#!/bin/bash
# +------------------------------------------------------------------+
# |             ____ _               _        __  __ _  __           |
# |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
# |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
# |           | |___| | | |  __/ (__|   <    | |  | | . \            |
# |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
# |                                                                  |
# | Copyright Mathias Kettner 2010             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-
# ails.  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.

# This is a check_mk_agent plugin. It reads the memory module status
# information from IPMI on FSC TX 120 systems (and maybe others) using
# ipmi-sensors and ipmi-raw commands.
#
# This plugin has been developed on FSC TX 120 but may also work on
# other FSC hardware platforms. Please tell us when you find some
# other software where this plugin outputs valid information
#
# The plugin has been tested with freeipmi 0.5.1 and 0.8.4. Other
# versions may work too but have not been used during implementation.
#
# To enable this plugin simply copy it to the plugins directory of
# check_mk_agent on your target machines. By default the directory
# is located here: /usr/lib/check_mk_agent/plugins

# Check needed binarys
if ! which ipmi-sensors >/dev/null 2>&1; then
  OUT="\nE ipmi-sensors is missing" && ERR=1
fi
if ! which ipmi-raw >/dev/null 2>&1; then
  OUT="\nE ipmi-raw is missing" && ERR=1
fi

if [ -z $ERR ]; then
  # No cache file existing? => give more time to create it
  if [ ! -e "/var/cache/.freeipmi/sdr-cache/sdr-cache-$(hostname).127.0.0.1" ]
  then
    TIMEOUT=50
  else
    TIMEOUT=2
  fi
  CMD="waitmax $TIMEOUT ipmi-sensors --sdr-cache-directory /var/cache -g OEM_Reserved $FORMAT"
  CMD="ipmi-sensors --sdr-cache-directory /var/cache -g OEM_Reserved $FORMAT"
  FORMAT="--legacy-output"
  SENSORS=$($CMD $FORMAT 2>&1 || $CMD 2>&1)
  
  # Check for caching problem
  if [[ "$SENSORS" =~ "SDR" ]]; then
    OUT="\nE SDR cache broken. Need to be flushed and reloaded"
    ERR=1
  fi

  if [ -z $ERR ]; then
    SLOTS="$(echo "$SENSORS" | grep DIMM | cut -d' ' -f 2 | uniq)"

    # Use ipmi-sensors to get all memory slots of TX-120
    OUT=
    I=0
    for NAME in $SLOTS; do
      STATUS=$(ipmi-raw 0 0x2e 0xf5 0x80 0x28 0x00 0x48 $I | cut -d' ' -f 7)
      OUT="$OUT\n$I $NAME $STATUS"
      I=$(($I+1))
    done
  fi
fi

# Only print output when at least one memory slot was found
if [[ ! -z $ERR || $I -ne 0 ]]; then
  echo -n "<<<fsc_ipmi_mem_status>>>"
  echo -e "$OUT"
fi

exit 0