check-opnsense/opnsense_checkmk_agent.py
2022-06-28 21:38:28 +02:00

1561 lines
72 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# vim: set fileencoding=utf-8:noet
## Copyright 2022 Bashclub
## BSD-2-Clause
##
## Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
##
## 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
##
## 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
## THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
## BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
## GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
## OPNsense CheckMK Agent
## to install
## copy to /usr/local/etc/rc.syshook.d/start/99-checkmk_agent and chmod +x
##
__VERSION__ = "0.952"
import sys
import os
import shlex
import glob
import re
import time
import json
import socket
import signal
import struct
import subprocess
import pwd
import threading
import ipaddress
import base64
import traceback
import syslog
import requests
from urllib3.connection import HTTPConnection
from urllib3.connectionpool import HTTPConnectionPool
from requests.adapters import HTTPAdapter
from cryptography import x509
from cryptography.hazmat.backends import default_backend as crypto_default_backend
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
from xml.etree import cElementTree as ELementTree
from collections import Counter,defaultdict
from pprint import pprint
from socketserver import TCPServer,StreamRequestHandler
SCRIPTPATH = os.path.abspath(os.path.basename(__file__))
if os.path.islink(SCRIPTPATH):
SCRIPTPATH = os.path.realpath(os.readlink(SCRIPTPATH))
BASEDIR = "/usr/local"
MK_CONFDIR = os.path.join(BASEDIR,"etc")
CHECKMK_CONFIG = os.path.join(MK_CONFDIR,"checkmk.conf")
LOCALDIR = os.path.join(BASEDIR,"local")
SPOOLDIR = os.path.join(BASEDIR,"spool")
class object_dict(defaultdict):
def __getattr__(self,name):
return self[name] if name in self else ""
def etree_to_dict(t):
d = {t.tag: {} if t.attrib else None}
children = list(t)
if children:
dd = object_dict(list)
for dc in map(etree_to_dict, children):
for k, v in dc.items():
dd[k].append(v)
d = {t.tag: {k:v[0] if len(v) == 1 else v for k, v in dd.items()}}
if t.attrib:
d[t.tag].update(('@' + k, v) for k, v in t.attrib.items())
if t.text:
text = t.text.strip()
if children or t.attrib:
if text:
d[t.tag]['#text'] = text
else:
d[t.tag] = text
return d
def log(message,prio="notice"):
priority = {
"crit" :syslog.LOG_CRIT,
"err" :syslog.LOG_ERR,
"warning" :syslog.LOG_WARNING,
"notice" :syslog.LOG_NOTICE,
"info" :syslog.LOG_INFO,
}.get(str(prio).lower(),syslog.LOG_DEBUG)
syslog.openlog(ident="checkmk_agent",logoption=syslog.LOG_PID | syslog.LOG_NDELAY,facility=syslog.LOG_DAEMON)
syslog.syslog(priority,message)
def pad_pkcs7(message,size=16):
_pad = size - (len(message) % size)
if type(message) == str:
return message + chr(_pad) * _pad
else:
return message + bytes([_pad]) * _pad
class NginxConnection(HTTPConnection):
def __init__(self):
super().__init__("localhost")
def connect(self):
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.sock.connect("/var/run/nginx_status.sock")
class NginxConnectionPool(HTTPConnectionPool):
def __init__(self):
super().__init__("localhost")
def _new_conn(self):
return NginxConnection()
class NginxAdapter(HTTPAdapter):
def get_connection(self, url, proxies=None):
return NginxConnectionPool()
def check_pid(pid):
try:
os.kill(pid,0)
return True
except OSError: ## no permission check currently root
return False
class checkmk_handler(StreamRequestHandler):
def handle(self):
with self.server._mutex:
try:
_strmsg = self.server.do_checks(remote_ip=self.client_address[0])
except Exception as e:
raise
_strmsg = str(e).encode("utf-8")
try:
self.wfile.write(_strmsg)
except:
pass
class checkmk_checker(object):
_certificate_timestamp = 0
_check_cache = {}
_datastore_mutex = threading.RLock()
_datastore = object_dict()
def encrypt(self,message,password='secretpassword'):
SALT_LENGTH = 8
KEY_LENGTH = 32
IV_LENGTH = 16
PBKDF2_CYCLES = 10_000
SALT = b"Salted__"
_backend = crypto_default_backend()
_kdf_key = PBKDF2HMAC(
algorithm = hashes.SHA256,
length = KEY_LENGTH + IV_LENGTH,
salt = SALT,
iterations = PBKDF2_CYCLES,
backend = _backend
).derive(password.encode("utf-8"))
_key, _iv = _kdf_key[:KEY_LENGTH],_kdf_key[KEY_LENGTH:]
_encryptor = Cipher(
algorithms.AES(_key),
modes.CBC(_iv),
backend = _backend
).encryptor()
message = pad_pkcs7(message)
message = message.encode("utf-8")
_encrypted_message = _encryptor.update(message) + _encryptor.finalize()
return pad_pkcs7(b"03",10) + SALT + _encrypted_message
def _encrypt(self,message): ## openssl ## todo ## remove
_cmd = shlex.split('openssl enc -aes-256-cbc -md sha256 -iter 10000 -k "secretpassword"',posix=True)
_proc = subprocess.Popen(_cmd,stderr=subprocess.DEVNULL,stdout=subprocess.PIPE,stdin=subprocess.PIPE)
_out,_err = _proc.communicate(input=message.encode("utf-8"))
return b"03" + _out
def do_checks(self,debug=False,remote_ip=None,**kwargs):
self._getosinfo()
_errors = []
_failed_sections = []
_lines = ["<<<check_mk>>>"]
_lines.append("AgentOS: {os}".format(**self._info))
_lines.append(f"Version: {__VERSION__}")
_lines.append("Hostname: {hostname}".format(**self._info))
if self.onlyfrom:
_lines.append("OnlyFrom: {0}".format(",".join(self.onlyfrom)))
_lines.append(f"LocalDirectory: {LOCALDIR}")
_lines.append(f"AgentDirectory: {MK_CONFDIR}")
_lines.append(f"SpoolDirectory: {SPOOLDIR}")
for _check in dir(self):
if _check.startswith("check_"):
_name = _check.split("_",1)[1]
if _name in self.skipcheck:
continue
try:
_lines += getattr(self,_check)()
except:
_failed_sections.append(_name)
_errors.append(traceback.format_exc())
_lines.append("<<<local:sep(0)>>>")
for _check in dir(self):
if _check.startswith("checklocal_"):
_name = _check.split("_",1)[1]
if _name in self.skipcheck:
continue
try:
_lines += getattr(self,_check)()
except:
_failed_sections.append(_name)
_errors.append(traceback.format_exc())
if os.path.isdir(LOCALDIR):
for _local_file in glob.glob(f"{LOCALDIR}/**",recursive=True):
if os.path.isfile(_local_file) and os.access(_local_file,os.X_OK):
try:
_cachetime = int(_local_file.split(os.path.sep)[-2])
except:
_cachetime = 0
try:
_lines.append(self._run_cache_prog(_local_file,_cachetime))
except:
_errors.append(traceback.format_exc())
if os.path.isdir(SPOOLDIR):
_now = time.time()
for _filename in glob.glob(f"{SPOOLDIR}/*"):
_maxage = re.search("^\d+",_filename)
if _maxage:
_maxage = int(_maxage.group())
_mtime = os.stat(_filename).st_mtime
if _now - _mtime > _maxage:
continue
with open(_filename) as _f:
_lines.append(_f.read())
_lines.append("")
if debug:
sys.stdout.write("\n".join(_errors))
sys.stdout.flush()
if _failed_sections:
_lines.append("<<<check_mk>>>")
_lines.append("FailedPythonPlugins: {0}".format(",".join(_failed_sections)))
if self.encryptionkey:
return self.encrypt("\n".join(_lines),password=self.encryptionkey)
return "\n".join(_lines).encode("utf-8")
def _get_storedata(self,section,key):
with self._datastore_mutex:
