Private/ResolveHost.ps1
function ResolveHost { [CmdletBinding()] Param( [Parameter(Mandatory=$True)] [string]$HostNameOrIP ) ##### BEGIN Main Body ##### $RemoteHostNetworkInfoArray = @() if (!$(TestIsValidIPAddress -IPAddress $HostNameOrIP)) { try { $HostNamePrep = $HostNameOrIP [System.Collections.ArrayList]$RemoteHostArrayOfIPAddresses = @() $IPv4AddressFamily = "InterNetwork" $IPv6AddressFamily = "InterNetworkV6" $ResolutionInfo = [System.Net.Dns]::GetHostEntry($HostNamePrep) $ResolutionInfo.AddressList | Where-Object { $_.AddressFamily -eq $IPv4AddressFamily } | foreach { if ($RemoteHostArrayOfIPAddresses -notcontains $_.IPAddressToString) { $null = $RemoteHostArrayOfIPAddresses.Add($_.IPAddressToString) } } } catch { Write-Verbose "Unable to resolve $HostNameOrIP when treated as a Host Name (as opposed to IP Address)!" if ($HostNameOrIP -match "\.") { try { $HostNamePrep = $($HostNameOrIP -split "\.")[0] Write-Verbose "Trying to resolve $HostNameOrIP using only HostName: $HostNamePrep!" [System.Collections.ArrayList]$RemoteHostArrayOfIPAddresses = @() $ResolutionInfo = [System.Net.Dns]::GetHostEntry($HostNamePrep) $ResolutionInfo.AddressList | Where-Object { $_.AddressFamily -eq $IPv4AddressFamily } | foreach { if ($RemoteHostArrayOfIPAddresses -notcontains $_.IPAddressToString) { $null = $RemoteHostArrayOfIPAddresses.Add($_.IPAddressToString) } } } catch { Write-Verbose "Unable to resolve $HostNamePrep!" } } } } if (TestIsValidIPAddress -IPAddress $HostNameOrIP) { try { $HostIPPrep = $HostNameOrIP [System.Collections.ArrayList]$RemoteHostArrayOfIPAddresses = @() $null = $RemoteHostArrayOfIPAddresses.Add($HostIPPrep) $ResolutionInfo = [System.Net.Dns]::GetHostEntry($HostIPPrep) [System.Collections.ArrayList]$RemoteHostFQDNs = @() $null = $RemoteHostFQDNs.Add($ResolutionInfo.HostName) } catch { Write-Verbose "Unable to resolve $HostNameOrIP when treated as an IP Address (as opposed to Host Name)!" } } if ($RemoteHostArrayOfIPAddresses.Count -eq 0) { Write-Error "Unable to determine IP Address of $HostNameOrIP! Halting!" $global:FunctionResult = "1" return } # At this point, we have $RemoteHostArrayOfIPAddresses... [System.Collections.ArrayList]$RemoteHostFQDNs = @() foreach ($HostIP in $RemoteHostArrayOfIPAddresses) { try { $FQDNPrep = [System.Net.Dns]::GetHostEntry($HostIP).HostName } catch { Write-Verbose "Unable to resolve $HostIP. No PTR Record? Please check your DNS config." continue } if ($RemoteHostFQDNs -notcontains $FQDNPrep) { $null = $RemoteHostFQDNs.Add($FQDNPrep) } } if ($RemoteHostFQDNs.Count -eq 0) { $null = $RemoteHostFQDNs.Add($ResolutionInfo.HostName) } [System.Collections.ArrayList]$HostNameList = @() [System.Collections.ArrayList]$DomainList = @() foreach ($fqdn in $RemoteHostFQDNs) { $PeriodCheck = $($fqdn | Select-String -Pattern "\.").Matches.Success if ($PeriodCheck) { $HostName = $($fqdn -split "\.")[0] $Domain = $($fqdn -split "\.")[1..$($($fqdn -split "\.").Count-1)] -join '.' } else { $HostName = $fqdn $Domain = "Unknown" } $null = $HostNameList.Add($HostName) $null = $DomainList.Add($Domain) } if ($RemoteHostFQDNs[0] -eq $null -and $HostNameList[0] -eq $null -and $DomainList -eq "Unknown" -and $RemoteHostArrayOfIPAddresses) { [System.Collections.ArrayList]$SuccessfullyPingedIPs = @() # Test to see if we can reach the IP Addresses foreach ($ip in $RemoteHostArrayOfIPAddresses) { try { $null = [System.Net.NetworkInformation.Ping]::new().Send($ip,1000) $null = $SuccessfullyPingedIPs.Add($ip) } catch { Write-Verbose "Unable to ping $ip..." continue } } } $FQDNPrep = if ($RemoteHostFQDNs) {$RemoteHostFQDNs[0]} else {$null} if ($FQDNPrep -match ',') { $FQDN = $($FQDNPrep -split ',')[0] } else { $FQDN = $FQDNPrep } $DomainPrep = if ($DomainList) {$DomainList[0]} else {$null} if ($DomainPrep -match ',') { $Domain = $($DomainPrep -split ',')[0] } else { $Domain = $DomainPrep } $IPAddressList = [System.Collections.ArrayList]@($(if ($SuccessfullyPingedIPs) {$SuccessfullyPingedIPs} else {$RemoteHostArrayOfIPAddresses})) $HName = if ($HostNameList) {$HostNameList[0].ToLowerInvariant()} else {$null} if ($SuccessfullyPingedIPs.Count -eq 0 -and !$FQDN -and !$HostName -and !$Domain) { Write-Error "Unable to resolve $HostNameOrIP! Halting!" $global:FunctionResult = "1" return } [pscustomobject]@{ IPAddressList = $IPAddressList PingSuccess = $($SuccessfullyPingedIPs.Count -gt 0) FQDN = $FQDN HostName = $HName Domain = $Domain } ##### END Main Body ##### } # SIG # Begin signature block # MIIM3gYJKoZIhvcNAQcCoIIMzzCCDMsCAQExCzAJBgUrDgMCGgUAMGkGCisGAQQB # gjcCAQSgWzBZMDQGCisGAQQBgjcCAR4wJgIDAQAABBAfzDtgWUsITrck0sYpfvNR # AgEAAgEAAgEAAgEAAgEAMCEwCQYFKw4DAhoFAAQUI8H3C7hqz3yPShdzNk/ugueV # GnGgggpPMIIEKTCCAxGgAwIBAgITRAAAAALGGh0rrvpIiwAAAAAAAjANBgkqhkiG # 9w0BAQsFADBAMRMwEQYKCZImiZPyLGQBGRYDbGFiMRUwEwYKCZImiZPyLGQBGRYF # YWxwaGExEjAQBgNVBAMTCUFscGhhREMwMTAeFw0xODExMDYxNTQ2MjhaFw0yMDEx # MDYxNTU2MjhaMEExEzARBgoJkiaJk/IsZAEZFgNsYWIxFTATBgoJkiaJk/IsZAEZ # FgVhbHBoYTETMBEGA1UEAxMKQWxwaGFTdWJDQTCCASIwDQYJKoZIhvcNAQEBBQAD # ggEPADCCAQoCggEBAJ0yJxQZZ7jXPnBuOefihL0ehpBF1zoZpcM30pWneQA/kk9w # ByX9ISyKWTABstiIu8b2g6lKUjZBM8AOcLPSjl1ZMQkh+qaSQbJFVNeNYllGpjd1 # oOYvSPtr9iPpghVkAFWw9IdOgnd/4XDd4NqlddyR4Qb0g7v3+AMYrqhQCk2VzELp # 215LEO9sy1EMy7+B29B6P43Rp7ljA9Wc4Hnl+onviFWcIxmIhd0yGdobSxOSDgv5 # SUBfwk+DW03Y9pmJJHCU9hXFFVsPnrfBEvicGrkYx0vA+/O+jh5otex4eR+Tt7eB # 5VhrfdHKbEkZnBwrJOVz3rURZIu3BsDFSfwNd70CAwEAAaOCARkwggEVMBAGCSsG # AQQBgjcVAQQDAgEAMB0GA1UdDgQWBBRWBfwwFO+72Ebloy7rHmHnxX3k5DAZBgkr # BgEEAYI3FAIEDB4KAFMAdQBiAEMAQTAOBgNVHQ8BAf8EBAMCAYYwDwYDVR0TAQH/ # BAUwAwEB/zAfBgNVHSMEGDAWgBTq79v4G/Vf91c0y+vSJBWEI/vmDTA8BgNVHR8E # NTAzMDGgL6AthitodHRwOi8vcGtpLmFscGhhLmxhYi9jZXJ0ZGF0YS9BbHBoYURD # MDEuY3JsMEcGCCsGAQUFBwEBBDswOTA3BggrBgEFBQcwAoYraHR0cDovL3BraS5h # bHBoYS5sYWIvY2VydGRhdGEvQWxwaGFEQzAxLmNydDANBgkqhkiG9w0BAQsFAAOC # AQEAoE9hHZ0Y5M5tC15cnxVNJa/ILfwRmwCxzPyOAUrdBu4jbSHF2vRsKIJAXFs4 # +mwXqXpLYSUbXF5tfB86OKs2f9L7soln3BXJHj3eEs27htf7RJK1JjPtO8rs3pdn # h7TbDO3nyjkTcywJioScFZUTdIsQj7TBm3HIQ+/ZSdIWMHlQnYV2kW13XqUZnLhv # PRjy1NMBG1BAxUrc4bMi1X+mVxoYb/tiB59jakd95wi7ICi2H/07dXoDpi+kAQA1 # ki1/U+cuDhuH7Q8hegt64MlmKD01rO5HODVujuIG1+M5ZkGDeLNKksPHcSJ/DBSn # KjZca16Sn9No2kLq1q9gD8X/wzCCBh4wggUGoAMCAQICE3AAAAAHhXSIXehTWisA # AAAAAAcwDQYJKoZIhvcNAQELBQAwQTETMBEGCgmSJomT8ixkARkWA2xhYjEVMBMG # CgmSJomT8ixkARkWBWFscGhhMRMwEQYDVQQDEwpBbHBoYVN1YkNBMB4XDTE4MTEw # NzAzMTQyMFoXDTE5MTEwNzAzMTQyMFowTzETMBEGCgmSJomT8ixkARkWA2xhYjEV # MBMGCgmSJomT8ixkARkWBWFscGhhMQ4wDAYDVQQDEwVVc2VyczERMA8GA1UEAxMI # YWxwaGFkZXYwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCMUGwGv3p0 # prkDmSUQphU6UvIFQ57NxJFUOSmMZ7SY/nYNDy0iTN26eD0S5J8AQE8B/IGLHUno # tKFl2AUcQ31hpaSLE1YkThR3WZ4SFUaBMUgKKLc/RQKqE0iNbAfh53N/nnGs6jyu # 47kyuFRwWE2tZee6b5hh0dbT7YZnahLO7cLWErU4ikWWjEA98TcMK1gaNa5ThBn1 # +4bo9wuxjRKIGpkUJBP/1gq8qeSJnfNelZ34lD0EEirj7/YTzL5YkHMSXTuFMozw # Av4lXUW/qZ1pAT9rKBalQETxBv9SuC31hU/2EiB4EYYqVFLHglFRogLd7nFZhqa/ # 2O+WdW2LsW9lAgMBAAGjggL/MIIC+zAOBgNVHQ8BAf8EBAMCB4AwHQYDVR0OBBYE # FMy71rz8tJOXdsGvBt6SIVSKUlrkMB8GA1UdIwQYMBaAFFYF/DAU77vYRuWjLuse # YefFfeTkMIH3BgNVHR8Ege8wgewwgemggeaggeOGgbJsZGFwOi8vL0NOPUFscGhh # U3ViQ0EsQ049QWxwaGFTdWJDQSxDTj1DRFAsQ049UHVibGljJTIwS2V5JTIwU2Vy # dmljZXMsQ049U2VydmljZXMsQ049Q29uZmlndXJhdGlvbixEQz1hbHBoYSxEQz1s # YWI/Y2VydGlmaWNhdGVSZXZvY2F0aW9uTGlzdD9iYXNlP29iamVjdENsYXNzPWNS # TERpc3RyaWJ1dGlvblBvaW50hixodHRwOi8vcGtpLmFscGhhLmxhYi9jZXJ0ZGF0 # YS9BbHBoYVN1YkNBLmNybDCB9AYIKwYBBQUHAQEEgecwgeQwgacGCCsGAQUFBzAC # hoGabGRhcDovLy9DTj1BbHBoYVN1YkNBLENOPUFJQSxDTj1QdWJsaWMlMjBLZXkl # MjBTZXJ2aWNlcyxDTj1TZXJ2aWNlcyxDTj1Db25maWd1cmF0aW9uLERDPWFscGhh # LERDPWxhYj9jQUNlcnRpZmljYXRlP2Jhc2U/b2JqZWN0Q2xhc3M9Y2VydGlmaWNh # dGlvbkF1dGhvcml0eTA4BggrBgEFBQcwAoYsaHR0cDovL3BraS5hbHBoYS5sYWIv # Y2VydGRhdGEvQWxwaGFTdWJDQS5jcnQwPQYJKwYBBAGCNxUHBDAwLgYmKwYBBAGC # NxUIhLycPIHG3hyBiYk0hLvpfobokGRgg9+kPoHDslgCAWQCAQIwHwYDVR0lBBgw # FgYKKwYBBAGCNwoDDAYIKwYBBQUHAwMwKQYJKwYBBAGCNxUKBBwwGjAMBgorBgEE # AYI3CgMMMAoGCCsGAQUFBwMDMC0GA1UdEQQmMCSgIgYKKwYBBAGCNxQCA6AUDBJh # bHBoYWRldkBhbHBoYS5sYWIwDQYJKoZIhvcNAQELBQADggEBAIhV0GPEvq5KwIs+ # DTqLsqHcojMyJhJwrZkEim2XAJfNQFkiDrZzism7lOyXYJol6Bjz1txhos7P194+ # VyBdEZ/Q+r94hrq6SFgC2gCAReDZiy50Au/hTv958QNX/O0OFdIGBxavLqBrWbwu # yH+RtE9E4LICSPPd0dM/5XE0xtqDMjZcl3pVkqgHpv3O3zgtsTW+FWr4b9lq3rCO # HxsBGU1w7Eh0LLK8MLqioecr/4B1rPTJkcASXWMU5bllQgQvUmlKW0GIfhC9aM4J # 04MeJOU1mHLjDcxwWpDD670AFmGRg/mMPxMywvY0HLUszWikcXNYxF1ph+LhlLI9 # f9R1qqkxggH5MIIB9QIBATBYMEExEzARBgoJkiaJk/IsZAEZFgNsYWIxFTATBgoJ # kiaJk/IsZAEZFgVhbHBoYTETMBEGA1UEAxMKQWxwaGFTdWJDQQITcAAAAAeFdIhd # 6FNaKwAAAAAABzAJBgUrDgMCGgUAoHgwGAYKKwYBBAGCNwIBDDEKMAigAoAAoQKA # ADAZBgkqhkiG9w0BCQMxDAYKKwYBBAGCNwIBBDAcBgorBgEEAYI3AgELMQ4wDAYK # KwYBBAGCNwIBFTAjBgkqhkiG9w0BCQQxFgQUZAchZa9Exkjcs2BcaOV0wYd8dqIw # DQYJKoZIhvcNAQEBBQAEggEADQj9Z+/HDVn8gnM5yn1wWXOmRFOIhop2TtfcEYYc # V9jyd8M5hHw6gbGDSVXmixhW541gbjMKJSyyUNW0xGYCIhQhFJBPHzcpBdO8aHX1 # 5dFpdID1cM8OpX4KdZ6Tz8RWe9HfX1DEA9ARWzLZo9gg+7Q2o7cO+MELjDTijE+0 # i/sFz1EKaUfwQjYQv10mYTfqA03xVe1dV4LjQcueV2GSRQwLBe7FUDmVM7DmpCDW # Qb11Sihygb0TEDknw69qBOt19LauaNl5d6WRfJaU0eoo1a6CkmkrJMXwsxtCnCvg # 1933BFqpj747n7Asn0z+zQGMKVtc02sOuErsf95NzqHcyA== # SIG # End signature block |