mirror of
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a719c8f4bd
When libc_ver() is called with an executable, the
os.confstr('CS_GNU_LIBC_VERSION') fast-path cannot be taken. Modify
platform.platform() to call libc_ver() without executable, instead of
calling libc_ver(sys.executable), since sys.executable is already the
default value.
1239 lines
39 KiB
Python
Executable File
1239 lines
39 KiB
Python
Executable File
#!/usr/bin/env python3
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""" This module tries to retrieve as much platform-identifying data as
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possible. It makes this information available via function APIs.
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If called from the command line, it prints the platform
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information concatenated as single string to stdout. The output
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format is useable as part of a filename.
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"""
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# This module is maintained by Marc-Andre Lemburg <mal@egenix.com>.
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# If you find problems, please submit bug reports/patches via the
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# Python bug tracker (http://bugs.python.org) and assign them to "lemburg".
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#
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# Still needed:
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# * support for MS-DOS (PythonDX ?)
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# * support for Amiga and other still unsupported platforms running Python
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# * support for additional Linux distributions
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#
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# Many thanks to all those who helped adding platform-specific
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# checks (in no particular order):
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#
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# Charles G Waldman, David Arnold, Gordon McMillan, Ben Darnell,
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# Jeff Bauer, Cliff Crawford, Ivan Van Laningham, Josef
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# Betancourt, Randall Hopper, Karl Putland, John Farrell, Greg
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# Andruk, Just van Rossum, Thomas Heller, Mark R. Levinson, Mark
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# Hammond, Bill Tutt, Hans Nowak, Uwe Zessin (OpenVMS support),
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# Colin Kong, Trent Mick, Guido van Rossum, Anthony Baxter, Steve
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# Dower
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#
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# History:
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#
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# <see CVS and SVN checkin messages for history>
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#
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# 1.0.8 - changed Windows support to read version from kernel32.dll
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# 1.0.7 - added DEV_NULL
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# 1.0.6 - added linux_distribution()
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# 1.0.5 - fixed Java support to allow running the module on Jython
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# 1.0.4 - added IronPython support
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# 1.0.3 - added normalization of Windows system name
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# 1.0.2 - added more Windows support
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# 1.0.1 - reformatted to make doc.py happy
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# 1.0.0 - reformatted a bit and checked into Python CVS
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# 0.8.0 - added sys.version parser and various new access
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# APIs (python_version(), python_compiler(), etc.)
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# 0.7.2 - fixed architecture() to use sizeof(pointer) where available
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# 0.7.1 - added support for Caldera OpenLinux
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# 0.7.0 - some fixes for WinCE; untabified the source file
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# 0.6.2 - support for OpenVMS - requires version 1.5.2-V006 or higher and
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# vms_lib.getsyi() configured
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# 0.6.1 - added code to prevent 'uname -p' on platforms which are
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# known not to support it
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# 0.6.0 - fixed win32_ver() to hopefully work on Win95,98,NT and Win2k;
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# did some cleanup of the interfaces - some APIs have changed
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# 0.5.5 - fixed another type in the MacOS code... should have
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# used more coffee today ;-)
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# 0.5.4 - fixed a few typos in the MacOS code
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# 0.5.3 - added experimental MacOS support; added better popen()
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# workarounds in _syscmd_ver() -- still not 100% elegant
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# though
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# 0.5.2 - fixed uname() to return '' instead of 'unknown' in all
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# return values (the system uname command tends to return
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# 'unknown' instead of just leaving the field empty)
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# 0.5.1 - included code for slackware dist; added exception handlers
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# to cover up situations where platforms don't have os.popen
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# (e.g. Mac) or fail on socket.gethostname(); fixed libc
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# detection RE
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# 0.5.0 - changed the API names referring to system commands to *syscmd*;
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# added java_ver(); made syscmd_ver() a private
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# API (was system_ver() in previous versions) -- use uname()
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# instead; extended the win32_ver() to also return processor
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# type information
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# 0.4.0 - added win32_ver() and modified the platform() output for WinXX
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# 0.3.4 - fixed a bug in _follow_symlinks()
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# 0.3.3 - fixed popen() and "file" command invocation bugs
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# 0.3.2 - added architecture() API and support for it in platform()
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# 0.3.1 - fixed syscmd_ver() RE to support Windows NT
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# 0.3.0 - added system alias support
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# 0.2.3 - removed 'wince' again... oh well.
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# 0.2.2 - added 'wince' to syscmd_ver() supported platforms
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# 0.2.1 - added cache logic and changed the platform string format
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# 0.2.0 - changed the API to use functions instead of module globals
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# since some action take too long to be run on module import
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# 0.1.0 - first release
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#
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# You can always get the latest version of this module at:
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#
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# http://www.egenix.com/files/python/platform.py
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#
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# If that URL should fail, try contacting the author.
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__copyright__ = """
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Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com
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Copyright (c) 2000-2010, eGenix.com Software GmbH; mailto:info@egenix.com
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee or royalty is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation or portions thereof, including modifications,
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that you make.
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EGENIX.COM SOFTWARE GMBH DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
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INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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WITH THE USE OR PERFORMANCE OF THIS SOFTWARE !
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"""
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__version__ = '1.0.8'
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import collections
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import os
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import re
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import sys
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### Globals & Constants
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# Helper for comparing two version number strings.