return self._datastore.get(section,{}).get(key)
def _set_storedata(self,section,key,value):
with self._datastore_mutex:
if section not in self._datastore:
self._datastore[section] = object_dict()
self._datastore[section][key] = value
def _getosinfo(self):
_info = json.load(open("/usr/local/opnsense/version/core","r"))
_changelog = json.load(open("/usr/local/opnsense/changelog/index.json","r"))
_config_modified = os.stat("/conf/config.xml").st_mtime
try:
_latest_firmware = list(filter(lambda x: x.get("series") == _info.get("product_series"),_changelog))[-1]
_current_firmware = list(filter(lambda x: x.get("version") == _info.get("product_version").split("_")[0],_changelog))[0].copy() ## not same
_current_firmware["age"] = int(time.time() - time.mktime(time.strptime(_current_firmware.get("date"),"%B %d, %Y")))
_current_firmware["version"] = _info.get("product_version")
except:
raise
_lastest_firmware = {}
_current_firmware = {}
try:
_upgrade_json = json.load(open("/tmp/pkg_upgrade.json","r"))
_upgrade_packages = dict(map(lambda x: (x.get("name"),x),_upgrade_json.get("upgrade_packages")))
_current_firmware["version"] = _upgrade_packages.get("opnsense").get("current_version")
_latest_firmware["version"] = _upgrade_packages.get("opnsense").get("new_version")
except:
_current_firmware["version"] = _current_firmware["version"].split("_")[0]
_latest_firmware["version"] = _current_firmware["version"] ## fixme ## no upgradepckg error on opnsense ... no new version
self._info = {
"os" : _info.get("product_name"),
"os_version" : _current_firmware.get("version"),
"version_age" : _current_firmware.get("age",0),
"config_age" : int(time.time() - _config_modified) ,
"last_configchange" : time.strftime("%H:%M %d.%m.%Y",time.localtime(_config_modified)),
"product_series" : _info.get("product_series"),
"latest_version" : _latest_firmware.get("version"),
"latest_date" : _latest_firmware.get("date"),
"hostname" : self._run_prog("hostname").strip(" \n")
}
@staticmethod
def ip2int(ipaddr):
return struct.unpack("!I",socket.inet_aton(ipaddr))[0]
@staticmethod
def int2ip(intaddr):
return socket.inet_ntoa(struct.pack("!I",intaddr))
def pidof(self,prog,default=None):
_allprogs = re.findall("(\w+)\s+(\d+)",self._run_prog("ps ax -c -o command,pid"))
return int(dict(_allprogs).get(prog,default))
def _config_reader(self,config=""):
_config = ELementTree.parse("/conf/config.xml")
_root = _config.getroot()
return etree_to_dict(_root).get("opnsense",{})
@staticmethod
def get_common_name(certrdn):
try:
return next(filter(lambda x: x.oid == x509.oid.NameOID.COMMON_NAME,certrdn)).value.strip()
except:
return str(certrdn)
def _certificate_parser(self):
self._certificate_timestamp = time.time()
self._certificate_store = {}
for _cert in self._config_reader().get("cert"):
try:
_certpem = base64.b64decode(_cert.get("crt"))
_x509cert = x509.load_pem_x509_certificate(_certpem,crypto_default_backend())
_cert["not_valid_before"] = _x509cert.not_valid_before.timestamp()
_cert["not_valid_after"] = _x509cert.not_valid_after.timestamp()
_cert["serial"] = _x509cert.serial_number
_cert["common_name"] = self.get_common_name(_x509cert.subject)
_cert["issuer"] = self.get_common_name(_x509cert.issuer)
except:
pass
self._certificate_store[_cert.get("refid")] = _cert
def _get_certificate(self,refid):
if time.time() - self._certificate_timestamp > 3600:
self._certificate_parser()
return self._certificate_store.get(refid)
def _get_certificate_by_cn(self,cn,caref=None):
if time.time() - self._certificate_timestamp > 3600:
self._certificate_parser()
if caref:
_ret = filter(lambda x: x.get("common_name") == cn and x.get("caref") == caref,self._certificate_store.values())
else:
_ret = filter(lambda x: x.get("common_name") == cn,self._certificate_store.values())
try:
return next(_ret)
except StopIteration:
return {}
def get_opnsense_ipaddr(self):
try:
_ret = {}
for _if,_ip,_mask in re.findall("^([\w_]+):\sflags=(?:8943|8051|8043|8863).*?inet\s([\d.]+)\snetmask\s0x([a-f0-9]+)",self._run_prog("ifconfig"),re.DOTALL | re.M):
_ret[_if] = "{0}/{1}".format(_ip,str(bin(int(_mask,16))).count("1"))
return _ret
except:
return {}
def _get_opnsense_ipaddr(self):
RE_IPDATA = re.compile("(?P<inet>inet6?)\s(?P<ip>[\da-f:.]+)\/(?P<cidr>\d+).*?(?:vhid\s(?P<vhid>\d+)|$)|carp:\s(?P<carp_status>MASTER|BACKUP)\svhid\s(?P<carp_vhid>\d+)\sadvbase\s(?P<carp_base>\d+)\sadvskew\s(?P<carp_skew>\d)|(vlan):\s(?P<vlan>\d*)",re.DOTALL | re.M)
try:
_ret = {}
for _if,_data in re.findall("([\w_]+):\s(.*?)\n(?=(?:\w|$))",self._run_prog("ifconfig -f inet:cidr,inet6:cidr"),re.DOTALL | re.M):
_ret[_if] = RE_IPDATA.search(_data).groups()
return _ret
except:
return {}
def get_opnsense_interfaces(self):
_ifs = {}
#pprint(self._config_reader().get("interfaces"))
#sys.exit(0)
for _name,_interface in self._config_reader().get("interfaces",{}).items():
if _interface.get("enable") != "1":
continue
_desc = _interface.get("descr")
_ifs[_interface.get("if","_")] = _desc if _desc else _name.upper()
try:
_wgserver = self._config_reader().get("OPNsense").get("wireguard").get("server").get("servers").get("server")
if type(_wgserver) == dict:
_wgserver = [_wgserver]
_ifs.update(
dict(
map(
lambda x: ("wg{}".format(x.get("instance")),"Wireguard_{}".format(x.get("name").strip().replace(" ","_"))),
_wgserver
)
)
)
except:
pass
return _ifs
def checklocal_firmware(self):
if self._info.get("os_version") != self._info.get("latest_version"):
return ["1 Firmware update_available=1|last_updated={version_age:.0f}|apply_finish_time={config_age:.0f} Version {os_version} ({latest_version} available {latest_date}) Config changed: {last_configchange}".format(**self._info)]
return ["0 Firmware update_available=0|last_updated={version_age:.0f}|apply_finish_time={config_age:.0f} Version {os_version} Config changed: {last_configchange}".format(**self._info)]
def check_label(self):
_ret = ["<<<labels:sep(0)>>>"]
_dmsg = self._run_prog("dmesg",timeout=10)
if _dmsg.lower().find("hypervisor:") > -1:
_ret.append('{"cmk/device_type":"vm"}')
return _ret
def check_net(self):
_now = int(time.time())
_opnsense_ifs = self.get_opnsense_interfaces()
_ret = ["<<<statgrab_net>>>"]
_interface_data = []
_interface_data = self._run_prog("/usr/bin/netstat -i -b -d -n -W -f link").split("\n")
_header = _interface_data[0].lower()
_header = _header.replace("pkts","packets").replace("coll","collisions").replace("errs","error").replace("ibytes","rx").replace("obytes","tx")
_header = _header.split()
_interface_stats = dict(
map(
lambda x: (x.get("name"),x),
[
dict(zip(_header,_ifdata.split()))
for _ifdata in _interface_data[1:] if _ifdata
]
)
)
_ifconfig_out = self._run_prog("ifconfig -m -v -f inet:cidr,inet6:cidr")
_ifconfig_out += "END" ## fix regex
self._all_interfaces = object_dict()
self._carp_interfaces = object_dict()
for _interface, _data in re.findall("^(?P<iface>[\w.]+):\s(?P<data>.*?(?=^\w))",_ifconfig_out,re.DOTALL | re.MULTILINE):
_interface_dict = object_dict()
_interface_dict.update(_interface_stats.get(_interface,{}))
