File: setup.py

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#
# ufw: front-end for Linux firewalling
#
# Copyright 2008-2016 Canonical Ltd.
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License version 3,
#    as published by the Free Software Foundation.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#
# Install with:
# python3 ./setup.py install --root="/tmp/ufw"
#
# To specify a different interpreter for ufw:
# python3.7 ./setup.py install --root="/tmp/ufw"
# python2.7 ./setup.py install --root="/tmp/ufw"
#

from __future__ import print_function
from distutils.command.install import install as _install
from distutils.core import setup
import errno
import os
import re
import sys
import shutil
import subprocess

ufw_version = '0.36'

def cmd(command):
    '''Try to execute the given command.'''
    try:
        sp = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
    except OSError as e:
        return [127, str(e)]

    out = sp.communicate()[0]
    return [sp.returncode,out]

class Install(_install, object):
    '''Override distutils to install the files where we want them.'''
    def run(self):
        if self.home != None and self.root != None:
            print("Don't specify --home and --root at same time")
            return

        real_confdir = os.path.join('/etc')
        real_statedir = os.path.join('/lib', 'ufw')
        real_prefix = self.prefix
        if self.home != None:
            real_confdir = self.home + real_confdir
            real_statedir = self.home + real_statedir
            real_prefix = self.home + '/usr'
        real_sharedir = os.path.join(real_prefix, 'share', 'ufw')

        # Update the modules' paths
        for fn in [ 'common.py' ]:
            # 'staging' is used with just 'install' but build_lib is used when
            # using 'build'. We could probably override 'def build()' but this
            # at least works
            for d in [os.path.join(self.build_lib, "ufw"), 'staging']:
                f = os.path.join(d, fn)
                if not os.path.exists(f):
                    continue
                print("Updating " + f)
                subprocess.call(["sed",
                                 "-i",
                                 "s%#CONFIG_PREFIX#%" + real_confdir + "%g",
                                 f])

                subprocess.call(["sed",
                                 "-i",
                                 "s%#STATE_PREFIX#%" + real_statedir + "%g",
                                 f])

                subprocess.call(["sed",
                                 "-i",
                                 "s%#PREFIX#%" + real_prefix + "%g",
                                 f])

                subprocess.call(["sed",
                                 "-i",
                                 "s%#IPTABLES_DIR#%" + iptables_dir + "%g",
                                 f])

                subprocess.call(["sed",
                                 "-i",
                                 "s%#SHARE_DIR#%" + real_sharedir + "%g",
                                 f])

                if fn == 'common.py' and 'UFW_SKIP_CHECKS' in os.environ and \
                   os.environ['UFW_SKIP_CHECKS'] != '':
                    print("Updating do_checks")
                    subprocess.call(["sed",
                                     "-i",
                                     "s%do_checks = True%do_checks = False%g",
                                     f])

        # Now byte-compile everything
        super(Install, self).run()

        # Install script and data files
        prefix = real_prefix
        if self.root != None:
            prefix = self.root + real_prefix

        script = os.path.join(prefix, 'sbin', 'ufw')
        manpage = os.path.join(prefix, 'share', 'man', 'man8', 'ufw.8')
        manpage_f = os.path.join(prefix, 'share', 'man', 'man8', \
                                 'ufw-framework.8')

        for f in [ script, manpage, manpage_f ]:
            self.mkpath(os.path.dirname(f))

        # update the interpreter to that of the one the user specified for setup
        print("Updating staging/ufw to use %s" % (sys.executable))
        subprocess.call(["sed",
                         "-i",
                         "1s%^#.*python.*%#! /usr/bin/env " + sys.executable + "%g",
                         'staging/ufw'])
        self.copy_file('staging/ufw', script)
        self.copy_file('doc/ufw.8', manpage)
        self.copy_file('doc/ufw-framework.8', manpage_f)

        # Install state files and helper scripts
        statedir = real_statedir
        if self.root != None:
            statedir = self.root + real_statedir
        self.mkpath(statedir)

        init_helper = os.path.join(statedir, 'ufw-init')
        init_helper_functions = os.path.join(statedir, 'ufw-init-functions')
        self.copy_file('src/ufw-init', init_helper)
        self.copy_file('src/ufw-init-functions', init_helper_functions)

        # Install translations
        transdir = real_sharedir
        if self.root != None:
            transdir = self.root + real_sharedir
        i18ndir = os.path.join(transdir, 'messages')
        self.mkpath(i18ndir)
        if len(os.listdir('locales/mo')) == 0:
            subprocess.call(["make", "mo"])
        self.copy_tree('locales/mo', i18ndir)

