#!/usr/bin/env python | |
""" This module tries to retrieve as much platform-identifying data as | |
possible. It makes this information available via function APIs. | |
If called from the command line, it prints the platform | |
information concatenated as single string to stdout. The output | |
format is useable as part of a filename. | |
""" | |
# This module is maintained by Marc-Andre Lemburg <mal@egenix.com>. | |
# If you find problems, please submit bug reports/patches via the | |
# Python bug tracker (http://bugs.python.org) and assign them to "lemburg". | |
# | |
# Note: Please keep this module compatible to Python 1.5.2. | |
# | |
# Still needed: | |
# * more support for WinCE | |
# * support for MS-DOS (PythonDX ?) | |
# * support for Amiga and other still unsupported platforms running Python | |
# * support for additional Linux distributions | |
# | |
# Many thanks to all those who helped adding platform-specific | |
# checks (in no particular order): | |
# | |
# Charles G Waldman, David Arnold, Gordon McMillan, Ben Darnell, | |
# Jeff Bauer, Cliff Crawford, Ivan Van Laningham, Josef | |
# Betancourt, Randall Hopper, Karl Putland, John Farrell, Greg | |
# Andruk, Just van Rossum, Thomas Heller, Mark R. Levinson, Mark | |
# Hammond, Bill Tutt, Hans Nowak, Uwe Zessin (OpenVMS support), | |
# Colin Kong, Trent Mick, Guido van Rossum, Anthony Baxter | |
# | |
# History: | |
# | |
# <see CVS and SVN checkin messages for history> | |
# | |
# 1.0.7 - added DEV_NULL | |
# 1.0.6 - added linux_distribution() | |
# 1.0.5 - fixed Java support to allow running the module on Jython | |
# 1.0.4 - added IronPython support | |
# 1.0.3 - added normalization of Windows system name | |
# 1.0.2 - added more Windows support | |
# 1.0.1 - reformatted to make doc.py happy | |
# 1.0.0 - reformatted a bit and checked into Python CVS | |
# 0.8.0 - added sys.version parser and various new access | |
# APIs (python_version(), python_compiler(), etc.) | |
# 0.7.2 - fixed architecture() to use sizeof(pointer) where available | |
# 0.7.1 - added support for Caldera OpenLinux | |
# 0.7.0 - some fixes for WinCE; untabified the source file | |
# 0.6.2 - support for OpenVMS - requires version 1.5.2-V006 or higher and | |
# vms_lib.getsyi() configured | |
# 0.6.1 - added code to prevent 'uname -p' on platforms which are | |
# known not to support it | |
# 0.6.0 - fixed win32_ver() to hopefully work on Win95,98,NT and Win2k; | |
# did some cleanup of the interfaces - some APIs have changed | |
# 0.5.5 - fixed another type in the MacOS code... should have | |
# used more coffee today ;-) | |
# 0.5.4 - fixed a few typos in the MacOS code | |
# 0.5.3 - added experimental MacOS support; added better popen() | |
# workarounds in _syscmd_ver() -- still not 100% elegant | |
# though | |
# 0.5.2 - fixed uname() to return '' instead of 'unknown' in all | |
# return values (the system uname command tends to return | |
# 'unknown' instead of just leaving the field emtpy) | |
# 0.5.1 - included code for slackware dist; added exception handlers | |
# to cover up situations where platforms don't have os.popen | |
# (e.g. Mac) or fail on socket.gethostname(); fixed libc | |
# detection RE | |
# 0.5.0 - changed the API names referring to system commands to *syscmd*; | |
# added java_ver(); made syscmd_ver() a private | |
# API (was system_ver() in previous versions) -- use uname() | |
# instead; extended the win32_ver() to also return processor | |
# type information | |
# 0.4.0 - added win32_ver() and modified the platform() output for WinXX | |
# 0.3.4 - fixed a bug in _follow_symlinks() | |
# 0.3.3 - fixed popen() and "file" command invokation bugs | |
# 0.3.2 - added architecture() API and support for it in platform() | |
# 0.3.1 - fixed syscmd_ver() RE to support Windows NT | |
# 0.3.0 - added system