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Allow to overwrite system defaults for SSL protocol (#46)

* Add parameter (-S) for custom SSL/TLS protocol version

* Add parameter (-S) for custom SSL/TLS protocol version

* Add parameter (-S) for custom SSL/TLS protocol version
This commit is contained in:
Claudio Kuenzler 2020-06-05 16:12:13 +02:00 committed by GitHub
parent bf4ec05979
commit 274dceee74
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@ -15,16 +15,14 @@
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
# along with this program; if not, see <https://www.gnu.org/licenses/>.
#
# Pre-req : pywbem
#
# Copyright (c) 2008 David Ligeret
# Copyright (c) 2009 Joshua Daniel Franklin
# Copyright (c) 2010 Branden Schneider
# Copyright (c) 2010-2019 Claudio Kuenzler
# Copyright (c) 2010-2020 Claudio Kuenzler
# Copyright (c) 2010 Samir Ibradzic
# Copyright (c) 2010 Aaron Rogers
# Copyright (c) 2011 Ludovic Hutin
@ -39,14 +37,14 @@
# Copyright (c) 2015 Stanislav German-Evtushenko
# Copyright (c) 2015 Stefan Roos
# Copyright (c) 2018 Peter Newman
# Copyright (c) 2019 Luca Berra
# Copyright (c) 2020 Luca Berra
#
# The VMware 4.1 CIM API is documented here:
# http://www.vmware.com/support/developer/cim-sdk/4.1/smash/cim_smash_410_prog.pdf
# http://www.vmware.com/support/developer/cim-sdk/smash/u2/ga/apirefdoc/
#
# The VMware 5.x CIM API is documented here:
# http://pubs.vmware.com/vsphere-50/index.jsp?nav=/5_1_1
# The VMware 5.5 and above CIM API is documented here:
# https://code.vmware.com/apis/207/cim
#
# This monitoring plugin is maintained and documented here:
# https://www.claudiokuenzler.com/monitoring-plugins/check_esxi_hardware.php
@ -269,9 +267,14 @@
#@ Author : Phil Randal (phil.randal@gmail.com)
#@ Reason : Fix lookup of warranty info for Dell (again)
#@---------------------------------------------------
#@ Date : 20191115
#@ Date : 20200605
#@ Author : Luca Berra
#@ Reason : Add option to ignore chassis intrusion (Supermicro)
#@---------------------------------------------------
#@ Date : 20200605
#@ Author : Claudio Kuenzler
#@ Reason : Add parameter (-S) for custom SSL/TLS protocol version
#@---------------------------------------------------
from __future__ import print_function
import sys
@ -281,7 +284,7 @@ import re
import pkg_resources
from optparse import OptionParser,OptionGroup
version = '20191115'
version = '20200605'
NS = 'root/cimv2'
hosturl = ''
@ -506,22 +509,23 @@ def verboseoutput(message) :
# ----------------------------------------------------------------------
def getopts() :
global hosturl,cimport,user,password,vendor,verbose,perfdata,urlise_country,timeout,ignore_list,regex,get_power,get_volts,get_current,get_temp,get_fan,get_lcd,get_intrusion
usage = "usage: %prog -H hostname -U username -P password [-C port -V vendor -v -p -I XX -i list,list -r]\n" \
global hosturl,hostname,cimport,sslproto,user,password,vendor,verbose,perfdata,urlise_country,timeout,ignore_list,regex,get_power,get_volts,get_current,get_temp,get_fan,get_lcd,get_intrusion
usage = "usage: %prog -H hostname -U username -P password [-C port -S proto -V vendor -v -p -I XX -i list,list -r]\n" \
"example: %prog -H hostname -U root -P password -C 5989 -V auto -I uk\n\n" \
"or, verbosely:\n\n" \
"usage: %prog --host=hostname --user=username --pass=password [--cimport=port --vendor=system --verbose --perfdata --html=XX]\n"
"usage: %prog --host=hostname --user=username --pass=password [--cimport=port --sslproto=version --vendor=system --verbose --perfdata --html=XX]\n"