        # Install configuration files
        confdir = real_confdir
        if self.root != None:
            confdir = self.root + real_confdir

        defaults = os.path.join(confdir, 'default', 'ufw')
        ufwconf = os.path.join(confdir, 'ufw', 'ufw.conf')
        sysctl = os.path.join(confdir, 'ufw', 'sysctl.conf')
        before_rules = os.path.join(confdir, 'ufw', 'before.rules')
        after_rules = os.path.join(confdir, 'ufw', 'after.rules')
        before6_rules = os.path.join(confdir, 'ufw', 'before6.rules')
        after6_rules = os.path.join(confdir, 'ufw', 'after6.rules')
        user_rules = os.path.join(confdir, 'ufw', 'user.rules')
        user6_rules = os.path.join(confdir, 'ufw', 'user6.rules')

        apps_dir = os.path.join(confdir, 'ufw', 'applications.d')
        init_before_hook = os.path.join(confdir, 'ufw', 'before.init')
        init_after_hook = os.path.join(confdir, 'ufw', 'after.init')

        for f in [ defaults, ufwconf ]:
            self.mkpath(os.path.dirname(f))

        self.mkpath(apps_dir)
        for f in os.listdir('profiles'):
            self.copy_file(os.path.join('profiles', f), apps_dir)

        self.copy_file('conf/ufw.defaults', defaults)
        self.copy_file('conf/ufw.conf', ufwconf)
        self.copy_file('conf/sysctl.conf', sysctl)
        self.copy_file('conf/before.rules', before_rules)
        self.copy_file('conf/after.rules', after_rules)
        self.copy_file('conf/before6.rules', before6_rules)
        self.copy_file('conf/after6.rules', after6_rules)
        self.copy_file('conf/user.rules', user_rules)
        self.copy_file('conf/user6.rules', user6_rules)
        self.copy_file('src/before.init', init_before_hook)
        self.copy_file('src/after.init', init_after_hook)

        # Update the installed rules files' permissions
        for f in [ before_rules, after_rules, before6_rules, after6_rules, \
                      user_rules, user6_rules, init_before_hook, \
                      init_after_hook ]:
            os.chmod(f, 0o640)

        # Update the installed files' paths
        for f in [ defaults, ufwconf, before_rules, after_rules, \
                      before6_rules, after6_rules, script, \
                      manpage, manpage_f, sysctl, init_helper, \
                      init_helper_functions, init_before_hook, \
                      init_after_hook ]:
            print("Updating " + f)
            subprocess.call(["sed",
                             "-i",
                             "s%#CONFIG_PREFIX#%" + real_confdir + "%g",
                             f])

            subprocess.call(["sed",
                             "-i",
                             "s%#PREFIX#%" + real_prefix + "%g",
                             f])

            subprocess.call(["sed",
                             "-i",
                             "s%#STATE_PREFIX#%" + real_statedir + "%g",
                             f])

            subprocess.call(["sed",
                             "-i",
                             "s%#VERSION#%" + ufw_version + "%g",
                             f])

        # Install pristine copies of rules files
        sharedir = real_sharedir
        if self.root != None:
            sharedir = self.root + real_sharedir
        rulesdir = os.path.join(sharedir, 'iptables')
        self.mkpath(rulesdir)
        for f in [ before_rules, after_rules, \
                      before6_rules, after6_rules, \
                      user_rules, user6_rules ]:
            self.copy_file(f, rulesdir)

if sys.version_info[0] < 2 or \
   (sys.version_info[0] == 2 and sys.version_info[1] < 6):
    print("ERROR: Need at least python 2.6", file=sys.stderr)
    sys.exit(1)

if os.path.exists('staging'):
    shutil.rmtree('staging')
shutil.copytree('src', 'staging')
os.unlink(os.path.join('staging', 'ufw-init'))
os.unlink(os.path.join('staging', 'ufw-init-functions'))

iptables_exe = ''
iptables_dir = ''

for e in ['iptables']:
    # Historically iptables was in /sbin, then later also symlinked from
    # /usr/sbin/iptables to /sbin/iptables. Debian bullseye moves iptables
    # to /usr/sbin with no symlink in /sbin except on upgrades. To accomodate
    # buildds that may still have the old iptables, search /usr/sbin first
    for dir in ['/usr/sbin', '/sbin', '/usr/bin', '/bin', '/usr/local/sbin', \
                '/usr/local/bin']:
        if e == "iptables":
            if os.path.exists(os.path.join(dir, e)):
                iptables_dir = dir
                iptables_exe = os.path.join(iptables_dir, "iptables")
                print("Found '%s'" % iptables_exe)
            else:
                continue

        if iptables_exe != "":
            break


if iptables_exe == '':
    print("ERROR: could not find required binary 'iptables'", file=sys.stderr)
    sys.exit(1)

for e in ['ip6tables', 'iptables-restore', 'ip6tables-restore']:
    if not os.path.exists(os.path.join(iptables_dir, e)):
        print("ERROR: could not find required binary '%s'" % (e), file=sys.stderr)
        sys.exit(1)

(rc, out) = cmd([iptables_exe, '-V'])
if rc != 0:
    raise OSError(errno.ENOENT, "Could not find version for '%s'" % \
                  (iptables_exe))
version = re.sub('^v', '', re.split('\s', str(out))[1])
print("Found '%s' version '%s'" % (iptables_exe, version))
if version < "1.4":
    print("WARN: version '%s' has limited IPv6 support. See README for details." % (version), file=sys.stderr)

setup (name='ufw',
      version=ufw_version,
      description='front-end for Linux firewalling',
      long_description='front-end for Linux firewalling',
      author='Jamie Strandboge',
      author_email='jamie@canonical.com',
      url='https://launchpad.net/ufw',
      license='GPL-3',
      cmdclass={'install': Install},
      package_dir={'ufw': 'staging'},
      py_modules=['ufw.backend', 'ufw.backend_iptables', 'ufw.common', 'ufw.frontend', 'ufw.util', 'ufw.applications', 'ufw.parser']
)

shutil.rmtree('staging')