alias support | |
# 0.2.3 - removed 'wince' again... oh well. | |
# 0.2.2 - added 'wince' to syscmd_ver() supported platforms | |
# 0.2.1 - added cache logic and changed the platform string format | |
# 0.2.0 - changed the API to use functions instead of module globals | |
# since some action take too long to be run on module import | |
# 0.1.0 - first release | |
# | |
# You can always get the latest version of this module at: | |
# | |
# http://www.egenix.com/files/python/platform.py | |
# | |
# If that URL should fail, try contacting the author. | |
__copyright__ = """ | |
Copyright (c) 1999-2000, Marc-Andre Lemburg; mailto:mal@lemburg.com | |
Copyright (c) 2000-2010, eGenix.com Software GmbH; mailto:info@egenix.com | |
Permission to use, copy, modify, and distribute this software and its | |
documentation for any purpose and without fee or royalty is hereby granted, | |
provided that the above copyright notice appear in all copies and that | |
both that copyright notice and this permission notice appear in | |
supporting documentation or portions thereof, including modifications, | |
that you make. | |
EGENIX.COM SOFTWARE GMBH DISCLAIMS ALL WARRANTIES WITH REGARD TO | |
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, | |
INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING | |
FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, | |
NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION | |
WITH THE USE OR PERFORMANCE OF THIS SOFTWARE ! | |
""" | |
__version__ = '1.0.7' | |
import sys,string,os,re | |
### Globals & Constants | |
# Determine the platform's /dev/null device | |
try: | |
DEV_NULL = os.devnull | |
except AttributeError: | |
# os.devnull was added in Python 2.4, so emulate it for earlier | |
# Python versions | |
if sys.platform in ('dos','win32','win16','os2'): | |
# Use the old CP/M NUL as device name | |
DEV_NULL = 'NUL' | |
else: | |
# Standard Unix uses /dev/null | |
DEV_NULL = '/dev/null' | |
### Platform specific APIs | |
_libc_search = re.compile(r'(__libc_init)' | |
'|' | |
'(GLIBC_([0-9.]+))' | |
'|' | |
'(libc(_\w+)?\.so(?:\.(\d[0-9.]*))?)') | |
def libc_ver(executable=sys.executable,lib='',version='', | |
chunksize=2048): | |
""" Tries to determine the libc version that the file executable | |
(which defaults to the Python interpreter) is linked against. | |
Returns a tuple of strings (lib,version) which default to the | |
given parameters in case the lookup fails. | |
Note that the function has intimate knowledge of how different | |
libc versions add symbols to the executable and thus is probably | |
only useable for executables compiled using gcc. | |
The file is read and scanned in chunks of chunksize bytes. | |
""" | |
if hasattr(os.path, 'realpath'): | |
# Python 2.2 introduced os.path.realpath(); it is used | |
# here to work around problems with Cygwin not being | |
# able to open symlinks for reading | |
executable = os.path.realpath(executable) | |
f = open(executable,'rb') | |
binary = f.read(chunksize) | |
pos = 0 | |
while 1: | |
m = _libc_search.search(binary,pos) | |
if not m: | |
binary = f.read(chunksize) | |
if not binary: | |
break | |
pos = 0 | |
continue | |
libcinit,glibc,glibcversion,so,threads,soversion = m.groups() | |
if libcinit and not lib: | |
lib = 'libc' | |
elif glibc: | |
if lib != 'glibc': | |
lib = 'glibc' | |
version = glibcversion | |
elif glibcversion > version: | |
version = glibcversion | |
elif so: | |
if lib != 'glibc': | |
lib = 'libc' | |
if soversion > version: | |
version = soversion | |
if threads and version[-len(threads):] != threads: | |
version = version + threads | |
pos = m.end() | |
f.close() | |
return lib,version | |
def _dist_try_harder(distname,version,id): | |
""" Tries some special tricks to get the distribution | |
information in case the default method fails. | |