parser = OptionParser(usage=usage, version="%prog "+version)
group1 = OptionGroup(parser, 'Mandatory parameters')
group2 = OptionGroup(parser, 'Optional parameters')
group1.add_option("-H", "--host", dest="host", help="report on HOST", metavar="HOST")
group1.add_option("-H", "--host", dest="host", help="connect to HOST", metavar="HOST")
group1.add_option("-U", "--user", dest="user", help="user to connect as", metavar="USER")
group1.add_option("-P", "--pass", dest="password", \
help="password, if password matches file:<path>, first line of given file will be used as password", metavar="PASS")
group2.add_option("-C", "--cimport", dest="cimport", help="CIM port (default 5989)", metavar="CIMPORT")
group2.add_option("-S", "--sslproto", dest="sslproto", help="SSL/TLS protocol version to overwrite system default: SSLv2, SSLv3, TLSv1.0, TLSv1.1, TLSv1.2, TLSv1.3", metavar="SSLPROTO")
group2.add_option("-V", "--vendor", dest="vendor", help="Vendor code: auto, dell, hp, ibm, intel, or unknown (default)", \
metavar="VENDOR", type='choice', choices=['auto','dell','hp','ibm','intel','unknown'],default="unknown")
group2.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False, \
@ -596,6 +600,7 @@ def getopts() :
user=options.user
password=options.password
cimport=options.cimport
sslproto=options.sslproto
vendor=options.vendor.lower()
verbose=options.verbose
perfdata=options.perfdata
@ -641,10 +646,30 @@ if os_platform != "win32":
print('UNKNOWN: Execution time too long!')
sys.exit(ExitUnknown)
# Use non-default CIM port
if cimport:
verboseoutput("Using manually defined CIM port "+cimport)
hosturl += ':'+cimport
# Use non-default SSL protocol version
if sslproto:
verboseoutput("Using non-default SSL protocol: "+sslproto)
allowed_protos = ["SSLv2", "SSLv3", "TLSv1.0", "TLSv1.1", "TLSv1.2", "TLSv1.3"]
if any(proto.lower() == sslproto.lower() for proto in allowed_protos):
import os
sslconfpath = '/tmp/'+hostname+'_openssl.conf'
verboseoutput("Creating OpenSSL config file: "+sslconfpath)
try:
with open(sslconfpath, 'w') as config_file:
config_file.write("openssl_conf = openssl_init\n[openssl_init]\nssl_conf = ssl_configuration\n[ssl_configuration]\nsystem_default = tls_system_default\n[tls_system_default]\nMinProtocol = "+sslproto+"\n")
except Exception as e:
print('CRITICAL: An error occured while trying to write ssl config file: %s (%s)' % (sslconfpath, e))
sys.exit(ExitCritical)
os.environ["OPENSSL_CONF"] = sslconfpath
else:
print('CRITICAL: Invalid SSL protocol version given!')
sys.exit(ExitCritical)
# Append lcd related elements to ignore list if --no-lcd was used
verboseoutput("LCD Status: %s" % get_lcd)
if not get_lcd:
@ -717,6 +742,10 @@ if vendor=='auto':
sys.exit (ExitUnknown)
else:
verboseoutput("Unknown CIM Error: %s" % args)
except pywbem._exceptions.ConnectionError as args:
GlobalStatus = ExitUnknown
print("UNKNOWN: {}".format(args))
sys.exit (GlobalStatus)
except pywbem.cim_http.AuthError as arg:
verboseoutput("Global exit set to UNKNOWN")
GlobalStatus = ExitUnknown
@ -748,6 +777,10 @@ for classe in ClassesToCheck :
sys.exit (ExitUnknown)
else:
verboseoutput("Unknown CIM Error: %s" % args)
except pywbem._exceptions.ConnectionError as args:
GlobalStatus = ExitUnknown
print("UNKNOWN: {}".format(args))
sys.exit (GlobalStatus)
except pywbem.cim_http.AuthError as arg:
verboseoutput("Global exit set to UNKNOWN")
GlobalStatus = ExitUnknown