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# Based on the description of the PHP's version_compare():
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# http://php.net/manual/en/function.version-compare.php
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_ver_stages = {
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# any string not found in this dict, will get 0 assigned
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'dev': 10,
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'alpha': 20, 'a': 20,
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'beta': 30, 'b': 30,
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'c': 40,
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'RC': 50, 'rc': 50,
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# number, will get 100 assigned
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'pl': 200, 'p': 200,
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}
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_component_re = re.compile(r'([0-9]+|[._+-])')
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def _comparable_version(version):
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result = []
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for v in _component_re.split(version):
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if v not in '._+-':
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try:
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v = int(v, 10)
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t = 100
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except ValueError:
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t = _ver_stages.get(v, 0)
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result.extend((t, v))
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return result
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### Platform specific APIs
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_libc_search = re.compile(b'(__libc_init)'
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b'|'
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b'(GLIBC_([0-9.]+))'
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b'|'
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br'(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)', re.ASCII)
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def libc_ver(executable=None, lib='', version='', chunksize=16384):
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""" Tries to determine the libc version that the file executable
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(which defaults to the Python interpreter) is linked against.
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Returns a tuple of strings (lib,version) which default to the
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given parameters in case the lookup fails.
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Note that the function has intimate knowledge of how different
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libc versions add symbols to the executable and thus is probably
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only useable for executables compiled using gcc.
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The file is read and scanned in chunks of chunksize bytes.
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"""
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if executable is None:
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try:
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ver = os.confstr('CS_GNU_LIBC_VERSION')
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# parse 'glibc 2.28' as ('glibc', '2.28')
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parts = ver.split(maxsplit=1)
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if len(parts) == 2:
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return tuple(parts)
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except (AttributeError, ValueError, OSError):
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# os.confstr() or CS_GNU_LIBC_VERSION value not available
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pass
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executable = sys.executable
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V = _comparable_version
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if hasattr(os.path, 'realpath'):
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# Python 2.2 introduced os.path.realpath(); it is used
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# here to work around problems with Cygwin not being
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# able to open symlinks for reading
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executable = os.path.realpath(executable)
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with open(executable, 'rb') as f:
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binary = f.read(chunksize)
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pos = 0
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while pos < len(binary):
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if b'libc' in binary or b'GLIBC' in binary:
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m = _libc_search.search(binary, pos)
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else:
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m = None
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if not m or m.end() == len(binary):
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chunk = f.read(chunksize)
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if chunk:
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binary = binary[max(pos, len(binary) - 1000):] + chunk
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pos = 0
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continue
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if not m:
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break
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libcinit, glibc, glibcversion, so, threads, soversion = [
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s.decode('latin1') if s is not None else s
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for s in m.groups()]
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if libcinit and not lib:
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lib = 'libc'
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elif glibc:
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if lib != 'glibc':
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lib = 'glibc'
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version = glibcversion
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elif V(glibcversion) > V(version):
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version = glibcversion
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elif so:
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if lib != 'glibc':
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lib = 'libc'
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if soversion and (not version or V(soversion) > V(version)):
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version = soversion
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if threads and version[-len(threads):] != threads:
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version = version + threads
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pos = m.end()
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return lib, version
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def _norm_version(version, build=''):
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""" Normalize the version and build strings and return a single
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version string using the format major.minor.build (or patchlevel).
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"""
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l = version.split('.')
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if build:
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l.append(build)
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try:
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ints = map(int, l)
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except ValueError:
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strings = l
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else:
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strings = list(map(str, ints))
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version = '.'.join(strings[:3])
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return version
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_ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) '
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r'.*'
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r'\[.* ([\d.]+)\])')
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# Examples of VER command output:
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#
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# Windows 2000: Microsoft Windows 2000 [Version 5.00.2195]
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# Windows XP: Microsoft Windows XP [Version 5.1.2600]
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# Windows Vista: Microsoft Windows [Version 6.0.6002]
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#
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# Note that the "Version" string gets localized on different
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# Windows versions.
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def _syscmd_ver(system='', release='', version='',
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supported_platforms=('win32', 'win16', 'dos')):
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""" Tries to figure out the OS version used and returns
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a tuple (system, release, version).
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It uses the "ver" shell command for this which is known
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to exists on Windows, DOS. XXX Others too ?
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In case this fails, the given parameters are used as
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defaults.