_interface_dict["interface_name"] = _opnsense_ifs.get(_interface,_interface)
_interface_dict["up"] = "false"
#if _interface.startswith("vmx"): ## vmware fix 10GBe (as OS Support)
# _interface_dict["speed"] = "10000"
_interface_dict["systime"] = _now
for _key, _val in re.findall("^\s*(\w+)[:\s=]+(.*?)$",_data,re.MULTILINE):
if _key == "description":
_interface_dict["interface_name"] = _val.strip().replace(" ","_")
if _key == "groups":
_interface_dict["groups"] = _val.strip().split()
if _key == "ether":
_interface_dict["phys_address"] = _val.strip()
if _key == "status" and _val.strip() == "active":
_interface_dict["up"] = "true"
if _key == "flags":
_interface_dict["flags"] = int(re.findall("^[a-f\d]+",_val)[0],16)
## 0x1 UP
## 0x2 BROADCAST
## 0x8 LOOPBACK
## 0x10 POINTTOPOINT
## 0x40 RUNNING
## 0x100 PROMISC
## 0x800 SIMPLEX
## 0x8000 MULTICAST
if _key == "media":
_match = re.search("\((?P<speed>\d+G?)base(?:.*?<(?P<duplex>.*?)>)?",_val)
if _match:
_interface_dict["speed"] = _match.group("speed").replace("G","000")
_interface_dict["duplex"] = _match.group("duplex")
if _key == "inet":
_match = re.search("^(?P<ipaddr>[\d.]+)\/(?P<cidr>\d+).*?(?:vhid\s(?P<vhid>\d+)|$)",_val,re.M)
if _match:
_cidr = _match.group("cidr")
_ipaddr = _match.group("ipaddr")
_vhid = _match.group("vhid")
if not _vhid:
_interface_dict["cidr"] = _cidr ## cidr wenn kein vhid
## fixme ipaddr dict / vhid dict
if _key == "inet6":
_match = re.search("^(?P<ipaddr>[0-9a-f:]+)\/(?P<prefix>\d+).*?(?:vhid\s(?P<vhid>\d+)|$)",_val,re.M)
if _match:
_ipaddr = _match.group("ipaddr")
_prefix = _match.group("prefix")
_vhid = _match.group("vhid")
if not _vhid:
_interface_dict["prefix"] = _prefix
## fixme ipaddr dict / vhid dict
if _key == "carp":
_match = re.search("(?P<status>MASTER|BACKUP)\svhid\s(?P<vhid>\d+)\sadvbase\s(?P<base>\d+)\sadvskew\s(?P<skew>\d+)",_val,re.M)
if _match:
_carpstatus = _match.group("status")
_vhid = _match.group("vhid")
self._carp_interfaces[_vhid] = (_interface,_carpstatus)
_advbase = _match.group("base")
_advskew = _match.group("skew")
## fixme vhid dict
if _key == "id":
_match = re.search("priority\s(\d+)",_val)
if _match:
_interface_dict["bridge_prio"] = _match.group(1)
if _key == "member":
_member = _interface_dict.get("member",[])
_member.append(_val.split()[0])
_interface_dict["member"] = _member
if _key == "Opened":
try:
_pid = int(_val.split(" ")[-1])
if check_pid(_pid):
_interface_dict["up"] = "true"
except ValueError:
pass
if _interface_dict["flags"] & 0x2 or _interface_dict["flags"] & 0x10: ## nur broadcast oder ptp
self._all_interfaces[_interface] = _interface_dict
else:
continue
#if re.search("^[*]?(pflog|pfsync|lo)\d?",_interface):
# continue
if not _opnsense_ifs.get(_interface):
continue
for _key,_val in _interface_dict.items():
if _key in ("mtu","ipackets","ierror","idrop","rx","opackets","oerror","tx","collisions","drop","interface_name","up","systime","phys_address","speed","duplex"):
if type(_val) in (str,int,float):
_ret.append(f"{_interface}.{_key} {_val}")
return _ret
def checklocal_services(self):
_phpcode = '<?php require_once("config.inc");require_once("system.inc"); require_once("plugins.inc"); require_once("util.inc"); foreach(plugins_services() as $_service) { printf("%s;%s;%s\n",$_service["name"],$_service["description"],service_status($_service));} ?>'
_proc = subprocess.Popen(["php"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL,encoding="utf-8")
_data,_ = _proc.communicate(input=_phpcode,timeout=15)
_services = []
for _service in _data.strip().split("\n"):
_services.append(_service.split(";"))
_num_services = len(_services)
_stopped_services = list(filter(lambda x: x[2] != '1',_services))
_num_stopped = len(_stopped_services)
_num_running = _num_services - _num_stopped
_stopped_services = ", ".join(map(lambda x: x[1],_stopped_services))
if _num_stopped > 0:
return [f"2 Services running_services={_num_running:.0f}|stopped_service={_num_stopped:.0f} Services: {_stopped_services} not running"]
return [f"0 Services running_services={_num_running:.0f}|stopped_service={_num_stopped:.0f} All Services running"]
def checklocal_carpstatus(self):
_ret = []
_virtual = self._config_reader().get("virtualip")
if not _virtual:
return []
_virtual = _virtual.get("vip")
if not _virtual:
return []
if type(_virtual) != list:
_virtual = [_virtual]
for _vip in _virtual:
if _vip.get("mode") != "carp":
continue
_vhid = _vip.get("vhid")
_ipaddr = _vip.get("subnet")
_interface, _carpstatus = self._carp_interfaces.get(_vhid,(None,None))
_carpstatus_num = 1 if _carpstatus == "MASTER" else 0
_interface_name = self._all_interfaces.get(_interface,{}).get("interface_name",_interface)
if int(_vip.get("advskew")) < 50:
_status = 0 if _carpstatus == "MASTER" else 1
else:
_status = 0 if _carpstatus == "BACKUP" else 1
if not _interface:
continue
_ret.append(f"{_status} \"CARP: {_interface_name}@{_vhid}\" master={_carpstatus_num} {_carpstatus} {_ipaddr} ({_interface})")
return _ret
def check_dhcp(self):
_ret = ["<<<isc_dhcpd>>>"]
_ret.append("[general]\nPID: {0}".format(self.pidof("dhcpd",-1)))
_dhcpleases = open("/var/dhcpd/var/db/dhcpd.leases","r").read()
## FIXME
#_dhcpleases_dict = dict(map(lambda x: (self.ip2int(x[0]),x[1]),re.findall(r"lease\s(?P<ipaddr>[0-9.]+)\s\{.*?.\n\s+binding state\s(?P<state>\w+).*?\}",_dhcpleases,re.DOTALL)))
_dhcpleases_dict = dict(re.findall(r"lease\s(?P<ipaddr>[0-9.]+)\s\{.*?.\n\s+binding state\s(?P<state>active).*?\}",_dhcpleases,re.DOTALL))
_dhcpconf = open("/var/dhcpd/etc/dhcpd.conf","r").read()
_ret.append("[pools]")
for _subnet in re.finditer(r"subnet\s(?P<subnet>[0-9.]+)\snetmask\s(?P<netmask>[0-9.]+)\s\{.*?(?:pool\s\{.*?\}.*?)*}",_dhcpconf,re.DOTALL):
#_cidr = bin(self.ip2int(_subnet.group(2))).count("1")
#_available = 0
for _pool in re.finditer("pool\s\{.*?range\s(?P<start>[0-9.]+)\s(?P<end>[0-9.]+).*?\}",_subnet.group(0),re.DOTALL):
#_start,_end = self.ip2int(_pool.group(1)), self.ip2int(_pool.group(2))
#_ips_in_pool = filter(lambda x: _start < x[0] < _end,_dhcpleases_dict.items())
#pprint(_dhcpleases_dict)
#pprint(sorted(list(map(lambda x: (self._int2ip(x[0]),x[1]),_ips_in_pool))))
#_available += (_end - _start)
_ret.append("{0}\t{1}".format(_pool.group(1),_pool.group(2)))
#_ret.append("DHCP_{0}/{1} {2}".format(_subnet.group(1),_cidr,_available))
_ret.append("[leases]")
for _ip in sorted(_dhcpleases_dict.keys()):
_ret.append(_ip)
return _ret
def checklocal_pkgaudit(self):
try:
_data = json.loads(self._run_cache_prog("pkg audit -F --raw=json-compact -q",cachetime=360,ignore_error=True))
_vulns = _data.get("pkg_count",0)
if _vulns > 0:
_packages = ", ".join(_data.get("packages",{}).keys())
return [f"1 Audit issues={_vulns} Pkg: {_packages} vulnerable"]
raise
except:
pass
return ["0 Audit issues=0 OK"]
@staticmethod
def _read_from_openvpnsocket(vpnsocket,cmd):
_sock = socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)
try:
_sock.connect(vpnsocket)
assert (_sock.recv(4096).decode("utf-8")).startswith(">INFO")
cmd = cmd.strip() + "\n"
_sock.send(cmd.encode("utf-8"))