Currently supports older SuSE Linux, Caldera OpenLinux and | |
Slackware Linux distributions. | |
""" | |
if os.path.exists('/var/adm/inst-log/info'): | |
# SuSE Linux stores distribution information in that file | |
info = open('/var/adm/inst-log/info').readlines() | |
distname = 'SuSE' | |
for line in info: | |
tv = string.split(line) | |
if len(tv) == 2: | |
tag,value = tv | |
else: | |
continue | |
if tag == 'MIN_DIST_VERSION': | |
version = string.strip(value) | |
elif tag == 'DIST_IDENT': | |
values = string.split(value,'-') | |
id = values[2] | |
return distname,version,id | |
if os.path.exists('/etc/.installed'): | |
# Caldera OpenLinux has some infos in that file (thanks to Colin Kong) | |
info = open('/etc/.installed').readlines() | |
for line in info: | |
pkg = string.split(line,'-') | |
if len(pkg) >= 2 and pkg[0] == 'OpenLinux': | |
# XXX does Caldera support non Intel platforms ? If yes, | |
# where can we find the needed id ? | |
return 'OpenLinux',pkg[1],id | |
if os.path.isdir('/usr/lib/setup'): | |
# Check for slackware verson tag file (thanks to Greg Andruk) | |
verfiles = os.listdir('/usr/lib/setup') | |
for n in range(len(verfiles)-1, -1, -1): | |
if verfiles[n][:14] != 'slack-version-': | |
del verfiles[n] | |
if verfiles: | |
verfiles.sort() | |
distname = 'slackware' | |
version = verfiles[-1][14:] | |
return distname,version,id | |
return distname,version,id | |
_release_filename = re.compile(r'(\w+)[-_](release|version)') | |
_lsb_release_version = re.compile(r'(.+)' | |
' release ' | |
'([\d.]+)' | |
'[^(]*(?:\((.+)\))?') | |
_release_version = re.compile(r'([^0-9]+)' | |
'(?: release )?' | |
'([\d.]+)' | |
'[^(]*(?:\((.+)\))?') | |
# See also http://www.novell.com/coolsolutions/feature/11251.html | |
# and http://linuxmafia.com/faq/Admin/release-files.html | |
# and http://data.linux-ntfs.org/rpm/whichrpm | |
# and http://www.die.net/doc/linux/man/man1/lsb_release.1.html | |
_supported_dists = ( | |
'SuSE', 'debian', 'fedora', 'redhat', 'centos', | |
'mandrake', 'mandriva', 'rocks', 'slackware', 'yellowdog', 'gentoo', | |
'UnitedLinux', 'turbolinux') | |
def _parse_release_file(firstline): | |
# Default to empty 'version' and 'id' strings. Both defaults are used | |
# when 'firstline' is empty. 'id' defaults to empty when an id can not | |
# be deduced. | |
version = '' | |
id = '' | |
# Parse the first line | |
m = _lsb_release_version.match(firstline) | |
if m is not None: | |
# LSB format: "distro release x.x (codename)" | |
return tuple(m.groups()) | |
# Pre-LSB format: "distro x.x (codename)" | |
m = _release_version.match(firstline) | |
if m is not None: | |
return tuple(m.groups()) | |
# Unkown format... take the first two words | |
l = string.split(string.strip(firstline)) | |
if l: | |
version = l[0] | |
if len(l) > 1: | |
id = l[1] | |
return '', version, id | |
def linux_distribution(distname='', version='', id='', | |
supported_dists=_supported_dists, | |
full_distribution_name=1): | |
""" Tries to determine the name of the Linux OS distribution name. | |
The function first looks for a distribution release file in | |
/etc and then reverts to _dist_try_harder() in case no | |
suitable files are found. | |
supported_dists may be given to define the set of Linux | |
distributions to look for. It defaults to a list of currently | |
supported Linux distributions identified by their release file | |
name. | |
If full_distribution_name is true (default), the full | |
distribution read from the OS is returned. Otherwise the short | |
name taken from supported_dists is used. | |
Returns a tuple (distname,version,id) which default to the | |
args given as parameters. | |
""" | |
try: | |
etc = os.listdir('/etc') | |
except os.error: | |
# Probably not a Unix system | |
return distname,version,id | |
etc.sort() | |
