python-gssapi/setup.py at main · abbra/python-gssapi · GitHub

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#!/usr/bin/env python

from __future__ import print_function

from setuptools import setup

from setuptools import Distribution

from setuptools.command.sdist import sdist

from setuptools.extension import Extension

import subprocess

import platform

import re

import sys

import os

import shutil

import shlex

SKIP_CYTHON_FILE = '__dont_use_cython__.txt'

if os.path.exists(SKIP_CYTHON_FILE):

print("In distributed package, building from C files...", file=sys.stderr)

SOURCE_EXT = 'c'

else:

try:

from Cython.Build import cythonize

print("Building from Cython files...", file=sys.stderr)

SOURCE_EXT = 'pyx'

except ImportError:

print("Cython not found, building from C files...",

file=sys.stderr)

SOURCE_EXT = 'c'

def get_output(*args, **kwargs):

res = subprocess.check_output(*args, shell=True, **kwargs)

decoded = res.decode('utf-8')

return decoded.strip()

# get the compile and link args

kc = "krb5-config"

posix = os.name != 'nt'

link_args, compile_args = [

shlex.split(os.environ[e], posix=posix) if e in os.environ else None

for e in ['GSSAPI_LINKER_ARGS', 'GSSAPI_COMPILER_ARGS']

]

osx_has_gss_framework = False

if sys.platform == 'darwin':

mac_ver = [int(v) for v in platform.mac_ver()[0].split('.')]

osx_has_gss_framework = (mac_ver >= [10, 7, 0])

winkrb_path = None

if os.name == 'nt':

# Try to find location of MIT kerberos

# First check program files of the appropriate architecture

_pf_path = os.path.join(os.environ['ProgramFiles'], 'MIT', 'Kerberos')

if os.path.exists(_pf_path):

winkrb_path = _pf_path

else:

# Try to detect kinit in PATH

_kinit_path = shutil.which('kinit')

if _kinit_path is None:

print("Failed find MIT kerberos!")

else:

winkrb_path = os.path.dirname(os.path.dirname(_kinit_path))

# Monkey patch distutils if it throws errors getting msvcr.

# For MinGW it won't need it.

from distutils import cygwinccompiler

try:

cygwinccompiler.get_msvcr()

except ValueError:

cygwinccompiler.get_msvcr = lambda *a, **kw: []

if sys.platform.startswith("freebsd"):

# FreeBSD does $PATH backward, for our purposes. That is, the package

# manager's version of the software is in /usr/local, which is in PATH

# *after* the version in /usr. We prefer the package manager's version

# because the Heimdal in base is truly ancient, but this can be overridden

# - either in the "normal" fashion by putting something in PATH in front

# of it, or by removing /usr/local from PATH.

bins = []

for b in os.environ["PATH"].split(":"):

p = f"{b}/krb5-config"

if not os.path.exists(p):

continue

bins.append(p)

if len(bins) > 1 and bins[0] == "/usr/bin/krb5-config" and \

"/usr/local/bin/krb5-config" in bins:

kc = "/usr/local/bin/krb5-config"

print(f"Detected: {kc}")

if link_args is None:

if osx_has_gss_framework:

link_args = ['-framework', 'GSS']

elif winkrb_path:

_libs = os.path.join(

winkrb_path, 'lib', 'amd64' if sys.maxsize > 2 ** 32 else 'i386'

)

link_args = (

['-L%s' % _libs]

+ ['-l%s' % os.path.splitext(lib)[0] for lib in os.listdir(_libs)]

)

elif os.environ.get('MINGW_PREFIX'):

link_args = ['-lgss']

else:

link_args = shlex.split(get_output(f"{kc} --libs gssapi"))

if compile_args is None:

if osx_has_gss_framework:

compile_args = ['-framework', 'GSS', '-DOSX_HAS_GSS_FRAMEWORK']

elif winkrb_path:

compile_args = [

'-I%s' % os.path.join(winkrb_path, 'include'),

'-DMS_WIN64'

]

elif os.environ.get('MINGW_PREFIX'):

compile_args = ['-fPIC']

else:

compile_args = shlex.split(get_output(f"{kc} --cflags gssapi"))