_data = ""
while True:
_socket_data = _sock.recv(4096).decode("utf-8")
_data += _socket_data
if _data.strip().endswith("END") or _data.strip().startswith("SUCCESS:") or _data.strip().startswith("ERROR:"):
break
return _data
finally:
if _sock:
_sock.send("quit\n".encode("utf-8"))
_sock.close()
_sock = None
return ""
def _get_traffic(self,modul,interface,totalbytesin,totalbytesout):
_hist_data = self._get_storedata(modul,interface)
_slot = int(time.time())
_slot -= _slot%60
_hist_slot = 0
_traffic_in = _traffic_out = 0
if _hist_data:
_hist_slot,_hist_bytesin, _hist_bytesout = _hist_data
_traffic_in = int(totalbytesin -_hist_bytesin) / max(1,_slot - _hist_slot)
_traffic_out = int(totalbytesout - _hist_bytesout) / max(1,_slot - _hist_slot)
if _hist_slot != _slot:
self._set_storedata(modul,interface,(_slot,totalbytesin,totalbytesout))
return _traffic_in,_traffic_out
@staticmethod
def _get_dpinger_gateway(gateway):
_path = "/var/run/dpinger_{0}.sock".format(gateway)
if os.path.exists(_path):
_sock = socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)
try:
_sock.connect(_path)
_data = _sock.recv(1024).decode("utf-8").strip()
_name, _rtt, _rttsd, _loss = re.findall("(\w+)\s(\d+)\s(\d+)\s(\d+)$",_data)[0]
assert _name.strip() == gateway
return int(_rtt)/1_000_000.0,int(_rttsd)/1_000_000.0, int(_loss)
except:
raise
return -1,-1,-1
def checklocal_gateway(self):
_ret = []
_gateways = self._config_reader().get("gateways")
if not _gateways:
return []
_gateway_items = _gateways.get("gateway_item",[])
if type(_gateway_items) != list:
_gateway_items = [_gateway_items] if _gateway_items else []
_interfaces = self._config_reader().get("interfaces",{})
_ipaddresses = self.get_opnsense_ipaddr()
for _gateway in _gateway_items:
if type(_gateway.get("descr")) != str:
_gateway["descr"] = _gateway.get("name")
if _gateway.get("monitor_disable") == "1" or _gateway.get("disabled") == "1":
continue
_interface = _interfaces.get(_gateway.get("interface"),{})
_gateway["realinterface"] = _interface.get("if")
if _gateway.get("ipprotocol") == "inet":
_gateway["ipaddr"] = _ipaddresses.get(_interface.get("if"))
else:
_gateway["ipaddr"] = ""
_gateway["rtt"], _gateway["rttsd"], _gateway["loss"] = self._get_dpinger_gateway(_gateway.get("name"))
_gateway["status"] = 0
if _gateway.get("loss") > 0 or _gateway.get("rtt") > 100:
_gateway["status"] = 1
if _gateway.get("loss") > 90 or _gateway.get("loss") == -1:
_gateway["status"] = 2
_ret.append("{status} \"Gateway {descr}\" rtt={rtt}|rttsd={rttsd}|loss={loss} Gateway on Interface: {realinterface} {gateway}".format(**_gateway))
return _ret
def checklocal_openvpn(self):
_ret = []
_cfr = self._config_reader().get("openvpn")
if type(_cfr) != dict:
return _ret
_cso = _cfr.get("openvpn-csc")
_monitored_clients = {}
if type(_cso) == dict:
_cso = [_cso]
if type(_cso) == list:
_monitored_clients = dict(map(lambda x: (x.get("common_name").upper(),dict(x,current=[])),_cso))
_now = time.time()
_vpnclient = _cfr.get("openvpn-client",[])
_vpnserver = _cfr.get("openvpn-server",[])
if type(_vpnserver) != list:
_vpnserver = [_vpnserver] if _vpnserver else []
if type(_vpnclient) != list:
_vpnclient = [_vpnclient] if _vpnclient else []
for _server in _vpnserver + _vpnclient:
## server_tls, p2p_shared_key p2p_tls
_server["name"] = _server.get("description").strip() if _server.get("description") else "OpenVPN_{protocoll}_{local_port}".format(**_server)
_caref = _server.get("caref")
_server_cert = self._get_certificate(_server.get("certref"))
_server["status"] = 3
_server["expiredays"] = 0
_server["expiredate"] = "no certificate found"
if _server_cert:
_notvalidafter = _server_cert.get("not_valid_after",0)
_server["expiredays"] = int((_notvalidafter - _now) / 86400)
_server["expiredate"] = time.strftime("Cert Expire: %d.%m.%Y",time.localtime(_notvalidafter))
if _server["expiredays"] < 61:
_server["status"] = 2 if _server["expiredays"] < 31 else 1
else:
_server["expiredate"] = "\\n" + _server["expiredate"]
_server["type"] = "server" if _server.get("local_port") else "client"
if _server.get("mode") in ("p2p_shared_key","p2p_tls"):
_unix = "/var/etc/openvpn/{type}{vpnid}.sock".format(**_server)
try:
_server["bytesin"], _server["bytesout"] = self._get_traffic("openvpn",
"SRV_{name}".format(**_server),
*(map(lambda x: int(x),re.findall("bytes\w+=(\d+)",self._read_from_openvpnsocket(_unix,"load-stats"))))
)
_laststate = self._read_from_openvpnsocket(_unix,"state 1").strip().split("\r\n")[-2]
_timestamp, _server["connstate"], _data = _laststate.split(",",2)
if _server["connstate"] == "CONNECTED":
_data = _data.split(",")
_server["vpn_ipaddr"] = _data[1]
_server["remote_ipaddr"] = _data[2]
_server["remote_port"] = _data[3]
_server["source_addr"] = _data[4]
_server["status"] = 0 if _server["status"] == 3 else _server["status"]
_ret.append('{status} "OpenVPN Connection: {name}" connections_ssl_vpn=1;;|if_in_octets={bytesin}|if_out_octets={bytesout}|expiredays={expiredays} Connected {remote_ipaddr}:{remote_port} {vpn_ipaddr} {expiredate}\Source IP: {source_addr}'.format(**_server))
else:
if _server["type"] == "client":
_server["status"] = 2
_ret.append('{status} "OpenVPN Connection: {name}" connections_ssl_vpn=0;;|if_in_octets={bytesin}|if_out_octets={bytesout}|expiredays={expiredays} {connstate} {expiredate}'.format(**_server))
else:
_server["status"] = 1 if _server["status"] != 2 else 2
_ret.append('{status} "OpenVPN Connection: {name}" connections_ssl_vpn=0;;|if_in_octets={bytesin}|if_out_octets={bytesout}|expiredays={expiredays} waiting on Port {local_port}/{protocol} {expiredate}'.format(**_server))
except:
_ret.append('2 "OpenVPN Connection: {name}" connections_ssl_vpn=0;;|expiredays={expiredays}|if_in_octets=0|if_out_octets=0 Server down Port:/{protocol} {expiredate}'.format(**_server))
continue
else:
if not _server.get("maxclients"):
_max_clients = ipaddress.IPv4Network(_server.get("tunnel_network")).num_addresses -2
if _server.get("topology_subnet") != "yes":
_max_clients = max(1,int(_max_clients/4)) ## p2p
_server["maxclients"] = _max_clients
try:
_unix = "/var/etc/openvpn/{type}{vpnid}.sock".format(**_server)
try:
_server["bytesin"], _server["bytesout"] = self._get_traffic("openvpn",
"SRV_{name}".format(**_server),
*(map(lambda x: int(x),re.findall("bytes\w+=(\d+)",self._read_from_openvpnsocket(_unix,"load-stats"))))
)
_server["status"] = 0 if _server["status"] == 3 else _server["status"]
except:
_server["bytesin"], _server["bytesout"] = 0,0
raise
_number_of_clients = 0
_now = int(time.time())
_response = self._read_from_openvpnsocket(_unix,"status 2")
for _client_match in re.finditer("^CLIENT_LIST,(.*?)$",_response,re.M):
_number_of_clients += 1
_client_raw = list(map(lambda x: x.strip(),_client_match.group(1).split(",")))
_client = {
"server" : _server.get("name"),
"common_name" : _client_raw[0],
"remote_ip" : _client_raw[1].split(":")[0],
"vpn_ip" : _client_raw[2],
"vpn_ipv6" : _client_raw[3],
"bytes_received" : int(_client_raw[4]),
"bytes_sent" : int(_client_raw[5]),
