mirror of
https://github.com/samba-team/samba.git
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80e3daed12
Signed-off-by: David Mulder <dmulder@suse.com> Reviewed-by: Jeremy Allison <jra@samba.org>
173 lines
7.5 KiB
Python
173 lines
7.5 KiB
Python
# gp_scripts_ext samba gpo policy
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# Copyright (C) David Mulder <dmulder@suse.com> 2020
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os, re
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from subprocess import Popen, PIPE
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from samba.gpclass import gp_pol_ext, drop_privileges
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from base64 import b64encode
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from hashlib import blake2b
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from tempfile import NamedTemporaryFile
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intro = '''
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### autogenerated by samba
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#
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# This file is generated by the gp_scripts_ext Group Policy
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# Client Side Extension. To modify the contents of this file,
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# modify the appropriate Group Policy objects which apply
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# to this machine. DO NOT MODIFY THIS FILE DIRECTLY.
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#
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'''
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end = '''
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### autogenerated by samba ###
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'''
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class gp_scripts_ext(gp_pol_ext):
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def __str__(self):
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return 'Unix Settings/Scripts'
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def process_group_policy(self, deleted_gpo_list, changed_gpo_list, cdir=None):
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for guid, settings in deleted_gpo_list:
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self.gp_db.set_guid(guid)
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if str(self) in settings:
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for attribute, script in settings[str(self)].items():
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if os.path.exists(script):
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os.unlink(script)
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self.gp_db.delete(str(self), attribute)
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self.gp_db.commit()
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for gpo in changed_gpo_list:
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if gpo.file_sys_path:
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reg_key = 'Software\\Policies\\Samba\\Unix Settings'
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sections = { '%s\\Daily Scripts' % reg_key : '/etc/cron.daily',
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'%s\\Monthly Scripts' % reg_key : '/etc/cron.monthly',
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'%s\\Weekly Scripts' % reg_key : '/etc/cron.weekly',
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'%s\\Hourly Scripts' % reg_key : '/etc/cron.hourly' }
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self.gp_db.set_guid(gpo.name)
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pol_file = 'MACHINE/Registry.pol'
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path = os.path.join(gpo.file_sys_path, pol_file)
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pol_conf = self.parse(path)
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if not pol_conf:
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continue
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for e in pol_conf.entries:
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if e.keyname in sections.keys() and e.data.strip():
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cron_dir = sections[e.keyname] if not cdir else cdir
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attribute = '%s:%s' % (e.keyname,
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b64encode(e.data.encode()).decode())
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old_val = self.gp_db.retrieve(str(self), attribute)
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if not old_val:
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with NamedTemporaryFile(prefix='gp_', mode="w+",
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delete=False, dir=cron_dir) as f:
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contents = '#!/bin/sh\n%s' % intro
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contents += '%s\n' % e.data
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f.write(contents)
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os.chmod(f.name, 0o700)
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self.gp_db.store(str(self), attribute, f.name)
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self.gp_db.commit()
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def rsop(self, gpo, target='MACHINE'):
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output = {}
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pol_file = '%s/Registry.pol' % target
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if gpo.file_sys_path:
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path = os.path.join(gpo.file_sys_path, pol_file)
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pol_conf = self.parse(path)
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if not pol_conf:
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return output
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for e in pol_conf.entries:
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key = e.keyname.split('\\')[-1]
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if key.endswith('Scripts') and e.data.strip():
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if key not in output.keys():
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output[key] = []
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output[key].append(e.data)
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return output
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def fetch_crontab(username):
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p = Popen(['crontab', '-l', '-u', username], stdout=PIPE, stderr=PIPE)
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out, err = p.communicate()
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if p.returncode != 0:
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raise RuntimeError('Failed to read the crontab: %s' % err)
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m = re.findall('%s(.*)%s' % (intro, end), out.decode(), re.DOTALL)
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if len(m) == 1:
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entries = m[0].strip().split('\n')
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else:
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entries = []
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m = re.findall('(.*)%s.*%s(.*)' % (intro, end), out.decode(), re.DOTALL)
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if len(m) == 1:
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others = '\n'.join([l.strip() for l in m[0]])
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else:
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others = out.decode()
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return others, entries
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def install_crontab(fname, username):
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p = Popen(['crontab', fname, '-u', username], stdout=PIPE, stderr=PIPE)
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_, err = p.communicate()
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if p.returncode != 0:
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raise RuntimeError('Failed to install crontab: %s' % err)
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class gp_user_scripts_ext(gp_scripts_ext):
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def process_group_policy(self, deleted_gpo_list, changed_gpo_list):
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for guid, settings in deleted_gpo_list:
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self.gp_db.set_guid(guid)
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if str(self) in settings:
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others, entries = fetch_crontab(self.username)
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for attribute, entry in settings[str(self)].items():
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if entry in entries:
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entries.remove(entry)
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self.gp_db.delete(str(self), attribute)
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with NamedTemporaryFile() as f:
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if len(entries) > 0:
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f.write('\n'.join([others, intro,
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'\n'.join(entries), end]).encode())
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else:
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f.write(others.encode())
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f.flush()
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install_crontab(f.name, self.username)
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self.gp_db.commit()
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for gpo in changed_gpo_list:
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if gpo.file_sys_path:
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reg_key = 'Software\\Policies\\Samba\\Unix Settings'
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sections = { '%s\\Daily Scripts' % reg_key : '@daily',
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'%s\\Monthly Scripts' % reg_key : '@monthly',
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'%s\\Weekly Scripts' % reg_key : '@weekly',
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'%s\\Hourly Scripts' % reg_key : '@hourly' }
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self.gp_db.set_guid(gpo.name)
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pol_file = 'USER/Registry.pol'
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path = os.path.join(gpo.file_sys_path, pol_file)
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pol_conf = drop_privileges('root', self.parse, path)
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if not pol_conf:
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continue
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for e in pol_conf.entries:
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if e.keyname in sections.keys() and e.data.strip():
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cron_freq = sections[e.keyname]
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attribute = '%s:%s' % (e.keyname,
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blake2b(e.data.encode()).hexdigest())
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old_val = self.gp_db.retrieve(str(self), attribute)
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entry = '%s %s' % (cron_freq, e.data)
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others, entries = fetch_crontab(self.username)
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if not old_val or entry not in entries:
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entries.append(entry)
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with NamedTemporaryFile() as f:
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f.write('\n'.join([others, intro,
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'\n'.join(entries), end]).encode())
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f.flush()
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install_crontab(f.name, self.username)
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self.gp_db.store(str(self), attribute, entry)
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self.gp_db.commit()
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def rsop(self, gpo):
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return super().rsop(gpo, target='USER')
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