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"""
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if sys.platform not in supported_platforms:
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return system, release, version
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# Try some common cmd strings
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import subprocess
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for cmd in ('ver', 'command /c ver', 'cmd /c ver'):
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try:
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info = subprocess.check_output(cmd,
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stderr=subprocess.DEVNULL,
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text=True,
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shell=True)
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except (OSError, subprocess.CalledProcessError) as why:
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#print('Command %s failed: %s' % (cmd, why))
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continue
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else:
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break
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else:
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return system, release, version
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# Parse the output
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info = info.strip()
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m = _ver_output.match(info)
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if m is not None:
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system, release, version = m.groups()
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# Strip trailing dots from version and release
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if release[-1] == '.':
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release = release[:-1]
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if version[-1] == '.':
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version = version[:-1]
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# Normalize the version and build strings (eliminating additional
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# zeros)
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version = _norm_version(version)
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return system, release, version
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_WIN32_CLIENT_RELEASES = {
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(5, 0): "2000",
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(5, 1): "XP",
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# Strictly, 5.2 client is XP 64-bit, but platform.py historically
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# has always called it 2003 Server
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(5, 2): "2003Server",
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(5, None): "post2003",
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(6, 0): "Vista",
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(6, 1): "7",
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(6, 2): "8",
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(6, 3): "8.1",
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(6, None): "post8.1",
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(10, 0): "10",
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(10, None): "post10",
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}
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# Server release name lookup will default to client names if necessary
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_WIN32_SERVER_RELEASES = {
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(5, 2): "2003Server",
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(6, 0): "2008Server",
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(6, 1): "2008ServerR2",
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(6, 2): "2012Server",
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(6, 3): "2012ServerR2",
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(6, None): "post2012ServerR2",
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}
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def win32_is_iot():
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return win32_edition() in ('IoTUAP', 'NanoServer', 'WindowsCoreHeadless', 'IoTEdgeOS')
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def win32_edition():
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try:
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try:
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import winreg
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except ImportError:
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import _winreg as winreg
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except ImportError:
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pass
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else:
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try:
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cvkey = r'SOFTWARE\Microsoft\Windows NT\CurrentVersion'
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with winreg.OpenKeyEx(winreg.HKEY_LOCAL_MACHINE, cvkey) as key:
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return winreg.QueryValueEx(key, 'EditionId')[0]
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except OSError:
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pass
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return None
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def win32_ver(release='', version='', csd='', ptype=''):
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try:
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from sys import getwindowsversion
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except ImportError:
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return release, version, csd, ptype
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winver = getwindowsversion()
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maj, min, build = winver.platform_version or winver[:3]
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version = '{0}.{1}.{2}'.format(maj, min, build)
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release = (_WIN32_CLIENT_RELEASES.get((maj, min)) or
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_WIN32_CLIENT_RELEASES.get((maj, None)) or
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release)
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# getwindowsversion() reflect the compatibility mode Python is
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# running under, and so the service pack value is only going to be
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# valid if the versions match.
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if winver[:2] == (maj, min):
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try:
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csd = 'SP{}'.format(winver.service_pack_major)
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except AttributeError:
|
|
if csd[:13] == 'Service Pack ':
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|
csd = 'SP' + csd[13:]
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|
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# VER_NT_SERVER = 3
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if getattr(winver, 'product_type', None) == 3:
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release = (_WIN32_SERVER_RELEASES.get((maj, min)) or
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_WIN32_SERVER_RELEASES.get((maj, None)) or
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release)
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|
|
|
try:
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try:
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import winreg
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except ImportError:
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|
import _winreg as winreg
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|
except ImportError:
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pass
|
|
else:
|
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try:
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cvkey = r'SOFTWARE\Microsoft\Windows NT\CurrentVersion'
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|
with winreg.OpenKeyEx(HKEY_LOCAL_MACHINE, cvkey) as key:
|
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ptype = QueryValueEx(key, 'CurrentType')[0]
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|
except:
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pass
|
|
|
|
return release, version, csd, ptype
|
|
|
|
|
|
def _mac_ver_xml():
|
|
fn = '/System/Library/CoreServices/SystemVersion.plist'
|
|
if not os.path.exists(fn):
|
|
return None
|
|
|
|
try:
|
|
import plistlib
|
|
except ImportError:
|
|
return None
|
|
|
|
with open(fn, 'rb') as f:
|
|
pl = plistlib.load(f)
|
|
release = pl['ProductVersion']
|
|
versioninfo = ('', '', '')
|
|
machine = os.uname().machine
|
|
if machine in ('ppc', 'Power Macintosh'):
|
|
# Canonical name
|
|
machine = 'PowerPC'
|
|
|
|
return release, versioninfo, machine
|
|
|
|
|
|
def mac_ver(release='', versioninfo=('', '', ''), machine=''):
|
|
|
|
""" Get macOS version information and return it as tuple (release,
|
|
versioninfo, machine) with versioninfo being a tuple (version,
|
|
dev_stage, non_release_version).
|
|
|
|
Entries which cannot be determined are set to the parameter values
|
|
which default to ''. All tuple entries are strings.
|
|
"""
|
|
|
|
# First try reading the information from an XML file which should
|
|
# always be present
|
|
info = _mac_ver_xml()
|
|
if info is not None:
|
|
return info
|
|
|
|
# If that also doesn't work return the default values
|
|
return release, versioninfo, machine
|
|
|
|
def _java_getprop(name, default):
|
|
|
|
from java.lang import System
|
|
try:
|
|
value = System.getProperty(name)
|
|
if value is None:
|
|
return default
|
|
return value
|
|
except AttributeError:
|
|
return default
|
|
|
|
def java_ver(release='', vendor='', vminfo=('', '', ''), osinfo=('', '', '')):
|
|
|
|
""" Version interface for Jython.
|
|
|
|
Returns a tuple (release, vendor, vminfo, osinfo) with vminfo being
|
|
a tuple (vm_name, vm_release, vm_vendor) and osinfo being a
|
|
tuple (os_name, os_version, os_arch).
|
|
|
|
Values which cannot be determined are set to the defaults
|
|
given as parameters (which all default to '').
