#!/usr/bin/env python

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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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# Note: Please keep this module compatible to Python 1.5.2.

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#

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# Still needed:

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# * more support for WinCE

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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 emtpy)

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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 invokation 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__ = '1.0.7'

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import sys,string,os,re

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### Globals & Constants

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# Determine the platform's /dev/null device

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try:

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DEV_NULL = os.devnull

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except AttributeError:

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# os.devnull was added in Python 2.4, so emulate it for earlier

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# Python versions

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if sys.platform in ('dos','win32','win16','os2'):

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# Use the old CP/M NUL as device name

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DEV_NULL = 'NUL'

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else:

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# Standard Unix uses /dev/null

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DEV_NULL = '/dev/null'

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### Platform specific APIs

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_libc_search = re.compile(r'(__libc_init)'

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'|'

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'(GLIBC_([0-9.]+))'

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'|'

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'(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)')

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def libc_ver(executable=sys.executable,lib='',version='',

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chunksize=2048):

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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 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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f = open(executable,'rb')

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binary = f.read(chunksize)

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pos = 0

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while 1:

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m = _libc_search.search(binary,pos)

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if not m:

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binary = f.read(chunksize)

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if not binary:

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break

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pos = 0

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continue

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libcinit,glibc,glibcversion,so,threads,soversion = 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 glibcversion > 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 soversion > 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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f.close()

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return lib,version

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def _dist_try_harder(distname,version,id):

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""" Tries some special tricks to get the distribution

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information in case the default method fails.

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Currently supports older SuSE Linux, Caldera OpenLinux and

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Slackware Linux distributions.

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"""

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if os.path.exists('/var/adm/inst-log/info'):

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# SuSE Linux stores distribution information in that file

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info = open('/var/adm/inst-log/info').readlines()

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distname = 'SuSE'

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for line in info:

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tv = string.split(line)

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if len(tv) == 2:

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tag,value = tv

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else:

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continue

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if tag == 'MIN_DIST_VERSION':

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version = string.strip(value)

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elif tag == 'DIST_IDENT':

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values = string.split(value,'-')

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id = values[2]

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return distname,version,id

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if os.path.exists('/etc/.installed'):

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# Caldera OpenLinux has some infos in that file (thanks to Colin Kong)

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info = open('/etc/.installed').readlines()

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for line in info:

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pkg = string.split(line,'-')

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if len(pkg) >= 2 and pkg[0] == 'OpenLinux':

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# XXX does Caldera support non Intel platforms ? If yes,

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# where can we find the needed id ?

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return 'OpenLinux',pkg[1],id

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if os.path.isdir('/usr/lib/setup'):

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# Check for slackware version tag file (thanks to Greg Andruk)

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verfiles = os.listdir('/usr/lib/setup')

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for n in range(len(verfiles)-1, -1, -1):

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if verfiles[n][:14] != 'slack-version-':

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del verfiles[n]

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if verfiles:

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verfiles.sort()

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distname = 'slackware'

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version = verfiles[-1][14:]

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return distname,version,id

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return distname,version,id

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_release_filename = re.compile(r'(\w+)[-_](release|version)')

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_lsb_release_version = re.compile(r'(.+)'

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' release '

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'([\d.]+)'

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'[^(]*(?:\((.+)\))?')

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_release_version = re.compile(r'([^0-9]+)'

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'(?: release )?'

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'([\d.]+)'

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'[^(]*(?:\((.+)\))?')

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# See also http://www.novell.com/coolsolutions/feature/11251.html

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# and http://linuxmafia.com/faq/Admin/release-files.html

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# and http://data.linux-ntfs.org/rpm/whichrpm

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# and http://www.die.net/doc/linux/man/man1/lsb_release.1.html

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_supported_dists = (

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'SuSE', 'debian', 'fedora', 'redhat', 'centos',

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'mandrake', 'mandriva', 'rocks', 'slackware', 'yellowdog', 'gentoo',

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'UnitedLinux', 'turbolinux')

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def _parse_release_file(firstline):

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# Default to empty 'version' and 'id' strings. Both defaults are used

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# when 'firstline' is empty. 'id' defaults to empty when an id can not

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# be deduced.

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version = ''

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id = ''

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# Parse the first line

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m = _lsb_release_version.match(firstline)

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if m is not None:

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# LSB format: "distro release x.x (codename)"

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return tuple(m.groups())

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# Pre-LSB format: "distro x.x (codename)"

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m = _release_version.match(firstline)

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if m is not None:

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return tuple(m.groups())

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# Unknown format... take the first two words

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l = string.split(string.strip(firstline))

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if l:

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version = l[0]

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if len(l) > 1:

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id = l[1]

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return '', version, id

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def linux_distribution(distname='', version='', id='',

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supported_dists=_supported_dists,

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full_distribution_name=1):

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""" Tries to determine the name of the Linux OS distribution name.

