# Microsoft Skype for Business - Group IM check
#
# Info:
#    This powershell plugin for the NSCP Client (former known as NSClient++) can be used to verify that a pair of users are able to take part in a data conference.
#    A data conference is any conference where collaborative activities such as whiteboarding or annotations are used.
#
# License:
#    This program 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; either version 2 of the License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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.
#
# Revision History:
#    Version 1.0: 2016-11-22	Bastian W. [Bastian@gmx-ist-cool.de]
#				* initial version
#
# FAQ:
#	How To solve "cannot be loaded because the execution of scripts is disabled on this system. Please see "get-help about_signing" for more details."
# 	See: http://technet.microsoft.com/en-us/library/ee176949.aspx [a possible solution would be 'Set-ExecutionPolicy RemoteSigned']
#
# Installation:
#
# 1.)
# Create a folder on C:\ called "NagiosMonitoring" if it didnīt exist, and put this script into that folder.
#
# Note: If you use another Foldername, you need to change this script completly!
#
# 2.)
# You need to edit the config below
#
#   Configuration:
#   ====================
#   Create a subset of the previous array for services you want to monitor
#   Syntax: $SfBPool="sfb_pool_fqdn";
$SfBPool="sfbpool.int.contoso.com";
#
# 3.)
# Now start a Powershell and run the following comands (to test if the script is working for you)
# "C:"
# "cd NagiosMonitoring"
# ".\NagiosMonitoring_SfB_GroupIM.ps1"
#
# 4.)
# Add this script to the NSClient++ configuration (file: NSC.ini) via:
#
# [External Scripts]
# SfBGroupIMCheck=cmd /c echo C:\NagiosMonitoring\NagiosMonitoring_SfB_GroupIM.ps1 | PowerShell.exe -Command -
#
# 5.)
# uncommend CheckExternalScripts.dll in the NSClient++ configuration (file: NSC.ini)
#
# 6.)
# Create a set of two testusers for the SfB pool you wish to monitor via New-CsHealthMonitoringConfiguration
# For more infos see: https://technet.microsoft.com/en-us/library/gg398718.aspx
#
# 7.)
# restart the NSClient++ Service
#
# 8.)
# Start checking the external script via your Nagios environment

# =========================================================================================================================
#
# ------------- Do not change anything behind that line ! ----------------------------
#
#
# Buildinfo
# used https://technet.microsoft.com/en-us/library/dn743839(v=ocs.15).aspx

# initialize vars/reset vars to zero
$intNagiosStatus = "0"
$strNagiosDescription = ""
$bDebugScript = 0

$Service = Test-CsGroupIM -TargetFqdn "$SfBPool"

if ($Service.Result -eq "Success")
{
	if ($bDebugScript -eq 1){ Write-Host " Debug:: Check returns success" -foregroundcolor magenta}
	
}
else
{
	if ($bDebugScript -eq 1){ Write-Host " Debug:: Check returns something else which is interpreted as error here" -foregroundcolor magenta}

	$strNagiosDescription = $Service.error
	$intNagiosStatus="2"
}


if ($intNagiosStatus -eq "2") 
{
	Write-Host "CRITICAL: " $strNagiosDescription
} 
else 
{
	Write-Host "OK: Group IM working. "
}

exit $intNagiosStatus