"uptime" : _now - int(_client_raw[7]),
"username" : _client_raw[8] if _client_raw[8] != "UNDEF" else _client_raw[0],
"clientid" : int(_client_raw[9]),
"cipher" : _client_raw[11].strip("\r\n")
}
if _client["username"].upper() in _monitored_clients:
_monitored_clients[_client["username"].upper()]["current"].append(_client)
_server["clientcount"] = _number_of_clients
_ret.append('{status} "OpenVPN Server: {name}" connections_ssl_vpn={clientcount};;{maxclients}|if_in_octets={bytesin}|if_out_octets={bytesout}|expiredays={expiredays} {clientcount}/{maxclients} Connections Port:{local_port}/{protocol} {expiredate}'.format(**_server))
except:
_ret.append('2 "OpenVPN Server: {name}" connections_ssl_vpn=0;;{maxclients}|expiredays={expiredays}|if_in_octets=0|if_out_octets=0| Server down Port:{local_port}/{protocol} {expiredate}'.format(**_server))
for _client in _monitored_clients.values():
_current_conn = _client.get("current",[])
if not _client.get("description"):
_client["description"] = _client.get("common_name")
_client["description"] = _client["description"].strip(" \r\n")
_client["expiredays"] = 0
_client["expiredate"] = "no certificate found"
_client["status"] = 3
_cert = self._get_certificate_by_cn(_client.get("common_name"))
if _cert:
_notvalidafter = _cert.get("not_valid_after")
_client["expiredays"] = int((_notvalidafter - _now) / 86400)
_client["expiredate"] = time.strftime("Cert Expire: %d.%m.%Y",time.localtime(_notvalidafter))
if _client["expiredays"] < 61:
_client["status"] = 2 if _client["expiredays"] < 31 else 1
else:
_client["expiredate"] = "\\n" + _client["expiredate"]
if _current_conn:
_client["uptime"] = max(map(lambda x: x.get("uptime"),_current_conn))
_client["count"] = len(_current_conn)
_client["bytes_received"], _client["bytes_sent"] = self._get_traffic("openvpn",
"CL_{description}".format(**_client),
sum(map(lambda x: x.get("bytes_received"),_current_conn)),
sum(map(lambda x: x.get("bytes_sent"),_current_conn))
)
_client["status"] = 0 if _client["status"] == 3 else _client["status"]
_client["longdescr"] = ""
for _conn in _current_conn:
_client["longdescr"] += "Server:{server} {remote_ip}:{vpn_ip} {cipher} ".format(**_conn)
_ret.append('{status} "OpenVPN Client: {description}" connectiontime={uptime}|connections_ssl_vpn={count}|if_in_octets={bytes_received}|if_out_octets={bytes_sent}|expiredays={expiredays} {longdescr} {expiredate}'.format(**_client))
else:
_ret.append('{status} "OpenVPN Client: {description}" connectiontime=0|connections_ssl_vpn=0|if_in_octets=0|if_out_octets=0|expiredays={expiredays} Nicht verbunden {expiredate}'.format(**_client))
return _ret
def checklocal_ipsec(self):
_ret = []
_ipsec_config = self._config_reader().get("ipsec")
if type(_ipsec_config) != dict:
return []
_phase1config = _ipsec_config.get("phase1")
if type(_phase1config) != list:
_phase1config = [_phase1config]
_json_data = self._run_prog("/usr/local/opnsense/scripts/ipsec/list_status.py")
if len(_json_data.strip()) < 20:
return []
for _conid,_con in json.loads(_json_data).items():
_conid = _conid[3:]
try:
_config = next(filter(lambda x: x.get("ikeid") == _conid,_phase1config))
except StopIteration:
continue
_childsas = None
_con["status"] = 2
_con["bytes_received"] = 0
_con["bytes_sent"] = 0
_con["remote-host"] = "unknown"
for _sas in _con.get("sas",[]):
_con["state"] = _sas.get("state","unknown")
if not _con["local-id"]:
_con["status"] = 1
_con["state"] = "ABANDOMED"
_con["local-id"] = _sas.get("local-id")
if not _con["remote-id"]:
_con["status"] = 1
_con["remote-id"] = _sas.get("remote-id")
_con["state"] = "ABANDOMED"
_childsas = filter(lambda x: x.get("state") == "INSTALLED",_sas.get("child-sas").values())
_con["remote-name"] = _config.get("descr",_con.get("remote-id"))
try:
_childsas = next(_childsas)
_con["remote-host"] = _sas.get("remote-host")
_connecttime = max(1,int(_childsas.get("install-time",0)))
_con["bytes_received"] = int(int(_childsas.get("bytes-in",0)) /_connecttime)
_con["bytes_sent"] = int(int(_childsas.get("bytes-out",0)) / _connecttime)
_con["life-time"] = int(_childsas.get("life-time",0))
_con["status"] = 0 if _con["status"] == 2 else 1
break
except StopIteration:
pass
try:
if _childsas:
_ret.append("{status} \"IPsec Tunnel: {remote-name}\" if_in_octets={bytes_received}|if_out_octets={bytes_sent}|lifetime={life-time} {state} {local-id} - {remote-id}({remote-host})".format(**_con))
else:
_ret.append("{status} \"IPsec Tunnel: {remote-name}\" if_in_octets=0|if_out_octets=0|lifetime=0 not connected {local-id} - {remote-id}({remote-host})".format(**_con))
except KeyError: ##fixme error melden
continue
return _ret
def checklocal_wireguard(self):
_ret = []
try:
_clients = self._config_reader().get("OPNsense").get("wireguard").get("client").get("clients").get("client")
if type(_clients) != list:
_clients = [_clients] if _clients else []
_clients = dict(map(lambda x: (x.get("pubkey"),x),_clients))
except:
return []
_now = time.time()
for _client in _clients.values(): ## fill defaults
_client["interface"] = ""
_client["endpoint"] = ""
_client["last_handshake"] = 0
_client["bytes_received"] = 0
_client["bytes_sent"] = 0
_client["status"] = 2
_dump = self._run_prog(["wg","show","all","dump"]).strip()
for _line in _dump.split("\n"):
_values = _line.split("\t")
if len(_values) != 9:
continue
_client = _clients.get(_values[1].strip())
if not _client:
continue
_client["interface"] = _values[0].strip()
_client["endpoint"] = _values[3].strip().split(":")[0]
_client["last_handshake"] = int(_values[5].strip())
_client["bytes_received"], _client["bytes_sent"] = self._get_traffic("wireguard","",int(_values[6].strip()),int(_values[7].strip()))
_client["status"] = 2 if _now - _client["last_handshake"] > 300 else 0 ## 5min timeout
for _client in _clients.values():
if _client.get("status") == 2 and _client.get("endpoint") != "":
_client["endpoint"] = "last IP:" + _client["endpoint"]
_ret.append('{status} "WireGuard Client: {name}" if_in_octets={bytes_received}|if_out_octets={bytes_sent} {interface}: {endpoint} - {tunneladdress}'.format(**_client))
return _ret
def checklocal_unbound(self):
_ret = []
try:
_output = self._run_prog(["/usr/local/sbin/unbound-control", "-c", "/var/unbound/unbound.conf", "stats_noreset"])
_unbound_stat = dict(
map(
lambda x: (x[0].replace(".","_"),float(x[1])),
re.findall("total\.([\w.]+)=([\d.]+)",_output)
)
)
_ret.append("0 \"Unbound DNS\" dns_successes={num_queries:.0f}|dns_recursion={num_recursivereplies:.0f}|dns_cachehits={num_cachehits:.0f}|dns_cachemiss={num_cachemiss:.0f}|avg_response_time={recursion_time_avg} Unbound running".format(**_unbound_stat))
except:
_ret.append("2 \"Unbound DNS\" dns_successes=0|dns_recursion=0|dns_cachehits=0|dns_cachemiss=0|avg_response_time=0 Unbound not running")
return _ret
def checklocal_acmeclient(self):
_ret = []
_now = time.time()
try:
_acmecerts = self._config_reader().get("OPNsense").get("AcmeClient").get("certificates").get("certificate")
if type(_acmecerts) == dict:
_acmecerts = [_acmecerts]