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The function first looks for a distribution release file in

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/etc and then reverts to _dist_try_harder() in case no

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suitable files are found.

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supported_dists may be given to define the set of Linux

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distributions to look for. It defaults to a list of currently

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supported Linux distributions identified by their release file

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name.

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If full_distribution_name is true (default), the full

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distribution read from the OS is returned. Otherwise the short

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name taken from supported_dists is used.

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Returns a tuple (distname,version,id) which default to the

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args given as parameters.

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"""

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try:

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etc = os.listdir('/etc')

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except os.error:

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# Probably not a Unix system

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return distname,version,id

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etc.sort()

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for file in etc:

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m = _release_filename.match(file)

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if m is not None:

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_distname,dummy = m.groups()

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if _distname in supported_dists:

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distname = _distname

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break

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else:

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return _dist_try_harder(distname,version,id)

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# Read the first line

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f = open('/etc/'+file, 'r')

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firstline = f.readline()

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f.close()

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_distname, _version, _id = _parse_release_file(firstline)

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if _distname and full_distribution_name:

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distname = _distname

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if _version:

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version = _version

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if _id:

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id = _id

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return distname, version, id

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# To maintain backwards compatibility:

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def dist(distname='',version='',id='',

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[349] Fix | Delete

supported_dists=_supported_dists):

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""" Tries to determine the name of the Linux OS distribution name.

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The function first looks for a distribution release file in

[354] Fix | Delete

/etc and then reverts to _dist_try_harder() in case no

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suitable files are found.

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Returns a tuple (distname,version,id) which default to the

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args given as parameters.

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"""

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return linux_distribution(distname, version, id,

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supported_dists=supported_dists,

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full_distribution_name=0)

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class _popen:

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""" Fairly portable (alternative) popen implementation.

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This is mostly needed in case os.popen() is not available, or

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doesn't work as advertised, e.g. in Win9X GUI programs like

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PythonWin or IDLE.

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Writing to the pipe is currently not supported.

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"""

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tmpfile = ''

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pipe = None

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bufsize = None

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mode = 'r'

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def __init__(self,cmd,mode='r',bufsize=None):

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[383] Fix | Delete

if mode != 'r':

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raise ValueError,'popen()-emulation only supports read mode'

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import tempfile

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self.tmpfile = tmpfile = tempfile.mktemp()

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os.system(cmd + ' > %s' % tmpfile)

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self.pipe = open(tmpfile,'rb')

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self.bufsize = bufsize

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self.mode = mode

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def read(self):

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return self.pipe.read()

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def readlines(self):

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if self.bufsize is not None:

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return self.pipe.readlines()

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def close(self,

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remove=os.unlink,error=os.error):

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if self.pipe:

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rc = self.pipe.close()

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else:

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rc = 255

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if self.tmpfile:

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try:

[411] Fix | Delete

remove(self.tmpfile)

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except error:

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pass

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return rc

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# Alias

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__del__ = close

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def popen(cmd, mode='r', bufsize=None):

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[421] Fix | Delete

""" Portable popen() interface.

[422] Fix | Delete

"""

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# Find a working popen implementation preferring win32pipe.popen

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# over os.popen over _popen

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popen = None

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if os.environ.get('OS','') == 'Windows_NT':

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# On NT win32pipe should work; on Win9x it hangs due to bugs

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# in the MS C lib (see MS KnowledgeBase article Q150956)

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try:

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import win32pipe

[431] Fix | Delete

except ImportError:

[432] Fix | Delete

pass

[433] Fix | Delete

else:

[434] Fix | Delete

popen = win32pipe.popen

[435] Fix | Delete

if popen is None:

[436] Fix | Delete

if hasattr(os,'popen'):

[437] Fix | Delete

popen = os.popen

[438] Fix | Delete

# Check whether it works... it doesn't in GUI programs

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# on Windows platforms

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if sys.platform == 'win32': # XXX Others too ?

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try:

[442] Fix | Delete

popen('')

[443] Fix | Delete

except os.error:

[444] Fix | Delete

popen = _popen

[445] Fix | Delete

else:

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popen = _popen

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if bufsize is None:

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return popen(cmd,mode)

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else:

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return popen(cmd,mode,bufsize)

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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 = string.split(version,'.')

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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 = map(str,ints)

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version = string.join(strings[:3],'.')

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return version

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_ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) '

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'.*'

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'\[.* ([\d.]+)\])')

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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','os2')):

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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 and OS/2. 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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