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refine ssl insecure and client certificate options

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* default TLS Protocols are now set to >= TLS1
* --cacert and --cert are no longer mandatory if option -s is used
* proper error messages if parsing of cert or key files fails
This commit is contained in:
Ricardo Bartels 2019-05-09 14:55:25 +02:00
parent df2bbdbf51
commit 8437c464e5
1 changed files with 31 additions and 8 deletions
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39
check_http_json.py
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@ -390,12 +390,8 @@ def parseArgs():
parser.add_argument('-k', '--insecure', action='store_true',
help='do not check server SSL certificate')
parser.add_argument('--cacert',
required=('-s' in sys.argv or '--ssl' in sys.argv)
and not ('-k' in sys.argv or '--insecure' in sys.argv),
dest='cacert', help='SSL CA certificate')
parser.add_argument('--cert',
required=('-s' in sys.argv or '--ssl' in sys.argv)
and not ('-k' in sys.argv or '--insecure' in sys.argv),
dest='cert', help='SSL client certificate')
parser.add_argument('--key', dest='key',
help='SSL client key ( if not bundled into the cert )')
@ -680,13 +676,40 @@ if __name__ == "__main__":
nagios = NagiosHelper()
if args.ssl:
url = "https://%s" % args.host
context = ssl.SSLContext(ssl.PROTOCOL_TLS)
context.options |= ssl.OP_NO_SSLv2
context.options |= ssl.OP_NO_SSLv3
if args.insecure:
context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
context.verify_mode = ssl.CERT_NONE
else:
context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
context.verify_mode = ssl.CERT_OPTIONAL
context.load_verify_locations(args.cacert)
context.load_cert_chain(args.cert,keyfile=args.key)
if args.cacert:
try:
context.load_verify_locations(args.cacert)
except ssl.SSLError:
nagios.append_unknown(
''' Error loading SSL CA cert "%s"!'''
% args.cacert)
if args.cert:
try:
context.load_cert_chain(args.cert,keyfile=args.key)
except ssl.SSLError:
if args.key:
nagios.append_unknown(
''' Error loading SSL cert. Make sure key "%s" belongs to cert "%s"!'''
% (args.key, args.cert))
else:
nagios.append_unknown(
''' Error loading SSL cert. Make sure "%s" contains the key as well!'''
% (args.cert))
if nagios.getCode() != OK_CODE:
print(nagios.getMessage())
exit(nagios.getCode())
else:
url = "http://%s" % args.host
if args.port: