#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# Copyright 2012-2021 Univention GmbH
#
# http://www.univention.de/
#
# All rights reserved.
#
# The source code of this program is made available
# under the terms of the GNU Affero General Public License version 3
# (GNU AGPL V3) as published by the Free Software Foundation.
#
# Binary versions of this program provided by Univention to you as
# well as other copyrighted, protected or trademarked materials like
# Logos, graphics, fonts, specific documentations and configurations,
# cryptographic keys etc. are subject to a license agreement between
# you and Univention and not subject to the GNU AGPL V3.
#
# In the case you use this program under the terms of the GNU AGPL V3,
# the program is provided 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License with the Debian GNU/Linux or Univention distribution in file
# /usr/share/common-licenses/AGPL-3; if not, see
# <http://www.gnu.org/licenses/>.
"""
Parser for smbstatus
"""
import re
import subprocess
import univention.debug as ud
REGEX_LOCKED_FILES = re.compile(
r"(?P<pid>[0-9]+)\s+(?P<uid>[0-9]+)\s+(?P<denyMode>[A-Z_]+)\s+(?P<access>[0-9x]+)\s+"
r"(?P<rw>[A-Z]+)\s+(?P<oplock>[A-Z_+]+)\s+(?P<sharePath>\S+)\s+(?P<filename>\S+)\s+(?P<time>.*)$"
)
REGEX_USERS = re.compile(
r"(?P<pid>[0-9]+)\s+(?P<username>\S+)\s+(?P<group>.+\S)\s+(?P<machine>\S+)\s+"
r"\(((?P<ipAddress>[0-9a-fA-F.:]+)|ipv4:(?P<ipv4Address>[0-9a-fA-F.:]+)|ipv6:"
r"(?P<ipv6Address>[0-9a-fA-F:]+))\)\s+(?P<version>\S+)\s*"
)
REGEX_SERVICES = re.compile(
r"(?P<service>\S+)\s+(?P<pid>[0-9]+)\s+(?P<machine>\S+)\s+(?P<connectedAt>.*)$"
)
[docs]class SMB_LockedFile(dict):
@property
def filename(self):
return self["filename"]
@property
def sharePath(self):
return self["sharePath"]
def __str__(self):
if self.filename == ".":
return self.sharePath
return self.filename
[docs]class SMB_Process(dict):
def __init__(self, args):
dict.__init__(self, args)
self._locked_files = []
self._services = []
@property
def username(self):
return self["username"]
@property
def pid(self):
return self["pid"]
@property
def machine(self):
return self["machine"]
@property
def lockedFiles(self):
return self._locked_files
@property
def services(self):
return self._services
@property
def ipv4address(self):
return self["ipv4Address"]
@property
def ipv6address(self):
return self["ipv6Address"]
@property
def ipaddress(self):
return self.get("ipAddress") or self.ipv4address or self.ipv6address
[docs] def update(self, dictionary):
if "sharePath" in dictionary:
self._locked_files.append(SMB_LockedFile(dictionary))
elif "service" in dictionary:
self._services.append(dictionary["service"])
else:
dict.update(self, dictionary)
def __str__(self):
title = "Process %(pid)s: User: %(username)s (group: %(group)s)" % self
files = " locked files: %s" % ", ".join(map(str, self.lockedFiles))
services = " services: %s" % ", ".join(self.services)
return "\n".join((title, files, services))
[docs]class SMB_Status(list):
def __init__(self, testdata=None):
list.__init__(self)
self.parse(testdata)
[docs] def parse(self, testdata=None):
while self:
self.pop()
if testdata is None:
smbstatus = subprocess.Popen( # nosec
["/usr/bin/smbstatus"], stdout=subprocess.PIPE, stderr=subprocess.PIPE
)
data = ["%s\n" % x for x in smbstatus.communicate()[0].decode("UTF-8").splitlines()]
else:
data = testdata
regexps = [REGEX_USERS, REGEX_SERVICES, REGEX_LOCKED_FILES]
regex = None
for line in data:
if line.startswith("-----"):
regex = regexps.pop(0)
if not line.strip() or regex is None:
continue
match = regex.match(line)
if match is None:
continue
serv = SMB_Process(match.groupdict())
self.update(serv)
for process in self[:]:
if "username" not in process:
ud.debug(
ud.PARSER,
ud.ERROR,
'Invalid SMB process definition (no "username"):\nprocess=%r\ndata=%s'
% (process, "".join(data)),
)
self.remove(process)
[docs] def update(self, service):
for item in self:
if item.pid == service.pid:
item.update(service)
break
else:
self.append(service)
if __name__ == "__main__":
import argparse
parser = argparse.ArgumentParser(
description="If no file is given, runs smbstatus and parses its output (Test data: "
"/usr/share/ucs-school-lib/smbstatus_testdata.txt)."
)
parser.add_argument("file", nargs="?", type=argparse.FileType("r"))
args = parser.parse_args()
ud.init("/var/log/univention/smbstatus.log", ud.NO_FLUSH, ud.NO_FUNCTION)
ud.set_level(ud.PARSER, ud.ALL)
if not args.file:
status = SMB_Status()
else:
status = SMB_Status(testdata=args.file.read().split("\n"))
for process in status:
print(str(process))
print("")