|
|
|
|
"""
|
|
# Import the needed APIs
|
|
try:
|
|
import java.lang
|
|
except ImportError:
|
|
return release, vendor, vminfo, osinfo
|
|
|
|
vendor = _java_getprop('java.vendor', vendor)
|
|
release = _java_getprop('java.version', release)
|
|
vm_name, vm_release, vm_vendor = vminfo
|
|
vm_name = _java_getprop('java.vm.name', vm_name)
|
|
vm_vendor = _java_getprop('java.vm.vendor', vm_vendor)
|
|
vm_release = _java_getprop('java.vm.version', vm_release)
|
|
vminfo = vm_name, vm_release, vm_vendor
|
|
os_name, os_version, os_arch = osinfo
|
|
os_arch = _java_getprop('java.os.arch', os_arch)
|
|
os_name = _java_getprop('java.os.name', os_name)
|
|
os_version = _java_getprop('java.os.version', os_version)
|
|
osinfo = os_name, os_version, os_arch
|
|
|
|
return release, vendor, vminfo, osinfo
|
|
|
|
### System name aliasing
|
|
|
|
def system_alias(system, release, version):
|
|
|
|
""" Returns (system, release, version) aliased to common
|
|
marketing names used for some systems.
|
|
|
|
It also does some reordering of the information in some cases
|
|
where it would otherwise cause confusion.
|
|
|
|
"""
|
|
if system == 'SunOS':
|
|
# Sun's OS
|
|
if release < '5':
|
|
# These releases use the old name SunOS
|
|
return system, release, version
|
|
# Modify release (marketing release = SunOS release - 3)
|
|
l = release.split('.')
|
|
if l:
|
|
try:
|
|
major = int(l[0])
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
major = major - 3
|
|
l[0] = str(major)
|
|
release = '.'.join(l)
|
|
if release < '6':
|
|
system = 'Solaris'
|
|
else:
|
|
# XXX Whatever the new SunOS marketing name is...
|
|
system = 'Solaris'
|
|
|
|
elif system == 'IRIX64':
|
|
# IRIX reports IRIX64 on platforms with 64-bit support; yet it
|
|
# is really a version and not a different platform, since 32-bit
|
|
# apps are also supported..
|
|
system = 'IRIX'
|
|
if version:
|
|
version = version + ' (64bit)'
|
|
else:
|
|
version = '64bit'
|
|
|
|
elif system in ('win32', 'win16'):
|
|
# In case one of the other tricks
|
|
system = 'Windows'
|
|
|
|
# bpo-35516: Don't replace Darwin with macOS since input release and
|
|
# version arguments can be different than the currently running version.
|
|
|
|
return system, release, version
|
|
|
|
### Various internal helpers
|
|
|
|
def _platform(*args):
|
|
|
|
""" Helper to format the platform string in a filename
|
|
compatible format e.g. "system-version-machine".
|
|
"""
|
|
# Format the platform string
|
|
platform = '-'.join(x.strip() for x in filter(len, args))
|
|
|
|
# Cleanup some possible filename obstacles...
|
|
platform = platform.replace(' ', '_')
|
|
platform = platform.replace('/', '-')
|
|
platform = platform.replace('\\', '-')
|
|
platform = platform.replace(':', '-')
|
|
platform = platform.replace(';', '-')
|
|
platform = platform.replace('"', '-')
|
|
platform = platform.replace('(', '-')
|
|
platform = platform.replace(')', '-')
|
|
|
|
# No need to report 'unknown' information...
|
|
platform = platform.replace('unknown', '')
|
|
|
|
# Fold '--'s and remove trailing '-'
|
|
while 1:
|
|
cleaned = platform.replace('--', '-')
|
|
if cleaned == platform:
|
|
break
|
|
platform = cleaned
|
|
while platform[-1] == '-':
|
|
platform = platform[:-1]
|
|
|
|
return platform
|
|
|
|
def _node(default=''):
|
|
|
|
""" Helper to determine the node name of this machine.
|
|
"""
|
|
try:
|
|
import socket
|
|
except ImportError:
|
|
# No sockets...
|
|
return default
|
|
try:
|
|
return socket.gethostname()
|
|
except OSError:
|
|
# Still not working...
|
|
return default
|
|
|
|
def _follow_symlinks(filepath):
|
|
|
|
""" In case filepath is a symlink, follow it until a
|
|
real file is reached.
|
|
"""
|
|
filepath = os.path.abspath(filepath)
|
|
while os.path.islink(filepath):
|
|
filepath = os.path.normpath(
|
|
os.path.join(os.path.dirname(filepath), os.readlink(filepath)))
|
|
return filepath
|
|
|
|
def _syscmd_uname(option, default=''):
|
|
|
|
""" Interface to the system's uname command.
|
|
"""
|
|
if sys.platform in ('dos', 'win32', 'win16'):
|
|
# XXX Others too ?
|
|
return default
|
|
|
|
import subprocess
|
|
try:
|
|
output = subprocess.check_output(('uname', option),
|
|
stderr=subprocess.DEVNULL,
|
|
text=True)
|
|
except (OSError, subprocess.CalledProcessError):
|
|
return default
|
|
return (output.strip() or default)
|
|
|
|
def _syscmd_file(target, default=''):
|
|
|
|
""" Interface to the system's file command.
|
|
|
|
The function uses the -b option of the file command to have it
|
|
omit the filename in its output. Follow the symlinks. It returns
|
|
default in case the command should fail.