# add in the extra workarounds for different include structures

if winkrb_path:

prefix = winkrb_path

else:

try:

prefix = get_output(f"{kc} gssapi --prefix")

except Exception:

print("WARNING: couldn't find krb5-config; assuming prefix of %s"

% str(sys.prefix))

prefix = sys.prefix

gssapi_ext_h = os.path.join(prefix, 'include/gssapi/gssapi_ext.h')

if os.path.exists(gssapi_ext_h):

compile_args.append("-DHAS_GSSAPI_EXT_H")

# Create a define to detect msys in the headers

if sys.platform == 'msys':

compile_args.append('-D__MSYS__')

# ensure that any specific directories are listed before any generic system

# directories inserted by setuptools

# Also separate out specified libraries as MSBuild requires different args

_link_args = link_args

library_dirs, libraries, link_args = [], [], []

for arg in _link_args:

if arg.startswith('-L'):

library_dirs.append(arg[2:])

elif arg.startswith('-l'):

libraries.append(arg[2:])

else:

link_args.append(arg)

ENABLE_SUPPORT_DETECTION = \

(os.environ.get('GSSAPI_SUPPORT_DETECT', 'true').lower() == 'true')

if ENABLE_SUPPORT_DETECTION:

import ctypes.util

main_lib = os.environ.get('GSSAPI_MAIN_LIB', None)

main_path = ""

if main_lib is None and osx_has_gss_framework:

main_lib = ctypes.util.find_library('GSS')

elif os.environ.get('MINGW_PREFIX'):

main_lib = os.environ.get('MINGW_PREFIX')+'/bin/libgss-3.dll'

elif sys.platform == 'msys':

# Plain msys, not running in MINGW_PREFIX. Try to get the lib from one

_main_lib = (

'/mingw%d/bin/libgss-3.dll'

% (64 if sys.maxsize > 2 ** 32 else 32)

)

if os.path.exists(_main_lib):

main_lib = _main_lib

os.environ['PATH'] += os.pathsep + os.path.dirname(main_lib)

elif main_lib is None:

for opt in libraries:

if opt.startswith('gssapi'):

if os.name == 'nt':

main_lib = '%s.dll' % opt

if winkrb_path:

main_path = os.path.join(winkrb_path, 'bin')

else:

main_lib = 'lib%s.so' % opt

for opt in link_args:

# To support Heimdal on Debian, read the linker path.

if opt.startswith('-Wl,/'):

main_path = opt[4:] + "/"

if main_path == "":

for d in library_dirs:

if os.path.exists(os.path.join(d, main_lib)):

main_path = d

break

if main_lib is None:

raise Exception("Could not find main GSSAPI shared library. Please "

"try setting GSSAPI_MAIN_LIB yourself or setting "

"GSSAPI_SUPPORT_DETECT to 'false'")

GSSAPI_LIB = ctypes.CDLL(os.path.join(main_path, main_lib))

# add in the flag that causes us not to compile from Cython when

# installing from an sdist

class sdist_gssapi(sdist):

def run(self):

if not self.dry_run:

with open(SKIP_CYTHON_FILE, 'w') as flag_file:

flag_file.write('COMPILE_FROM_C_ONLY')

sdist.run(self)

os.remove(SKIP_CYTHON_FILE)

DONT_CYTHONIZE_FOR = ('clean',)

class GSSAPIDistribution(Distribution, object):

def run_command(self, command):

self._last_run_command = command

Distribution.run_command(self, command)

@property

def ext_modules(self):

if SOURCE_EXT != 'pyx':

return getattr(self, '_ext_modules', None)

if getattr(self, '_ext_modules', None) is None:

return None

if getattr(self, '_last_run_command', None) in DONT_CYTHONIZE_FOR:

return self._ext_modules

if getattr(self, '_cythonized_ext_modules', None) is None:

self._cythonized_ext_modules = cythonize(

self._ext_modules,

language_level=2,

)

return self._cythonized_ext_modules

@ext_modules.setter

def ext_modules(self, mods):

self._cythonized_ext_modules = None

self._ext_modules = mods

@ext_modules.deleter

def ext_modules(self):

del self._ext_modules

del self._cythonized_ext_modules

def make_extension(name_fmt, module, **kwargs):

"""Helper method to remove the repetition in extension declarations."""

