plugins/Invoke-IcingaCheckCheckSum.psm1
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<# .SYNOPSIS Checks hash against file hash of a file .DESCRIPTION Invoke-IcingaCheckCheckSum returns either 'OK' or 'CRITICAL', whether the check matches or not. More Information on https://github.com/Icinga/icinga-powershell-plugins .FUNCTIONALITY This module is intended to be used to check a hash against a file hash of a file, to determine whether changes have occurred. Based on the match result the status will change between 'OK' or 'CRITICAL'. The function will return one of these given codes. .EXAMPLE PS> Invoke-IcingaCheckCheckSum -Path "C:\Users\Icinga\Downloads\test.txt" [OK] CheckSum C:\Users\Icinga\Downloads\test.txt is 008FB84A017F5DFDAF038DB2FDD6934E6E5D9CD3C7AACE2F2168D7D93AF51E4B .EXAMPLE PS> Invoke-IcingaCheckCheckSum -Path "C:\Users\Icinga\Downloads\test.txt" -Hash 008FB84A017F5DFDAF038DB2FDD6934E6E5D9CD3C7AACE2F2168D7D93AF51E4B [OK] CheckSum C:\Users\Icinga\Downloads\test.txt is 008FB84A017F5DFDAF038DB2FDD6934E6E5D9CD3C7AACE2F2168D7D93AF51E4B| .EXAMPLE PS> Invoke-IcingaCheckCheckSum -Path "C:\Users\Icinga\Downloads\test.txt" -Hash 008FB84A017F5DFDAF038DB2FDD6934E6E5D [CRITICAL] CheckSum C:\Users\Icinga\Downloads\test.txt 008FB84A017F5DFDAF038DB2FDD6934E6E5D9CD3C7AACE2F2168D7D93AF51E4B is not matching 008FB84A017F5DFDAF038DB2FDD6934E6E5D .PARAMETER WarningBytes Used to specify a string to the path of a file, which will be checked. The string has to be like "C:\Users\Icinga\test.txt" .PARAMETER Algorithm Used to specify a string, which contains the algorithm to be used. Allowed algorithms: 'SHA1', 'SHA256', 'SHA384', 'SHA512', 'MD5' .INPUTS System.String .OUTPUTS System.String .LINK https://github.com/Icinga/icinga-powershell-plugins .NOTES #> function Invoke-IcingaCheckCheckSum() { param ( [string]$Path = $null, [ValidateSet('SHA1', 'SHA256', 'SHA384', 'SHA512', 'MD5')] [string]$Algorithm = 'SHA256', [string]$Hash = $null, [switch]$NoPerfData, [ValidateSet(0, 1, 2, 3)] [int]$Verbosity = 0 ); if ([string]::IsNullOrEmpty($Path)) { Exit-IcingaThrowException -Force -CustomMessage 'Unset argument "-Path"' -ExceptionType 'Configuration' -ExceptionThrown $IcingaExceptions.Configuration.PluginArgumentMissing; } if ((Test-Path $Path) -eq $FALSE -Or (Get-Item $Path) -Is [System.IO.DirectoryInfo]) { Exit-IcingaThrowException -Force -CustomMessage '"-Path" is not directing to a file' -ExceptionType 'Configuration' -ExceptionThrown $IcingaExceptions.Configuration.PluginArgumentConflict; } [string]$FileHash = (Get-FileHash $Path -Algorithm $Algorithm).Hash $CheckSumCheck = New-IcingaCheck -Name "CheckSum $Path" -Value $FileHash; If (([string]::IsNullOrEmpty($Hash)) -eq $FALSE) { $CheckSumCheck.CritIfNotMatch($Hash) | Out-Null; } return (New-IcingaCheckResult -Check $CheckSumCheck -NoPerfData $NoPerfData -Compile); } |