#!/usr/bin/python
# -*- encoding: utf-8; py-indent-offset: 4 -*-
# +------------------------------------------------------------------+
# |             ____ _               _        __  __ _  __           |
# |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
# |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
# |           | |___| | | |  __/ (__|   <    | |  | | . \            |
# |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
# |                                                                  |
# | Copyright Mathias Kettner 2017             mk@mathias-kettner.de |
# +------------------------------------------------------------------+
#
# This file is part of Check_MK.
# The official homepage is at http://mathias-kettner.de/check_mk.
#
# check_mk is free software;  you can redistribute it and/or modify it
# under the  terms of the  GNU General Public License  as published by
# the Free Software Foundation in version 2.  check_mk is  distributed
# in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
# out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
# PARTICULAR PURPOSE. See the  GNU General Public License for more de-
# tails. You should have  received  a copy of the  GNU  General Public
# License along with GNU Make; see the file  COPYING.  If  not,  write
# to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
# Boston, MA 02110-1301 USA.


# .1.3.6.1.4.1.9.9.147.1.2.2.2.1.3.40.6  "number of connections currently in use by the entire firewall"
# .1.3.6.1.4.1.9.9.147.1.2.2.2.1.3.40.7  "highest number of connections in use at any one time since system startup"
# .1.3.6.1.4.1.9.9.147.1.2.2.2.1.5.40.6  1045
# .1.3.6.1.4.1.9.9.147.1.2.2.2.1.5.40.7  2816


def inventory_cisco_asa_connections(info):
    return [(None, {})]


def check_cisco_asa_connections(_no_item, params, info):
    used_conns = int(info[0][0])
    overall_used_conns = info[1][0]
    infotext = "Currently used: %s" % used_conns
    state = 0

    if params.get("connections"):
        warn, crit = params["connections"]
        perfdata = [("fw_connections_active", used_conns, warn, crit)]
        if used_conns >= crit:
            state = 2
        elif used_conns >= warn:
            state = 1
        if state > 0:
            infotext += " (warn/crit at %s/%s)" % (warn, crit)
    else:
        perfdata = [("fw_connections_active", used_conns)]

    return state, "%s, Max. since system startup: %s" % (infotext, overall_used_conns), perfdata


check_info['cisco_asa_connections'] = {
    'inventory_function'    : inventory_cisco_asa_connections,
    'check_function'        : check_cisco_asa_connections,
    'service_description'   : 'Connections',
    'snmp_info'             : ('.1.3.6.1.4.1.9.9.147.1.2.2.2.1', [
                                '5', # CISCO-FIREWALL-MIB::cfwConnectionStatValue
                              ]),
    "snmp_scan_function"    : lambda oid: oid(".1.3.6.1.2.1.1.1.0").lower().startswith("cisco adaptive security") \
                                          or "cisco pix security" in oid(".1.3.6.1.2.1.1.1.0").lower(),
    "group"                 : "cisco_fw_connections",
    "has_perfdata"          : True,
}