|
|
|
|
"""
|
|
if sys.platform in ('dos', 'win32', 'win16'):
|
|
# XXX Others too ?
|
|
return default
|
|
|
|
import subprocess
|
|
target = _follow_symlinks(target)
|
|
# "file" output is locale dependent: force the usage of the C locale
|
|
# to get deterministic behavior.
|
|
env = dict(os.environ, LC_ALL='C')
|
|
try:
|
|
# -b: do not prepend filenames to output lines (brief mode)
|
|
output = subprocess.check_output(['file', '-b', target],
|
|
stderr=subprocess.DEVNULL,
|
|
env=env)
|
|
except (OSError, subprocess.CalledProcessError):
|
|
return default
|
|
if not output:
|
|
return default
|
|
# With the C locale, the output should be mostly ASCII-compatible.
|
|
# Decode from Latin-1 to prevent Unicode decode error.
|
|
return output.decode('latin-1')
|
|
|
|
### Information about the used architecture
|
|
|
|
# Default values for architecture; non-empty strings override the
|
|
# defaults given as parameters
|
|
_default_architecture = {
|
|
'win32': ('', 'WindowsPE'),
|
|
'win16': ('', 'Windows'),
|
|
'dos': ('', 'MSDOS'),
|
|
}
|
|
|
|
def architecture(executable=sys.executable, bits='', linkage=''):
|
|
|
|
""" Queries the given executable (defaults to the Python interpreter
|
|
binary) for various architecture information.
|
|
|
|
Returns a tuple (bits, linkage) which contains information about
|
|
the bit architecture and the linkage format used for the
|
|
executable. Both values are returned as strings.
|
|
|
|
Values that cannot be determined are returned as given by the
|
|
parameter presets. If bits is given as '', the sizeof(pointer)
|
|
(or sizeof(long) on Python version < 1.5.2) is used as
|
|
indicator for the supported pointer size.
|
|
|
|
The function relies on the system's "file" command to do the
|
|
actual work. This is available on most if not all Unix
|
|
platforms. On some non-Unix platforms where the "file" command
|
|
does not exist and the executable is set to the Python interpreter
|
|
binary defaults from _default_architecture are used.
|
|
|
|
"""
|
|
# Use the sizeof(pointer) as default number of bits if nothing
|
|
# else is given as default.
|
|
if not bits:
|
|
import struct
|
|
size = struct.calcsize('P')
|
|
bits = str(size * 8) + 'bit'
|
|
|
|
# Get data from the 'file' system command
|
|
if executable:
|
|
fileout = _syscmd_file(executable, '')
|
|
else:
|
|
fileout = ''
|
|
|
|
if not fileout and \
|
|
executable == sys.executable:
|
|
# "file" command did not return anything; we'll try to provide
|
|
# some sensible defaults then...
|
|
if sys.platform in _default_architecture:
|
|
b, l = _default_architecture[sys.platform]
|
|
if b:
|
|
bits = b
|
|
if l:
|
|
linkage = l
|
|
return bits, linkage
|
|
|
|
if 'executable' not in fileout and 'shared object' not in fileout:
|
|
# Format not supported
|
|
return bits, linkage
|
|
|
|
# Bits
|
|
if '32-bit' in fileout:
|
|
bits = '32bit'
|
|
elif 'N32' in fileout:
|
|
# On Irix only
|
|
bits = 'n32bit'
|
|
elif '64-bit' in fileout:
|
|
bits = '64bit'
|
|
|
|
# Linkage
|
|
if 'ELF' in fileout:
|
|
linkage = 'ELF'
|
|
elif 'PE' in fileout:
|
|
# E.g. Windows uses this format
|
|
if 'Windows' in fileout:
|
|
linkage = 'WindowsPE'
|
|
else:
|
|
linkage = 'PE'
|
|
elif 'COFF' in fileout:
|
|
linkage = 'COFF'
|
|
elif 'MS-DOS' in fileout:
|
|
linkage = 'MSDOS'
|
|
else:
|
|
# XXX the A.OUT format also falls under this class...
|
|
pass
|
|
|
|
return bits, linkage
|
|
|
|
### Portable uname() interface
|
|
|
|
uname_result = collections.namedtuple("uname_result",
|
|
"system node release version machine processor")
|
|
|
|
_uname_cache = None
|
|
|
|
def uname():
|
|
|
|
""" Fairly portable uname interface. Returns a tuple
|
|
of strings (system, node, release, version, machine, processor)
|
|
identifying the underlying platform.
|
|
|
|
Note that unlike the os.uname function this also returns
|
|
possible processor information as an additional tuple entry.
|
|
|
|
Entries which cannot be determined are set to ''.
|
|
|
|
"""
|
|
global _uname_cache
|
|
no_os_uname = 0
|
|
|
|
if _uname_cache is not None:
|
|
return _uname_cache
|
|
|
|
processor = ''
|
|
|
|
# Get some infos from the builtin os.uname API...
|
|
try:
|
|
system, node, release, version, machine = os.uname()
|
|
except AttributeError:
|
|
no_os_uname = 1
|
|
|
|
if no_os_uname or not list(filter(None, (system, node, release, version, machine))):
|
|
# Hmm, no there is either no uname or uname has returned
|
|
#'unknowns'... we'll have to poke around the system then.
|
|
if no_os_uname:
|
|
system = sys.platform
|
|
release = ''
|
|
version = ''
|
|
node = _node()
|
|
machine = ''
|
|
|
|
use_syscmd_ver = 1
|
|
|
|
# Try win32_ver() on win32 platforms
|
|
if system == 'win32':
|
|
release, version, csd, ptype = win32_ver()
|
|
if release and version:
|
|
use_syscmd_ver = 0
|
|
# Try to use the PROCESSOR_* environment variables
|
|
# available on Win XP and later; see
|
|
# http://support.microsoft.com/kb/888731 and
|
|
# http://www.geocities.com/rick_lively/MANUALS/ENV/MSWIN/PROCESSI.HTM
|
|
if not machine:
|
|
# WOW64 processes mask the native architecture
|
|
if "PROCESSOR_ARCHITEW6432" in os.environ:
|
|
machine = os.environ.get("PROCESSOR_ARCHITEW6432", '')
|
|
else:
|
|
machine = os.environ.get('PROCESSOR_ARCHITECTURE', '')
|
|
if not processor:
|
|
processor = os.environ.get('PROCESSOR_IDENTIFIER', machine)
|
|
|
|
# Try the 'ver' system command available on some
|
|
# platforms
|
|
if use_syscmd_ver:
|
|
system, release, version = _syscmd_ver(system)
|
|
# Normalize system to what win32_ver() normally returns
|
|
# (_syscmd_ver() tends to return the vendor name as well)
|
|
if system == 'Microsoft Windows':
|
|
system = 'Windows'
|
|
elif system == 'Microsoft' and release == 'Windows':
|
|
# Under Windows Vista and Windows Server 2008,
|
|
# Microsoft changed the output of the ver command. The
|
|
# release is no longer printed. This causes the
|
|
# system and release to be misidentified.
|
|
system = 'Windows'
|
|
if '6.0' == version[:3]:
|
|
release = 'Vista'
|
|
else:
|
|
release = ''
|
|
|
|
# In case we still don't know anything useful, we'll try to
|
|
# help ourselves
|
|
if system in ('win32', 'win16'):
|
|
if not version:
|
|
if system == 'win32':
|
|
version = '32bit'
|
|
else:
|
|
version = '16bit'
|
|
system = 'Windows'
|
|
|
|
elif system[:4] == 'java':
|
|
release, vendor, vminfo, osinfo = java_ver()
|
|
system = 'Java'
|
|
version = ', '.join(vminfo)
|
|
if not version:
|
|
version = vendor
|
|
|
|
# System specific extensions
|
|
if system == 'OpenVMS':
|
|
# OpenVMS seems to have release and version mixed up
|
|
if not release or release == '0':
|
|
release = version
|
|
version = ''
|
|
# Get processor information
|
|
try:
|
|
import vms_lib
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
csid, cpu_number = vms_lib.getsyi('SYI$_CPU', 0)
|
|
if (cpu_number >= 128):
|
|
processor = 'Alpha'
|
|
else:
|
|
processor = 'VAX'
|
|
if not processor:
|
|
# Get processor information from the uname system command
|
|
processor = _syscmd_uname('-p', '')
|
|
|
|
#If any unknowns still exist, replace them with ''s, which are more portable
|
|
if system == 'unknown':
|
|
system = ''
|
|
if node == 'unknown':
|
|
node = ''
|
|
if release == 'unknown':
|
|
release = ''
|
|
if version == 'unknown':
|
|
version = ''
|
|
if machine == 'unknown':
|
|
machine = ''
|
|
if processor == 'unknown':
|
|
processor = ''
|
|
|
|
# normalize name
|
|
if system == 'Microsoft' and release == 'Windows':
|
|
system = 'Windows'
|
|
release = 'Vista'
|
|
|
|
_uname_cache = uname_result(system, node, release, version,
|
|
machine, processor)
|
|
return _uname_cache
|
|
|
|
### Direct interfaces to some of the uname() return values
|
|
|
|
def system():
|
|
|
|
""" Returns the system/OS name, e.g. 'Linux', 'Windows' or 'Java'.
|
|
|
|
An empty string is returned if the value cannot be determined.
|
|
|
|
"""
|
|
return uname().system
|
|
|
|
def node():
|
|
|
|
""" Returns the computer's network name (which may not be fully
|
|
qualified)
|
|
|
|
An empty string is returned if the value cannot be determined.
|
|
|
|
"""
|
|
return uname().node
|
|
|
|
def release():
|
|
|
|
""" Returns the system's release, e.g. '2.2.0' or 'NT'
|
|
|
|
An empty string is returned if the value cannot be determined.
|
|
|
|
"""
|
|
return uname().release
|
|
|
|
def version():
|
|
|
|
""" Returns the system's release version, e.g. '#3 on degas'
|
|
|
|
An empty string is returned if the value cannot be determined.
|
|
|
|
"""
|
|
return uname().version
|
|
|
|
def machine():
|
|
|
|
""" Returns the machine type, e.g. 'i386'
|
|
|
|
An empty string is returned if the value cannot be determined.