except:
_acmecerts = []
for _cert_info in _acmecerts:
if _cert_info.get("enabled") != "1":
continue
if not _cert_info.get("description"):
_cert_info["description"] = _cert_info.get("name","unknown")
_certificate = self._get_certificate(_cert_info.get("certRefId"))
_cert_info["status"] = 1
if _certificate:
if type(_certificate) != dict:
_certificate = {}
_expiredays = _certificate.get("not_valid_after",_now) - _now
_not_valid_before = _certificate.get("not_valid_before",_cert_info.get("lastUpdate"))
_certificate_age = _now - int(_not_valid_before if _not_valid_before else _now)
_cert_info["age"] = int(_certificate_age)
if _cert_info.get("statusCode") == "200":
if _certificate_age > float(_cert_info.get("renewInterval","inf")):
_cert_info["status"] = 0
if _expiredays < 10:
_cert_info["status"] = 2
_cert_info["issuer"] = _certificate.get("issuer")
_cert_info["lastupdatedate"] = time.strftime("%d.%m.%Y",time.localtime(int(_cert_info.get("lastUpdate",0))))
_cert_info["expiredate"] = time.strftime("%d.%m.%Y",time.localtime(_certificate.get("not_valid_after",0)))
_ret.append("{status} \"ACME Cert: {description}\" age={age} Last Update: {lastupdatedate} Status: {statusCode} Cert expire: {expiredate}".format(**_cert_info))
else:
if _cert_info.get("statusCode") == "100":
_ret.append("1 \"ACME Cert: {description}\" age=0 Status: pending".format(**_cert_info))
else:
_ret.append("2 \"ACME Cert: {description}\" age=0 Error Status: {statusCode}".format(**_cert_info))
return _ret
def _read_nginx_socket(self):
session = requests.Session()
session.mount("http://nginx/", NginxAdapter())
response = session.get("http://nginx/vts")
return response.json()
def checklocal_nginx(self):
_ret = []
_config = self._config_reader().get("OPNsense").get("Nginx")
if type(_config) != dict:
return []
_upstream_config = _config.get("upstream")
if type(_upstream_config) != list:
_upstream_config = [_upstream_config]
try:
_data = self._read_nginx_socket()
except (requests.exceptions.ConnectionError,FileNotFoundError):
return [] ## no socket
for _serverzone,_serverzone_data in _data.get("serverZones",{}).items():
if _serverzone == "*":
continue
_serverzone_data["serverzone"] = _serverzone
_ret.append("0 \"Nginx Zone: {serverzone}\" bytesin={inBytes}|bytesout={outBytes} OK".format(**_serverzone_data))
for _upstream,_upstream_data in _data.get("upstreamZones",{}).items():
if _upstream.startswith("upstream"):
#_upstream_config_data["status"] = _upstream_data.get("")
_upstream_config_data = next(filter(lambda x: x.get("@uuid","").replace("-","") == _upstream[8:],_upstream_config))
#_upstream_data["upstream"] = _upstream_config_data.get("description",_upstream)
upstream=_upstream_config_data.get("description",_upstream)
_ret.append(f"0 \"Nginx Upstream: {upstream}\" - OK") ## fixme
return _ret
def check_haproxy(self):
_ret = ["<<<haproxy:sep(44)>>>"]
_path = "/var/run/haproxy.socket"
try:
_haproxy_servers = dict(map(lambda x: (x.get("@uuid"),x),self._config_reader().get("OPNsense").get("HAProxy").get("servers").get("server")))
_healthcheck_servers = []
for _backend in self._config_reader().get("OPNsense").get("HAProxy").get("backends").get("backend"):
if _backend.get("healthCheckEnabled") == "1" and _backend.get("healthCheck") != None:
for _server_id in _backend.get("linkedServers","").split(","):
_server = _haproxy_servers.get(_server_id)
_healthcheck_servers.append("{0},{1}".format(_backend.get("name",""),_server.get("name","")))
except:
return []
if os.path.exists(_path):
_sock = socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)
_sock.connect(_path)
_sock.send("show stat\n".encode("utf-8"))
_data = ""
while True:
_sockdata = _sock.recv(4096)
if not _sockdata:
break
_data += _sockdata.decode("utf-8")
for _line in _data.split("\n"):
_linedata = _line.split(",")
if len(_linedata) < 33:
continue
#pprint(list(enumerate(_linedata)))
if _linedata[32] == "2":
if "{0},{1}".format(*_linedata) not in _healthcheck_servers:
continue ## ignore backends check disabled
_ret.append(_line)
return _ret
def check_smartinfo(self):
if not os.path.exists("/usr/local/sbin/smartctl"):
return []
REGEX_DISCPATH = re.compile("(sd[a-z]+|da[0-9]+|nvme[0-9]+|ada[0-9]+)$")
_ret = ["<<<disk_smart_info:sep(124)>>>"]
for _dev in filter(lambda x: REGEX_DISCPATH.match(x),os.listdir("/dev/")):
try:
_ret.append(str(smart_disc(_dev)))
except:
pass
return _ret
def check_ipmi(self):
if not os.path.exists("/usr/local/bin/ipmitool"):
return []
_ret = ["<<<ipmi:sep(124)>>>"]
_out = self._run_prog("/usr/local/bin/ipmitool sensor list")
_ret += re.findall("^(?!.*\sna\s.*$).*",_out,re.M)
return _ret
def check_df(self):
_ret = ["<<<df>>>"]
_ret += self._run_prog("df -kTP -t ufs").split("\n")[1:]
return _ret
def check_kernel(self):
_ret = ["<<<kernel>>>"]
_out = self._run_prog("sysctl vm.stats",timeout=10)
_kernel = dict([_v.split(": ") for _v in _out.split("\n") if len(_v.split(": ")) == 2])
_ret.append("{0:.0f}".format(time.time()))
_ret.append("cpu {0} {1} {2} {4} {3}".format(*(self._run_prog("sysctl -n kern.cp_time","").split(" "))))
_ret.append("ctxt {0}".format(_kernel.get("vm.stats.sys.v_swtch")))
_sum = sum(map(lambda x: int(x[1]),(filter(lambda x: x[0] in ("vm.stats.vm.v_forks","vm.stats.vm.v_vforks","vm.stats.vm.v_rforks","vm.stats.vm.v_kthreads"),_kernel.items()))))
_ret.append("processes {0}".format(_sum))
return _ret
def check_mem(self):
_ret = ["<<<statgrab_mem>>>"]
_pagesize = int(self._run_prog("sysctl -n hw.pagesize"))
_out = self._run_prog("sysctl vm.stats",timeout=10)
_mem = dict(map(lambda x: (x[0],int(x[1])) ,[_v.split(": ") for _v in _out.split("\n") if len(_v.split(": ")) == 2]))
_mem_cache = _mem.get("vm.stats.vm.v_cache_count") * _pagesize
_mem_free = _mem.get("vm.stats.vm.v_free_count") * _pagesize
_mem_inactive = _mem.get("vm.stats.vm.v_inactive_count") * _pagesize
_mem_total = _mem.get("vm.stats.vm.v_page_count") * _pagesize
_mem_avail = _mem_inactive + _mem_cache + _mem_free
_mem_used = _mem_total - _mem_avail # fixme mem.hw
_ret.append("mem.cache {0}".format(_mem_cache))
_ret.append("mem.free {0}".format(_mem_free))
_ret.append("mem.total {0}".format(_mem_total))
_ret.append("mem.used {0}".format(_mem_used))
_ret.append("swap.free 0")
_ret.append("swap.total 0")
_ret.append("swap.used 0")
return _ret
def check_zpool(self):
_ret = ["<<<zpool_status>>>"]
try:
for _line in self._run_prog("zpool status -x").split("\n"):
if _line.find("errors: No known data errors") == -1:
_ret.append(_line)
except:
return []
return _ret
def check_zfs(self):
_ret = ["<<<zfsget>>>"]
_ret.append(self._run_prog("zfs get -t filesystem,volume -Hp name,quota,used,avail,mountpoint,type"))
_ret.append("[df]")
_ret.append(self._run_prog("df -kP -t zfs"))
_ret.append("<<<zfs_arc_cache>>>")
_ret.append(self._run_prog("sysctl -q kstat.zfs.misc.arcstats").replace("kstat.zfs.misc.arcstats.","").replace(": "," = ").strip())
return _ret
def check_mounts(self):
_ret = ["<<<mounts>>>"]
_ret.append(self._run_prog("mount -p -t ufs").strip())
return _ret
