get-computerinfo-revision

gistfile1.txt

#Requires -version 2.0

function Get-ADSiteFromComputer
{
	<#
	.Synopsis
	   Return the site that a computer is member of
	.DESCRIPTION
	   Given a computer name, it looks up its IP address and checks which AD site's subnet it is in
	.EXAMPLE
	   Get-ADSiteFromComputer -ComputerName "server1"
	.EXAMPLE
	   "server1" | Get-ADSiteFromComputer
	.NOTES
   	Adapted from http://www.itadmintools.com/2011/08/tcpip-subnet-math-with-powershell-part.html
#>
	[CmdletBinding()]
    #[OutputType([string])]
    Param
    (
        # Computer Name to look up
        [Parameter(Mandatory=$true,
                   ValueFromPipeline=$true,
                   ValueFromPipelineByPropertyName=$true,
                   Position=0)]
        $ComputerName
    )

    #Helper function, convert dotted decimal IP address to binary
    function toBinary ($dottedDecimal){
        $dottedDecimal.split(".") | %{$binary=$binary + $([convert]::toString($_,2).padleft(8,"0"))}
        return $binary
    }

    #main function
    $hostEntry= [System.Net.Dns]::GetHostByName($ComputerName)
    if($hostEntry){
     $ipAddress=toBinary ($hostEntry.AddressList[0].IPAddressToString)
    }else{
     Write-Warning "$ComputerName not found!"
     Return  #Exit
    }
    $sites=@{}
    $subnetsDN="LDAP://CN=Subnets,CN=Sites," + $([adsi] "LDAP://RootDSE").Get("ConfigurationNamingContext")
    Write-Verbose "`nGathering Site Information..."
    foreach ($subnet in $([adsi] $subnetsDN).psbase.children){
     $site=[adsi] "LDAP://$($subnet.siteObject)"
     if($site.cn -ne $null){
      ($networkID,$netbits)=$($subnet.cn).split("/")
      $binNetID=(toBinary $networkID).substring(0,$netbits)
      $sites[$binNetID]=([string]$site.cn)    #.toUpper()
     }
    }
    $i=32
    do {$tryNetID=$ipAddress.substring(0,$i);
     if($sites[$tryNetID]){
      Write-Verbose "`n$ComputerName is in site $($sites[$tryNetID])`n"
      Return $sites[$tryNetID] #Exit
     }
     $i--
    } while ($i -gt 0)
    Write-Warning "`n$ComputerName is not in a defined site`n"
}


function Get-ComputerInfo
{
<#
.Synopsis
   Gets info on a computer
.DESCRIPTION
   Collects into from server via WMI. 
.EXAMPLE
   Get-ComputerInfo.ps1
   gets info on local server
.EXAMPLE
   Get-ComputerInfo.ps1 -ComputerName Server1
   gets info for Server1 
.EXAMPLE
   ("Server1","Server2") | .\Invoke-PopulateITDB.ps1
   gets info for servers Server1 and Server2
#>
	[CmdletBinding()]
	Param
	(
		# Computer Name or IP Address
		[Parameter(Mandatory = $false,
				   ValueFromPipeline = $true,
				   ValueFromPipelineByPropertyName = $true,
				   Position = 0)]
		[string]$ComputerName
	)
	
	Begin
	{
		#If Get-ADSiteFromComputer function is removed from the start of this file
		#and the following line is uncommented, it runs without errors (& it works!)
		#. .\Get-ADSiteFromComputer.ps1
		#If no computer specified, use the local machine
		$LocalHost = [system.environment]::MachineName
		if ($ComputerName -eq "")
		{
			$ComputerName = $LocalHost
		}
	}
	Process
	{
		foreach ($Computer in $ComputerName)
		{
			Write-Verbose "Getting BIOS Info..."
			$BIOS = Get-WmiObject -ComputerName $Computer -Class Win32_BIOS
			Write-Verbose "Getting OS Info ..."
			$OperatingSystem = Get-WmiObject -ComputerName $Computer -Class Win32_OperatingSystem
			Write-Verbose "Getting Network Info..."
			$NetworkConfig = Get-WmiObject -ComputerName $Computer -Class win32_NetworkAdapterConfiguration -filter "IPENabled=$True"
			#alternate method
			#$NetworkConfig = Get-WmiObject -ComputerName $Computer -query "select * from win32_NetworkAdapterConfiguration where IPENabled=$Tr
			Write-Verbose "Getting CPU Info..."
			$CPU = Get-WmiObject -ComputerName $Computer -Class Win32_Processor
			Write-Verbose "Getting Computer Info..."
			$Machine = Get-WmiObject -ComputerName $Computer -Class Win32_ComputerSystem
			Write-Verbose "Getting Drive Info..."
			$Drives = Get-WmiObject -ComputerName $Computer -Class Win32_Volume
			foreach ($item in $Drives)
			{
				$Drive = $item.Caption
				$Capacity = $item.Capacity
				$FreeSpace = $item.FreeSpace
			}
			$site = Get-ADSiteFromComputer -ComputerName $Computer
			
			New-Object psobject -Property @{
				HostName = $OperatingSystem.CSName
				ServiceTag = $BIOS.SerialNumber
				OS = $OperatingSystem.Caption
				BootTime = $OperatingSystem.ConvertToDateTime($OperatingSystem.LastBootUpTime)
				InstallDate = $OperatingSystem.ConvertToDateTime($OperatingSystem.InstallDate)
				PhysicalMemory = $OperatingSystem.TotalVisibleMemorySize
				IP = $NetworkConfig.IPAddress[0]
				IPSubNet = $NetworkConfig.IPSubnet[0]
				CPU = $CPU.CurrentClockSpeed   #should this be MaxClockSpeed?
				CPUCount = $Machine.NumberOfProcessors
				Make = $Machine.Manufacturer
				Model = $Machine.Model
				Domain = $Machine.Domain
				Drive = $Drive
				Capacity = $Capacity
				FreeSpace = $FreeSpace
				Site = $Site
			}
		}
	}
	End
	{
	}
}