source = name_fmt.replace('.', '/') % module + '.' + SOURCE_EXT

if not os.path.exists(source):

raise OSError(source)

return Extension(

name_fmt % module,

extra_link_args=link_args,

extra_compile_args=compile_args,

library_dirs=library_dirs,

libraries=libraries,

sources=[source],

**kwargs

)

# detect support

def main_file(module):

return make_extension('gssapi.raw.%s', module)

ENUM_EXTS = []

def extension_file(module, canary):

if ENABLE_SUPPORT_DETECTION and not hasattr(GSSAPI_LIB, canary):

print('Skipping the %s extension because it '

'is not supported by your GSSAPI implementation...' % module)

return

try:

ENUM_EXTS.append(

make_extension('gssapi.raw._enum_extensions.ext_%s', module,

include_dirs=['gssapi/raw/'])

)

except OSError:

pass

return make_extension('gssapi.raw.ext_%s', module)

def gssapi_modules(lst):

# filter out missing files

res = [mod for mod in lst if mod is not None]

# add in supported mech files

res.extend(

make_extension('gssapi.raw.mech_%s', mech)

for mech in os.environ.get('GSSAPI_MECHS', 'krb5').split(',')

)

# add in any present enum extension files

res.extend(ENUM_EXTS)

return res

long_desc = re.sub(r'\.\. role:: \w+$code$\s*\n\s*.+', '',

re.sub(r':(python|bash|code):', '',

re.sub(r'\.\. code-block:: \w+', '::',

open('README.txt').read())))

install_requires = [

'decorator',

]

setup(

name='gssapi',

version='1.6.11',

author='The Python GSSAPI Team',

author_email='rharwood@redhat.com',

packages=['gssapi', 'gssapi.raw', 'gssapi.raw._enum_extensions',

'gssapi.tests'],

description='Python GSSAPI Wrapper',

long_description=long_desc,

license='LICENSE.txt',

url="https://github.com/pythongssapi/python-gssapi",

python_requires=">=3.6.*",

classifiers=[

'Development Status :: 5 - Production/Stable',

'Programming Language :: Python',

'Programming Language :: Python :: 3',

'Programming Language :: Python :: 3.6',

'Programming Language :: Python :: 3.7',

'Programming Language :: Python :: 3.8',

'Programming Language :: Python :: 3.9',

'Intended Audience :: Developers',

'License :: OSI Approved :: ISC License (ISCL)',

'Programming Language :: Python :: Implementation :: CPython',

'Programming Language :: Cython',

'Topic :: Security',

'Topic :: Software Development :: Libraries :: Python Modules'

distclass=GSSAPIDistribution,

cmdclass={'sdist': sdist_gssapi},

ext_modules=gssapi_modules([

main_file('misc'),

main_file('exceptions'),

main_file('creds'),

main_file('names'),

main_file('sec_contexts'),

main_file('types'),

main_file('message'),

main_file('oids'),

main_file('cython_converters'),

main_file('chan_bindings'),

extension_file('s4u', 'gss_acquire_cred_impersonate_name'),

extension_file('cred_store', 'gss_store_cred_into'),

extension_file('rfc4178', 'gss_set_neg_mechs'),

extension_file('rfc5587', 'gss_indicate_mechs_by_attrs'),

extension_file('rfc5588', 'gss_store_cred'),

extension_file('rfc5801', 'gss_inquire_saslname_for_mech'),

extension_file('cred_imp_exp', 'gss_import_cred'),

extension_file('dce', 'gss_wrap_iov'),

extension_file('iov_mic', 'gss_get_mic_iov'),

extension_file('ggf', 'gss_inquire_sec_context_by_oid'),

extension_file('set_cred_opt', 'gss_set_cred_option'),

# see ext_rfc6680_comp_oid for more information on this split

extension_file('rfc6680', 'gss_display_name_ext'),

extension_file('rfc6680_comp_oid', 'GSS_C_NT_COMPOSITE_EXPORT'),

# see ext_password{,_add}.pyx for more information on this split

extension_file('password', 'gss_acquire_cred_with_password'),

extension_file('password_add', 'gss_add_cred_with_password'),

]),

keywords=['gssapi', 'security'],

install_requires=install_requires

)

python-gssapi/setup.py at main · abbra/python-gssapi · GitHub

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