def check_cpu(self):
_ret = ["<<<cpu>>>"]
_loadavg = self._run_prog("sysctl -n vm.loadavg").strip("{} \n")
_proc = self._run_prog("top -b -n 1").split("\n")[1].split(" ")
_proc = "{0}/{1}".format(_proc[3],_proc[0])
_lastpid = self._run_prog("sysctl -n kern.lastpid").strip(" \n")
_ncpu = self._run_prog("sysctl -n hw.ncpu").strip(" \n")
_ret.append(f"{_loadavg} {_proc} {_lastpid} {_ncpu}")
return _ret
def check_netctr(self):
_ret = ["<<<netctr>>>"]
_out = self._run_prog("netstat -inb")
for _line in re.finditer("^(?!Name|lo|plip)(?P<iface>\w+)\s+(?P<mtu>\d+).*?Link.*?\s+.*?\s+(?P<inpkts>\d+)\s+(?P<inerr>\d+)\s+(?P<indrop>\d+)\s+(?P<inbytes>\d+)\s+(?P<outpkts>\d+)\s+(?P<outerr>\d+)\s+(?P<outbytes>\d+)\s+(?P<coll>\d+)$",_out,re.M):
_ret.append("{iface} {inbytes} {inpkts} {inerr} {indrop} 0 0 0 0 {outbytes} {outpkts} {outerr} 0 0 0 0 0".format(**_line.groupdict()))
return _ret
def check_ntp(self):
_ret = ["<<<ntp>>>"]
for _line in self._run_prog("ntpq -np",timeout=30).split("\n")[2:]:
if _line.strip():
_ret.append("{0} {1}".format(_line[0],_line[1:]))
return _ret
def check_tcp(self):
_ret = ["<<<tcp_conn_stats>>>"]
_out = self._run_prog("netstat -na")
counts = Counter(re.findall("ESTABLISHED|LISTEN",_out))
for _key,_val in counts.items():
_ret.append(f"{_key} {_val}")
return _ret
def check_ps(self):
_ret = ["<<<ps>>>"]
_out = self._run_prog("ps ax -o state,user,vsz,rss,pcpu,command")
for _line in re.finditer("^(?P<stat>\w+)\s+(?P<user>\w+)\s+(?P<vsz>\d+)\s+(?P<rss>\d+)\s+(?P<cpu>[\d.]+)\s+(?P<command>.*)$",_out,re.M):
_ret.append("({user},{vsz},{rss},{cpu}) {command}".format(**_line.groupdict()))
return _ret
def check_uptime(self):
_ret = ["<<<uptime>>>"]
_uptime_sec = time.time() - int(self._run_prog("sysctl -n kern.boottime").split(" ")[3].strip(" ,"))
_idle_sec = re.findall("(\d+):[\d.]+\s+\[idle\]",self._run_prog("ps axw"))[0]
_ret.append(f"{_uptime_sec} {_idle_sec}")
return _ret
def _run_prog(self,cmdline="",*args,shell=False,timeout=60,ignore_error=False):
if type(cmdline) == str:
_process = shlex.split(cmdline,posix=True)
else:
_process = cmdline
try:
return subprocess.check_output(_process,encoding="utf-8",shell=shell,stderr=subprocess.DEVNULL,timeout=timeout)
except subprocess.CalledProcessError as e:
if ignore_error:
return e.stdout
return ""
except subprocess.TimeoutExpired:
return ""
def _run_cache_prog(self,cmdline="",cachetime=10,*args,shell=False,ignore_error=False):
if type(cmdline) == str:
_process = shlex.split(cmdline,posix=True)
else:
_process = cmdline
_process_id = "".join(_process)
_runner = self._check_cache.get(_process_id)
if _runner == None:
_runner = checkmk_cached_process(_process,shell=shell,ignore_error=ignore_error)
self._check_cache[_process_id] = _runner
return _runner.get(cachetime)
class checkmk_cached_process(object):
def __init__(self,process,shell=False,ignore_error=False):
self._processs = process
self._islocal = os.path.dirname(process[0]).startswith(LOCALDIR)
self._shell = shell
self._ignore_error = ignore_error
self._mutex = threading.Lock()
with self._mutex:
self._data = (0,"")
self._thread = None
def _runner(self,timeout):
try:
_data = subprocess.check_output(self._processs,shell=self._shell,encoding="utf-8",stderr=subprocess.DEVNULL,timeout=timeout)
except subprocess.CalledProcessError as e:
if self._ignore_error:
_data = e.stdout
else:
_data = ""
except subprocess.TimeoutExpired:
_data = ""
with self._mutex:
self._data = (int(time.time()),_data)
self._thread = None
def get(self,cachetime):
with self._mutex:
_now = time.time()
_mtime = self._data[0]
if _now - _mtime > cachetime or cachetime == 0:
if not self._thread:
if cachetime > 0:
_timeout = cachetime*2-1
else:
_timeout = None
with self._mutex:
self._thread = threading.Thread(target=self._runner,args=[_timeout])
self._thread.start()
self._thread.join(30) ## waitmax
with self._mutex:
_mtime, _data = self._data
if not _data.strip():
return ""
if self._islocal:
_data = "".join([f"cached({_mtime},{cachetime}) {_line}" for _line in _data.splitlines(True) if len(_line.strip()) > 0])
else:
_data = re.sub("\B[<]{3}(.*?)[>]{3}\B",f"<<<\\1:cached({_mtime},{cachetime})>>>",_data)
return _data
class checkmk_server(TCPServer,checkmk_checker):
def __init__(self,port,pidfile,user,onlyfrom=None,encryptionkey=None,skipcheck=None,**kwargs):
self.pidfile = pidfile
self.onlyfrom = onlyfrom.split(",") if onlyfrom else None
self.skipcheck = skipcheck.split(",") if skipcheck else []
self.encryptionkey = encryptionkey
self._mutex = threading.Lock()
self.user = pwd.getpwnam(user)
self.allow_reuse_address = True
TCPServer.__init__(self,("",port),checkmk_handler,bind_and_activate=False)
def _change_user(self):
_, _, _uid, _gid, _, _, _ = self.user
if os.getuid() != _uid:
os.setgid(_gid)
os.setuid(_uid)
def verify_request(self, request, client_address):
if self.onlyfrom and client_address[0] not in self.onlyfrom:
return False
return True
def server_start(self):
log("starting checkmk_agent\n")
signal.signal(signal.SIGTERM, self._signal_handler)
signal.signal(signal.SIGINT, self._signal_handler)
signal.signal(signal.SIGHUP, self._signal_handler)
self._change_user()
try:
self.server_bind()
self.server_activate()
except:
self.server_close()
raise
try:
self.serve_forever()
except KeyboardInterrupt:
sys.stdout.flush()
sys.stdout.write("\n")
pass
def _signal_handler(self,signum,*args):
if signum in (signal.SIGTERM,signal.SIGINT):
log("stopping checkmk_agent")
threading.Thread(target=self.shutdown,name='shutdown').start()
sys.exit(0)
log("checkmk_agent running")
def daemonize(self):
try:
pid = os.fork()
if pid > 0:
## first parent
sys.exit(0)
except OSError as e:
log("err","Fork failed")
sys.exit(1)
os.chdir("/")
os.setsid()
os.umask(0)
try:
pid = os.fork()
if pid > 0:
## second
sys.exit(0)
except OSError as e:
log("err","Fork 2 failed")
sys.exit(1)
sys.stdout.flush()
sys.stderr.flush()
self._redirect_stream(sys.stdin,None)
self._redirect_stream(sys.stdout,None)
self._redirect_stream(sys.stderr,None)
with open(self.pidfile,"wt") as _pidfile:
_pidfile.write(str(os.getpid()))
os.chown(self.pidfile,self.user[2],self.user[3])
try:
self.server_start()
finally:
try:
os.remove(self.pidfile)
except:
pass
@staticmethod
def _redirect_stream(system_stream,target_stream):
if target_stream is None:
target_fd = os.open(os.devnull, os.O_RDWR)
else:
target_fd = target_stream.fileno()
os.dup2(target_fd, system_stream.fileno())
def __del__(self):
pass ## todo
REGEX_SMART_VENDOR = re.compile(r"^\s*(?P<num>\d+)\s(?P<name>[-\w]+).*\s{2,}(?P<value>[\w\/() ]+)$",re.M)
REGEX_SMART_DICT = re.compile(r"^(.*?):\s*(.*?)$",re.M)
class smart_disc(object):
def __init__(self,device):
self.device = device
MAPPING = {
"Model Family" : ("model_family" ,lambda x: x),
"Model Number" : ("model_family" ,lambda x: x),
"Product" : ("model_family" ,lambda x: x),
"Vendor" : ("vendor" ,lambda x: x),
"Revision" : ("revision" ,lambda x: x),
"Device Model" : ("model_type" ,lambda x: x),
"Serial Number" : ("serial_number" ,lambda x: x),