|
|
|
|
"""
|
|
return uname().machine
|
|
|
|
def processor():
|
|
|
|
""" Returns the (true) processor name, e.g. 'amdk6'
|
|
|
|
An empty string is returned if the value cannot be
|
|
determined. Note that many platforms do not provide this
|
|
information or simply return the same value as for machine(),
|
|
e.g. NetBSD does this.
|
|
|
|
"""
|
|
return uname().processor
|
|
|
|
### Various APIs for extracting information from sys.version
|
|
|
|
_sys_version_parser = re.compile(
|
|
r'([\w.+]+)\s*' # "version<space>"
|
|
r'\(#?([^,]+)' # "(#buildno"
|
|
r'(?:,\s*([\w ]*)' # ", builddate"
|
|
r'(?:,\s*([\w :]*))?)?\)\s*' # ", buildtime)<space>"
|
|
r'\[([^\]]+)\]?', re.ASCII) # "[compiler]"
|
|
|
|
_ironpython_sys_version_parser = re.compile(
|
|
r'IronPython\s*'
|
|
r'([\d\.]+)'
|
|
r'(?: \(([\d\.]+)\))?'
|
|
r' on (.NET [\d\.]+)', re.ASCII)
|
|
|
|
# IronPython covering 2.6 and 2.7
|
|
_ironpython26_sys_version_parser = re.compile(
|
|
r'([\d.]+)\s*'
|
|
r'\(IronPython\s*'
|
|
r'[\d.]+\s*'
|
|
r'\(([\d.]+)\) on ([\w.]+ [\d.]+(?: \(\d+-bit\))?)\)'
|
|
)
|
|
|
|
_pypy_sys_version_parser = re.compile(
|
|
r'([\w.+]+)\s*'
|
|
r'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
|
|
r'\[PyPy [^\]]+\]?')
|
|
|
|
_sys_version_cache = {}
|
|
|
|
def _sys_version(sys_version=None):
|
|
|
|
""" Returns a parsed version of Python's sys.version as tuple
|
|
(name, version, branch, revision, buildno, builddate, compiler)
|
|
referring to the Python implementation name, version, branch,
|
|
revision, build number, build date/time as string and the compiler
|
|
identification string.
|
|
|
|
Note that unlike the Python sys.version, the returned value
|
|
for the Python version will always include the patchlevel (it
|
|
defaults to '.0').
|
|
|
|
The function returns empty strings for tuple entries that
|
|
cannot be determined.
|
|
|
|
sys_version may be given to parse an alternative version
|
|
string, e.g. if the version was read from a different Python
|
|
interpreter.
|
|
|
|
"""
|
|
# Get the Python version
|
|
if sys_version is None:
|
|
sys_version = sys.version
|
|
|
|
# Try the cache first
|
|
result = _sys_version_cache.get(sys_version, None)
|
|
if result is not None:
|
|
return result
|
|
|
|
# Parse it
|
|
if 'IronPython' in sys_version:
|
|
# IronPython
|
|
name = 'IronPython'
|
|
if sys_version.startswith('IronPython'):
|
|
match = _ironpython_sys_version_parser.match(sys_version)
|
|
else:
|
|
match = _ironpython26_sys_version_parser.match(sys_version)
|
|
|
|
if match is None:
|
|
raise ValueError(
|
|
'failed to parse IronPython sys.version: %s' %
|
|
repr(sys_version))
|
|
|
|
version, alt_version, compiler = match.groups()
|
|
buildno = ''
|
|
builddate = ''
|
|
|
|
elif sys.platform.startswith('java'):
|
|
# Jython
|
|
name = 'Jython'
|
|
match = _sys_version_parser.match(sys_version)
|
|
if match is None:
|
|
raise ValueError(
|
|
'failed to parse Jython sys.version: %s' %
|
|
repr(sys_version))
|
|
version, buildno, builddate, buildtime, _ = match.groups()
|
|
if builddate is None:
|
|
builddate = ''
|
|
compiler = sys.platform
|
|
|
|
elif "PyPy" in sys_version:
|
|
# PyPy
|
|
name = "PyPy"
|
|
match = _pypy_sys_version_parser.match(sys_version)
|
|
if match is None:
|
|
raise ValueError("failed to parse PyPy sys.version: %s" %
|
|
repr(sys_version))
|
|
version, buildno, builddate, buildtime = match.groups()
|
|
compiler = ""
|
|
|
|
else:
|
|
# CPython
|
|
match = _sys_version_parser.match(sys_version)
|
|
if match is None:
|
|
raise ValueError(
|
|
'failed to parse CPython sys.version: %s' %
|
|
repr(sys_version))
|
|
version, buildno, builddate, buildtime, compiler = \
|
|
match.groups()
|
|
name = 'CPython'
|
|
if builddate is None:
|
|
builddate = ''
|
|
elif buildtime:
|
|
builddate = builddate + ' ' + buildtime
|
|
|
|
if hasattr(sys, '_git'):
|
|
_, branch, revision = sys._git
|
|
elif hasattr(sys, '_mercurial'):
|
|
_, branch, revision = sys._mercurial
|
|
else:
|
|
branch = ''
|
|
revision = ''
|
|
|
|
# Add the patchlevel version if missing
|
|
l = version.split('.')
|
|
if len(l) == 2:
|
|
l.append('0')
|
|
version = '.'.join(l)
|
|
|
|
# Build and cache the result
|
|
result = (name, version, branch, revision, buildno, builddate, compiler)
|
|
_sys_version_cache[sys_version] = result
|
|
return result
|
|
|
|
def python_implementation():
|
|
|
|
""" Returns a string identifying the Python implementation.