for file in etc: | |
m = _release_filename.match(file) | |
if m is not None: | |
_distname,dummy = m.groups() | |
if _distname in supported_dists: | |
distname = _distname | |
break | |
else: | |
return _dist_try_harder(distname,version,id) | |
# Read the first line | |
f = open('/etc/'+file, 'r') | |
firstline = f.readline() | |
f.close() | |
_distname, _version, _id = _parse_release_file(firstline) | |
if _distname and full_distribution_name: | |
distname = _distname | |
if _version: | |
version = _version | |
if _id: | |
id = _id | |
return distname, version, id | |
# To maintain backwards compatibility: | |
def dist(distname='',version='',id='', | |
supported_dists=_supported_dists): | |
""" Tries to determine the name of the Linux OS distribution name. | |
The function first looks for a distribution release file in | |
/etc and then reverts to _dist_try_harder() in case no | |
suitable files are found. | |
Returns a tuple (distname,version,id) which default to the | |
args given as parameters. | |
""" | |
return linux_distribution(distname, version, id, | |
supported_dists=supported_dists, | |
full_distribution_name=0) | |
class _popen: | |
""" Fairly portable (alternative) popen implementation. | |
This is mostly needed in case os.popen() is not available, or | |
doesn't work as advertised, e.g. in Win9X GUI programs like | |
PythonWin or IDLE. | |
Writing to the pipe is currently not supported. | |
""" | |
tmpfile = '' | |
pipe = None | |
bufsize = None | |
mode = 'r' | |
def __init__(self,cmd,mode='r',bufsize=None): | |
if mode != 'r': | |
raise ValueError,'popen()-emulation only supports read mode' | |
import tempfile | |
self.tmpfile = tmpfile = tempfile.mktemp() | |
os.system(cmd + ' > %s' % tmpfile) | |
self.pipe = open(tmpfile,'rb') | |
self.bufsize = bufsize | |
self.mode = mode | |
def read(self): | |
return self.pipe.read() | |
def readlines(self): | |
if self.bufsize is not None: | |
return self.pipe.readlines() | |
def close(self, | |
remove=os.unlink,error=os.error): | |
if self.pipe: | |
rc = self.pipe.close() | |
else: | |
rc = 255 | |
if self.tmpfile: | |
try: | |
remove(self.tmpfile) | |
except error: | |
pass | |
return rc | |
# Alias | |
__del__ = close | |
def popen(cmd, mode='r', bufsize=None): | |
""" Portable popen() interface. | |
""" | |
# Find a working popen implementation preferring win32pipe.popen | |
# over os.popen over _popen | |
popen = None | |
if os.environ.get('OS','') == 'Windows_NT': | |
# On NT win32pipe should work; on Win9x it hangs due to bugs | |
# in the MS C lib (see MS KnowledgeBase article Q150956) | |
try: | |
import win32pipe | |
except ImportError: | |
pass | |
else: | |
popen = win32pipe.popen | |
if popen is None: | |
if hasattr(os,'popen'): | |
popen = os.popen | |
# Check whether it works... it doesn't in GUI programs | |
# on Windows platforms | |
if sys.platform == 'win32': # XXX Others too ? | |
try: | |
popen('') | |
except os.error: | |
popen = _popen | |
else: | |
popen = _popen | |
if bufsize is None: | |
return popen(cmd,mode) | |
else: | |
return popen(cmd,mode,bufsize) | |
def _norm_version(version, build=''): | |
""" Normalize the version and build strings and return a single | |
version string using the format major.minor.build (or patchlevel). | |
""" | |
l = string.split(version,'.') | |
if build: | |
l.append(build) | |
try: | |
ints = map(int,l) | |
except ValueError: | |
strings = l | |
else: | |
strings = map(str,ints) | |
version = string.join(strings[:3],'.') | |
return version | |
_ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) ' | |
'.*' | |
'\[.* ([\d.]+)\])') | |
# Examples of VER command output: | |
# | |
# Windows 2000: Microsoft Windows 2000 [Version 5.00.2195] | |
# Windows XP: Microsoft Windows XP [Version 5.1.2600] | |
# Windows Vista: Microsoft Windows [Version 6.0.6002] | |
# | |
# Note that the "Version" string gets localized on different | |
# Windows versions. | |
def _syscmd_ver(system='', release='', version='', | |