"Serial number" : ("serial_number" ,lambda x: x),
"Firmware Version" : ("firmware_version" ,lambda x: x),
"User Capacity" : ("capacity" ,lambda x: x.split(" ")[0].replace(",","")),
"Total NVM Capacity": ("capacity" ,lambda x: x.split(" ")[0].replace(",","")),
"Rotation Rate" : ("rpm" ,lambda x: x.replace(" rpm","")),
"Form Factor" : ("formfactor" ,lambda x: x),
"SATA Version is" : ("transport" ,lambda x: x.split(",")[0]),
"Transport protocol": ("transport" ,lambda x: x),
"SMART support is" : ("smart" ,lambda x: int(x.lower() == "enabled")),
"Critical Warning" : ("critical" ,lambda x: self._saveint(x,base=16)),
"Temperature" : ("temperature" ,lambda x: x.split(" ")[0]),
"Data Units Read" : ("data_read_bytes" ,lambda x: x.split(" ")[0].replace(",","")),
"Data Units Written": ("data_write_bytes" ,lambda x: x.split(" ")[0].replace(",","")),
"Power On Hours" : ("poweronhours" ,lambda x: x.replace(",","")),
"Power Cycles" : ("powercycles" ,lambda x: x.replace(",","")),
"NVMe Version" : ("transport" ,lambda x: f"NVMe {x}"),
"Raw_Read_Error_Rate" : ("error_rate" ,lambda x: x.replace(",","")),
"Reallocated_Sector_Ct" : ("reallocate" ,lambda x: x.replace(",","")),
"Seek_Error_Rate" : ("seek_error_rate",lambda x: x.replace(",","")),
"Power_Cycle_Count" : ("powercycles" ,lambda x: x.replace(",","")),
"Temperature_Celsius" : ("temperature" ,lambda x: x.split(" ")[0]),
"UDMA_CRC_Error_Count" : ("udma_error" ,lambda x: x.replace(",","")),
"Offline_Uncorrectable" : ("uncorrectable" ,lambda x: x.replace(",","")),
"Power_On_Hours" : ("poweronhours" ,lambda x: x.replace(",","")),
"Spin_Retry_Count" : ("spinretry" ,lambda x: x.replace(",","")),
"Current_Pending_Sector": ("pendingsector" ,lambda x: x.replace(",","")),
"Current Drive Temperature" : ("temperature" ,lambda x: x.split(" ")[0]),
"Reallocated_Event_Count" : ("reallocate_ev" ,lambda x: x.split(" ")[0]),
"Warning Comp. Temp. Threshold" : ("temperature_warn" ,lambda x: x.split(" ")[0]),
"Critical Comp. Temp. Threshold" : ("temperature_crit" ,lambda x: x.split(" ")[0]),
"Media and Data Integrity Errors" : ("media_errors" ,lambda x: x),
"Airflow_Temperature_Cel" : ("temperature" ,lambda x: x),
"SMART overall-health self-assessment test result" : ("smart_status" ,lambda x: int(x.lower() == "passed")),
"SMART Health Status" : ("smart_status" ,lambda x: int(x.lower() == "ok")),
}
self._get_data()
for _key, _value in REGEX_SMART_DICT.findall(self._smartctl_output):
if _key in MAPPING.keys():
_map = MAPPING[_key]
setattr(self,_map[0],_map[1](_value))
for _vendor_num,_vendor_text,_value in REGEX_SMART_VENDOR.findall(self._smartctl_output):
if _vendor_text in MAPPING.keys():
_map = MAPPING[_vendor_text]
setattr(self,_map[0],_map[1](_value))
def _saveint(self,val,base=10):
try:
return int(val,base)
except (TypeError,ValueError):
return 0
def _get_data(self):
try:
self._smartctl_output = subprocess.check_output(["smartctl","-a","-n","standby", f"/dev/{self.device}"],encoding=sys.stdout.encoding,timeout=10)
except subprocess.CalledProcessError as e:
if e.returncode & 0x1:
raise
_status = ""
self._smartctl_output = e.output
if e.returncode & 0x2:
_status = "SMART Health Status: CRC Error"
if e.returncode & 0x4:
_status = "SMART Health Status: PREFAIL"
if e.returncode & 0x3:
_status = "SMART Health Status: DISK FAILING"
self._smartctl_output += f"\n{_status}\n"
except subprocess.TimeoutExpired:
self._smartctl_output += "\nSMART smartctl Timeout\n"
def __str__(self):
_ret = []
if not getattr(self,"model_type",None):
self.model_type = getattr(self,"model_family","unknown")
for _k,_v in self.__dict__.items():
if _k.startswith("_") or _k in ("device"):
continue
_ret.append(f"{self.device}|{_k}|{_v}")
return "\n".join(_ret)
if __name__ == "__main__":
import argparse
class SmartFormatter(argparse.HelpFormatter):
def _split_lines(self, text, width):
if text.startswith('R|'):
return text[2:].splitlines()
# this is the RawTextHelpFormatter._split_lines
return argparse.HelpFormatter._split_lines(self, text, width)
_checks_available = sorted(list(map(lambda x: x.split("_")[1],filter(lambda x: x.startswith("check_") or x.startswith("checklocal_"),dir(checkmk_checker)))))
_ = lambda x: x
_parser = argparse.ArgumentParser(f"checkmk_agent for opnsense\nVersion: {__VERSION__}\n##########################################\n", formatter_class=SmartFormatter)
_parser.add_argument("--port",type=int,default=6556,
help=_("Port checkmk_agent listen"))
_parser.add_argument("--start",action="store_true",
help=_("start the daemon"))
_parser.add_argument("--stop",action="store_true",
help=_("stop the daemon"))
_parser.add_argument("--nodaemon",action="store_true",
help=_("run in foreground"))
_parser.add_argument("--status",action="store_true",
help=_("show status if running"))
_parser.add_argument("--config",type=str,dest="configfile",default=CHECKMK_CONFIG,
help=_("path to config file"))
_parser.add_argument("--user",type=str,default="root",
help=_(""))
_parser.add_argument("--encrypt",type=str,dest="encryptionkey",
help=_("Encryption password (do not use from cmdline)"))
_parser.add_argument("--pidfile",type=str,default="/var/run/checkmk_agent.pid",
help=_(""))
_parser.add_argument("--onlyfrom",type=str,
help=_("comma seperated ip addresses to allow"))
_parser.add_argument("--skipcheck",type=str,
help=_("R|comma seperated checks that will be skipped \n{0}".format("\n".join([", ".join(_checks_available[i:i+10]) for i in range(0,len(_checks_available),10)]))))
_parser.add_argument("--debug",action="store_true",
help=_("debug Ausgabe"))
args = _parser.parse_args()
if args.configfile and os.path.exists(args.configfile):
for _k,_v in re.findall(f"^(\w+):\s*(.*?)(?:\s+#|$)",open(args.configfile,"rt").read(),re.M):
if _k == "port":
args.port = int(_v)
if _k == "encrypt":
args.encryptionkey = _v
if _k == "onlyfrom":
args.onlyfrom = _v
if _k == "skipcheck":
args.skipcheck = _v
if _k.lower() == "localdir":
LOCALDIR = _v
if _k.lower() == "spooldir":
SPOOLDIR = _v
_server = checkmk_server(**args.__dict__)
_pid = None
try:
with open(args.pidfile,"rt") as _pidfile:
_pid = int(_pidfile.read())
except (FileNotFoundError,IOError):
_out = subprocess.check_output(["sockstat", "-l", "-p", str(args.port),"-P", "tcp"],encoding=sys.stdout.encoding)
try:
_pid = int(re.findall("\s(\d+)\s",_out.split("\n")[1])[0])
except (IndexError,ValueError):
pass
if args.start:
if _pid:
try:
os.kill(_pid,0)
except OSError:
pass
else:
log("err",f"allready running with pid {_pid}")
sys.exit(1)
_server.daemonize()
elif args.status:
if not _pid:
log("Not running\n")
else:
os.kill(int(_pid),signal.SIGHUP)
elif args.stop:
if not _pid:
log("Not running\n")
sys.exit(1)
os.kill(int(_pid),signal.SIGTERM)
elif args.debug:
sys.stdout.write(_server.do_checks(debug=True).decode(sys.stdout.encoding))
sys.stdout.flush()
elif args.nodaemon:
_server.server_start()
else:
# _server.server_start()
## default start daemon
if _pid:
try:
os.kill(_pid,0)
except OSError:
pass
else:
log(f"allready running with pid {_pid}")
sys.exit(1)
_server.daemonize()