|
|
|
|
Currently, the following implementations are identified:
|
|
'CPython' (C implementation of Python),
|
|
'IronPython' (.NET implementation of Python),
|
|
'Jython' (Java implementation of Python),
|
|
'PyPy' (Python implementation of Python).
|
|
|
|
"""
|
|
return _sys_version()[0]
|
|
|
|
def python_version():
|
|
|
|
""" Returns the Python version as string 'major.minor.patchlevel'
|
|
|
|
Note that unlike the Python sys.version, the returned value
|
|
will always include the patchlevel (it defaults to 0).
|
|
|
|
"""
|
|
return _sys_version()[1]
|
|
|
|
def python_version_tuple():
|
|
|
|
""" Returns the Python version as tuple (major, minor, patchlevel)
|
|
of strings.
|
|
|
|
Note that unlike the Python sys.version, the returned value
|
|
will always include the patchlevel (it defaults to 0).
|
|
|
|
"""
|
|
return tuple(_sys_version()[1].split('.'))
|
|
|
|
def python_branch():
|
|
|
|
""" Returns a string identifying the Python implementation
|
|
branch.
|
|
|
|
For CPython this is the SCM branch from which the
|
|
Python binary was built.
|
|
|
|
If not available, an empty string is returned.
|
|
|
|
"""
|
|
|
|
return _sys_version()[2]
|
|
|
|
def python_revision():
|
|
|
|
""" Returns a string identifying the Python implementation
|
|
revision.
|
|
|
|
For CPython this is the SCM revision from which the
|
|
Python binary was built.
|
|
|
|
If not available, an empty string is returned.
|
|
|
|
"""
|
|
return _sys_version()[3]
|
|
|
|
def python_build():
|
|
|
|
""" Returns a tuple (buildno, builddate) stating the Python
|
|
build number and date as strings.
|
|
|
|
"""
|
|
return _sys_version()[4:6]
|
|
|
|
def python_compiler():
|
|
|
|
""" Returns a string identifying the compiler used for compiling
|
|
Python.
|
|
|
|
"""
|
|
return _sys_version()[6]
|
|
|
|
### The Opus Magnum of platform strings :-)
|
|
|
|
_platform_cache = {}
|
|
|
|
def platform(aliased=0, terse=0):
|
|
|
|
""" Returns a single string identifying the underlying platform
|
|
with as much useful information as possible (but no more :).
|
|
|
|
The output is intended to be human readable rather than
|
|
machine parseable. It may look different on different
|
|
platforms and this is intended.
|
|
|
|
If "aliased" is true, the function will use aliases for
|
|
various platforms that report system names which differ from
|
|
their common names, e.g. SunOS will be reported as
|
|
Solaris. The system_alias() function is used to implement
|
|
this.
|
|
|
|
Setting terse to true causes the function to return only the
|
|
absolute minimum information needed to identify the platform.
|
|
|
|
"""
|
|
result = _platform_cache.get((aliased, terse), None)
|
|
if result is not None:
|
|
return result
|
|
|
|
# Get uname information and then apply platform specific cosmetics
|
|
# to it...
|
|
system, node, release, version, machine, processor = uname()
|
|
if machine == processor:
|
|
processor = ''
|
|
if aliased:
|
|
system, release, version = system_alias(system, release, version)
|
|
|
|
if system == 'Darwin':
|
|
# macOS (darwin kernel)
|
|
macos_release = mac_ver()[0]
|
|
if macos_release:
|
|
system = 'macOS'
|
|
release = macos_release
|
|
|
|
if system == 'Windows':
|
|
# MS platforms
|
|
rel, vers, csd, ptype = win32_ver(version)
|
|
if terse:
|
|
platform = _platform(system, release)
|
|
else:
|
|
platform = _platform(system, release, version, csd)
|
|
|
|
elif system in ('Linux',):
|
|
# check for libc vs. glibc
|
|
libcname, libcversion = libc_ver()
|
|
platform = _platform(system, release, machine, processor,
|
|
'with',
|
|
libcname+libcversion)
|
|
elif system == 'Java':
|
|
# Java platforms
|
|
r, v, vminfo, (os_name, os_version, os_arch) = java_ver()
|
|
if terse or not os_name:
|
|
platform = _platform(system, release, version)
|
|
else:
|
|
platform = _platform(system, release, version,
|
|
'on',
|
|
os_name, os_version, os_arch)
|
|
|
|
else:
|
|
# Generic handler
|
|
if terse:
|
|
platform = _platform(system, release)
|
|
else:
|
|
bits, linkage = architecture(sys.executable)
|
|
platform = _platform(system, release, machine,
|
|
processor, bits, linkage)
|
|
|
|
_platform_cache[(aliased, terse)] = platform
|
|
return platform
|
|
|
|
### Command line interface
|
|
|
|
if __name__ == '__main__':
|
|
# Default is to print the aliased verbose platform string
|
|
terse = ('terse' in sys.argv or '--terse' in sys.argv)
|
|
aliased = (not 'nonaliased' in sys.argv and not '--nonaliased' in sys.argv)
|
|
print(platform(aliased, terse))
|
|
sys.exit(0)
|