supported_platforms=('win32','win16','dos','os2')): | |
""" Tries to figure out the OS version used and returns | |
a tuple (system,release,version). | |
It uses the "ver" shell command for this which is known | |
to exists on Windows, DOS and OS/2. XXX Others too ? | |
In case this fails, the given parameters are used as | |
defaults. | |
""" | |
if sys.platform not in supported_platforms: | |
return system,release,version | |
# Try some common cmd strings | |
for cmd in ('ver','command /c ver','cmd /c ver'): | |
try: | |
pipe = popen(cmd) | |
info = pipe.read() | |
if pipe.close(): | |
raise os.error,'command failed' | |
# XXX How can I suppress shell errors from being written | |
# to stderr ? | |
except os.error,why: | |
#print 'Command %s failed: %s' % (cmd,why) | |
continue | |
except IOError,why: | |
#print 'Command %s failed: %s' % (cmd,why) | |
continue | |
else: | |
break | |
else: | |
return system,release,version | |
# Parse the output | |
info = string.strip(info) | |
m = _ver_output.match(info) | |
if m is not None: | |
system,release,version = m.groups() | |
# Strip trailing dots from version and release | |
if release[-1] == '.': | |
release = release[:-1] | |
if version[-1] == '.': | |
version = version[:-1] | |
# Normalize the version and build strings (eliminating additional | |
# zeros) | |
version = _norm_version(version) | |
return system,release,version | |
def _win32_getvalue(key,name,default=''): | |
""" Read a value for name from the registry key. | |
In case this fails, default is returned. | |
""" | |
try: | |
# Use win32api if available | |
from win32api import RegQueryValueEx | |
except ImportError: | |
# On Python 2.0 and later, emulate using _winreg | |
import _winreg | |
RegQueryValueEx = _winreg.QueryValueEx | |
try: | |
return RegQueryValueEx(key,name) | |
except: | |
return default | |
def win32_ver(release='',version='',csd='',ptype=''): | |
""" Get additional version information from the Windows Registry | |
and return a tuple (version,csd,ptype) referring to version | |
number, CSD level and OS type (multi/single | |
processor). | |
As a hint: ptype returns 'Uniprocessor Free' on single | |
processor NT machines and 'Multiprocessor Free' on multi | |
processor machines. The 'Free' refers to the OS version being | |
free of debugging code. It could also state 'Checked' which | |
means the OS version uses debugging code, i.e. code that | |
checks arguments, ranges, etc. (Thomas Heller). | |
Note: this function works best with Mark Hammond's win32 | |
package installed, but also on Python 2.3 and later. It | |
obviously only runs on Win32 compatible platforms. | |
""" | |
# XXX Is there any way to find out the processor type on WinXX ? | |
# XXX Is win32 available on Windows CE ? | |
# | |
# Adapted from code posted by Karl Putland to comp.lang.python. | |
# | |
# The mappings between reg. values and release names can be found | |
# here: http://msdn.microsoft.com/library/en-us/sysinfo/base/osversioninfo_str.asp | |
# Import the needed APIs | |
try: | |
import win32api | |
from win32api import RegQueryValueEx, RegOpenKeyEx, \ | |
RegCloseKey, GetVersionEx | |
from win32con import HKEY_LOCAL_MACHINE, VER_PLATFORM_WIN32_NT, \ | |
VER_PLATFORM_WIN32_WINDOWS, VER_NT_WORKSTATION | |
except ImportError: | |
# Emulate the win32api module using Python APIs | |
try: | |
sys.getwindowsversion | |
except AttributeError: | |
# No emulation possible, so return the defaults... | |
return release,version,csd,ptype | |
else: | |
# Emulation using _winreg (added in Python 2.0) and | |
# sys.getwindowsversion() (added in Python 2.3) | |
import _winreg | |
GetVersionEx = sys.getwindowsversion | |
