the path.
"""
path, trace, ok = _join_tracepath(filename[:0], filename, strict, seen={}, trace=[])
return os.path.abspath(path), trace
def _join_tracepath(path, rest, strict, seen, trace):
"""
Join two paths, normalizing and eliminating any symbolic links encountered
in the second path.
"""
trace.append(rest)
if isinstance(path, bytes):
sep = b'/'
curdir = b'.'
pardir = b'..'
else:
sep = '/'
curdir = '.'
pardir = '..'
if os.path.isabs(rest):
rest = rest[1:]
path = sep
while rest:
name, _, rest = rest.partition(sep)
if not name or name == curdir:
# current dir
continue
if name == pardir:
# parent dir
if path:
path, name = os.path.split(path)
if name == pardir:
path = os.path.join(path, pardir, pardir)
else:
path = pardir
continue
newpath = os.path.join(path, name)
try:
st = os.lstat(newpath)
except OSError:
if strict:
raise
is_link = False
else:
is_link = stat.S_ISLNK(st.st_mode)
if not is_link:
path = newpath
continue
# Resolve the symbolic link
if newpath in seen:
# Already seen this path
path = seen[newpath]
if path is not None:
# use cached value
continue
# The symlink is not resolved, so we must have a symlink loop.
if strict:
# Raise OSError(errno.ELOOP)
os.stat(newpath)
else:
# Return already resolved part + rest of the path unchanged.
return os.path.join(newpath, rest), trace, False
seen[newpath] = None # not resolved symlink
path, trace, ok = _join_tracepath(path, os.readlink(newpath), strict, seen, trace)
if not ok:
return os.path.join(path, rest), False
seen[newpath] = path # resolved symlink
return path, trace, True
def main():
module = AnsibleModule(argument_spec=dict(
facts_copy=dict(type=dict, default={}),
facts_to_override=dict(type=dict, default={})
))
# revert the Mitogen OSX tweak since discover_interpreter() doesn't return this info
# NB This must be synced with mitogen.parent.Connection.get_boot_command()
platform_release_major = int(platform.release().partition('.')[0])
if sys.modules.get('mitogen') and sys.platform == 'darwin':
if platform_release_major < 19 and sys.executable == '/usr/bin/python2.7':
sys.executable = '/usr/bin/python'
if platform_release_major in (20, 21) and sys.version_info[:2] == (2, 7):
# only for tests to check version of running interpreter -- Mac 10.15+ changed python2
# so it looks like it's /usr/bin/python but actually it's /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
sys.executable = "/usr/bin/python"
facts_copy = module.params['facts_copy']
discovered_interpreter_python = facts_copy['discovered_interpreter_python']
d_i_p_realpath, d_i_p_trace = trace_realpath(discovered_interpreter_python)
d_i_p_proc = subprocess.Popen(
[discovered_interpreter_python, '-c', 'import sys; print(sys.executable)'],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
)
d_i_p_stdout, d_i_p_stderr = d_i_p_proc.communicate()
sys_exec_realpath, sys_exec_trace = trace_realpath(sys.executable)
result = {
'changed': False,
'ansible_facts': module.params['facts_to_override'],
'discovered_and_running_samefile': os.path.samefile(
os.path.realpath(discovered_interpreter_python),
os.path.realpath(sys.executable),
),
'discovered_python': {
'as_seen': discovered_interpreter_python,
'resolved': d_i_p_realpath,
'trace': [os.path.abspath(p) for p in d_i_p_trace],
'sys': {
'executable': {
'as_seen': d_i_p_stdout.decode('ascii').rstrip('\n'),
'proc': {
'stderr': d_i_p_stderr.decode('ascii'),
'returncode': d_i_p_proc.returncode,
},
},
},
},
'running_python': {
'platform': {
'release': {
'major': platform_release_major,
},
},
'sys': {
'executable': {
'as_seen': sys.executable,
'resolved': sys_exec_realpath,
'trace': [os.path.abspath(p) for p in sys_exec_trace],
},
'platform': sys.platform,
'version_info': {
'major': sys.version_info[0],
'minor': sys.version_info[1],
},
},
},
}
module.exit_json(**result)
if __name__ == '__main__':
main()
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