RegQueryValueEx = _winreg.QueryValueEx | |
RegOpenKeyEx = _winreg.OpenKeyEx | |
RegCloseKey = _winreg.CloseKey | |
HKEY_LOCAL_MACHINE = _winreg.HKEY_LOCAL_MACHINE | |
VER_PLATFORM_WIN32_WINDOWS = 1 | |
VER_PLATFORM_WIN32_NT = 2 | |
VER_NT_WORKSTATION = 1 | |
VER_NT_SERVER = 3 | |
REG_SZ = 1 | |
# Find out the registry key and some general version infos | |
winver = GetVersionEx() | |
maj,min,buildno,plat,csd = winver | |
version = '%i.%i.%i' % (maj,min,buildno & 0xFFFF) | |
if hasattr(winver, "service_pack"): | |
if winver.service_pack != "": | |
csd = 'SP%s' % winver.service_pack_major | |
else: | |
if csd[:13] == 'Service Pack ': | |
csd = 'SP' + csd[13:] | |
if plat == VER_PLATFORM_WIN32_WINDOWS: | |
regkey = 'SOFTWARE\\Microsoft\\Windows\\CurrentVersion' | |
# Try to guess the release name | |
if maj == 4: | |
if min == 0: | |
release = '95' | |
elif min == 10: | |
release = '98' | |
elif min == 90: | |
release = 'Me' | |
else: | |
release = 'postMe' | |
elif maj == 5: | |
release = '2000' | |
elif plat == VER_PLATFORM_WIN32_NT: | |
regkey = 'SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion' | |
if maj <= 4: | |
release = 'NT' | |
elif maj == 5: | |
if min == 0: | |
release = '2000' | |
elif min == 1: | |
release = 'XP' | |
elif min == 2: | |
release = '2003Server' | |
else: | |
release = 'post2003' | |
elif maj == 6: | |
if hasattr(winver, "product_type"): | |
product_type = winver.product_type | |
else: | |
product_type = VER_NT_WORKSTATION | |
# Without an OSVERSIONINFOEX capable sys.getwindowsversion(), | |
# or help from the registry, we cannot properly identify | |
# non-workstation versions. | |
try: | |
key = RegOpenKeyEx(HKEY_LOCAL_MACHINE, regkey) | |
name, type = RegQueryValueEx(key, "ProductName") | |
# Discard any type that isn't REG_SZ | |
if type == REG_SZ and name.find("Server") != -1: | |
product_type = VER_NT_SERVER | |
except WindowsError: | |
# Use default of VER_NT_WORKSTATION | |
pass | |
if min == 0: | |
if product_type == VER_NT_WORKSTATION: | |
release = 'Vista' | |
else: | |
release = '2008Server' | |
elif min == 1: | |
if product_type == VER_NT_WORKSTATION: | |
release = '7' | |
else: | |
release = '2008ServerR2' | |
else: | |
release = 'post2008Server' | |
else: | |
if not release: | |
# E.g. Win3.1 with win32s | |
release = '%i.%i' % (maj,min) | |
return release,version,csd,ptype | |
# Open the registry key | |
try: | |
keyCurVer = RegOpenKeyEx(HKEY_LOCAL_MACHINE, regkey) | |
# Get a value to make sure the key exists... | |
RegQueryValueEx(keyCurVer, 'SystemRoot') | |
except: | |
return release,version,csd,ptype | |
# Parse values | |
#subversion = _win32_getvalue(keyCurVer, | |
# 'SubVersionNumber', | |
# ('',1))[0] | |
#if subversion: | |
# release = release + subversion # 95a, 95b, etc. | |
build = _win32_getvalue(keyCurVer, | |
'CurrentBuildNumber', | |
('',1))[0] | |
ptype = _win32_getvalue(keyCurVer, | |
'CurrentType', | |
(ptype,1))[0] | |
# Normalize version | |
version = _norm_version(version,build) | |
# Close key | |
RegCloseKey(keyCurVer) | |
return release,version,csd,ptype | |
def _mac_ver_lookup(selectors,default=None): | |
from gestalt import gestalt | |
import MacOS | |
l = [] | |
append = l.append | |
for selector in selectors: | |
try: | |
append(gestalt(selector)) | |
except (RuntimeError, MacOS.Error): | |
append(default) | |
return l | |
def _bcd2str(bcd): | |
return hex(bcd)[2:] | |
def _mac_ver_gestalt(): | |
""" | |
Thanks to Mark R. Levinson for mailing documentation links and | |
code examples for this function. Documentation for the | |
gestalt() API is available online at: | |
http://www.rgaros.nl/gestalt/ | |
""" | |
# Check whether the version info module is available | |
try: | |
import gestalt | |
import MacOS | |
except ImportError: | |
return None | |
# Get the infos | |
sysv,sysa = _mac_ver_lookup(('sysv','sysa')) | |
# Decode the infos | |
if sysv: | |
major = (sysv & 0xFF00) >> 8 | |
minor = (sysv & 0x00F0) >> 4 | |
patch = (sysv & 0x000F) | |
if (major, minor) >= (10, 4): | |
# the 'sysv' gestald cannot return patchlevels | |
# higher than 9. Apple introduced 3 new | |
# gestalt codes in 10.4 to deal with this | |
# issue (needed because patch levels can | |
# run higher than 9, such as 10.4.11) | |
major,minor,patch = _mac_ver_lookup(('sys1','sys2','sys3')) | |
release = '%i.%i.%i' %(major, minor, patch) | |
else: | |
release = '%s.%i.%i' % (_bcd2str(major),minor,patch) | |
if sysa: | |
machine = {0x1: '68k', | |
0x2: 'PowerPC', | |
0xa: 'i386'}.get(sysa,'') | |
return release,versioninfo,machine | |
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 | |
pl = plistlib.readPlist(fn) | |
release = pl['ProductVersion'] | |
versioninfo=('', '', '') | |
machine = os.uname()[4] | |
if machine in ('ppc', 'Power Macintosh'): | |
# for compatibility with the gestalt based code | |
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 paramter 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 doesn't work for some reason fall back to reading the | |
# information using gestalt calls. | |
info = _mac_ver_gestalt() | |
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 == 'Rhapsody': | |
# Apple's BSD derivative | |
# XXX How can we determine the marketing release number ? | |
return 'MacOS X Server',system+release,version | |
elif 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 = string.split(release,'.') | |
if l: | |
try: | |
major = int(l[0]) | |
except ValueError: | |
pass | |
else: | |
major = major - 3 | |
l[0] = str(major) | |
release = string.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' | |
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 = string.join( | |
map(string.strip, | |
filter(len, args)), | |
'-') | |
# Cleanup some possible filename obstacles... | |
replace = string.replace | |
platform = replace(platform,' ','_') | |
platform = replace(platform,'/','-') | |
platform = replace(platform,'\\','-') | |
platform = replace(platform,':','-') | |
platform = replace(platform,';','-') | |
platform = replace(platform,'"','-') | |
platform = replace(platform,'(','-') | |
platform = replace(platform,')','-') | |
# No need to report 'unknown' information... | |
platform = replace(platform,'unknown','') | |
# Fold '--'s and remove trailing '-' | |
while 1: | |
cleaned = replace(platform,'--','-') | |
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 socket.error: | |
# Still not working... | |
return default | |
# os.path.abspath is new in Python 1.5.2: | |
if not hasattr(os.path,'abspath'): | |
def _abspath(path, | |
isabs=os.path.isabs,join=os.path.join,getcwd=os.getcwd, | |
normpath=os.path.normpath): | |
if not isabs(path): | |
path = join(getcwd(), path) | |
return normpath(path) | |
else: | |
_abspath = os.path.abspath | |
def _follow_symlinks(filepath): | |
""" In case filepath is a symlink, follow it until a | |
real file is reached. | |
""" | |
filepath = _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','os2'): | |
# XXX Others too ? | |
return default | |
try: | |
f = os.popen('uname %s 2> %s' % (option, DEV_NULL)) | |
except (AttributeError,os.error): | |
return default | |
output = string.strip(f.read()) | |
rc = f.close() | |
if not output or rc: | |
return default | |
else: | |
return output | |
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 | |
ommit the filename in its output and if possible the -L option | |
to have the command follow symlinks. It returns default in | |
case the command should fail. | |
""" | |
if sys.platform in ('dos','win32','win16','os2'): | |
# XXX Others too ? | |
return default | |
target = _follow_symlinks(target).replace('"', '\\"') | |
try: | |
f = os.popen('file "%s" 2> %s' % (target, DEV_NULL)) | |
except (AttributeError,os.error): | |
return default | |
output = string.strip(f.read()) | |
rc = f.close() | |
if not output or rc: | |
return default | |
else: | |
return output | |
### 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'), | |
} | |
_architecture_split = re.compile(r'[\s,]').split | |
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 | |
try: | |
size = struct.calcsize('P') | |
except struct.error: | |
# Older installations can only query longs | |
size = struct.calcsize('l') | |
bits = str(size*8) + 'bit' | |
# Get data from the 'file' system command | |
if executable: | |
output = _syscmd_file(executable, '') | |
else: | |
output = '' | |
if not output 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 | |
# Split the output into a list of strings omitting the filename | |
fileout = _architecture_split(output)[1:] | |
if 'executable' 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_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 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 = string.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 = 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()[0] | |
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()[1] | |
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()[2] | |
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()[3] | |
def machine(): | |
""" Returns the machine type, e.g. 'i386' | |
An empty string is returned if the value cannot be determined. | |
""" | |
return uname()[4] | |
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()[5] | |
### Various APIs for extracting information from sys.version | |
_sys_version_parser = re.compile( | |
r'([\w.+]+)\s*' | |
'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*' | |
'\[([^\]]+)\]?') | |
_ironpython_sys_version_parser = re.compile( | |
r'IronPython\s*' | |
'([\d\.]+)' | |
'(?: \(([\d\.]+)\))?' | |
' on (.NET [\d\.]+)') | |
_pypy_sys_version_parser = re.compile( | |
r'([\w.+]+)\s*' | |
'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*' | |
'\[PyPy [^\]]+\]?') | |
_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 sys_version[:10] == 'IronPython': | |
# IronPython | |
name = 'IronPython' | |
match = _ironpython_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[:4] == '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() | |
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' | |
builddate = builddate + ' ' + buildtime | |
if hasattr(sys, 'subversion'): | |
# sys.subversion was added in Python 2.5 | |
_, branch, revision = sys.subversion | |
else: | |
branch = '' | |
revision = '' | |
# Add the patchlevel version if missing | |
l = string.split(version, '.') | |
if len(l) == 2: | |
l.append('0') | |
version = string.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(string.split(_sys_version()[1], '.')) | |
def python_branch(): | |
""" Returns a string identifying the Python implementation | |
branch. | |
For CPython this is the Subversion 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 Subversion 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 == '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',): | |
# Linux based systems | |
distname,distversion,distid = dist('') | |
if distname and not terse: | |
platform = _platform(system,release,machine,processor, | |
'with', | |
distname,distversion,distid) | |
else: | |
# If the distribution name is unknown check for libc vs. glibc | |
libcname,libcversion = libc_ver(sys.executable) | |
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) | |
elif system == 'MacOS': | |
# MacOS platforms | |
if terse: | |
platform = _platform(system,release) | |
else: | |
platform = _platform(system,release,machine) | |
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) |