#-----------------------------------------------
# Test Website SSL Certificate
# by: Larry Billinghurst
# date: 31 Dec 2020
#-----------------------------------------------
# Example: .\test-ssl.ps1 -SiteURL https:\\dmv.utah.gov -ReportFile "C:\support\temp99.txt"
param(
[parameter()]
[string]$SiteURL = "https://www.facebook.com",
[string]$ReportFile = $env:TEMP + "\sslreport.txt"
)
$TempCerFile = $env:TEMP + "\sslchecktemp.cer"
$tempReportFile = "sslreport.txt"
#------------------------- Functions
function Get-WebsiteCertificate {
[CmdletBinding()]
param (
[Parameter(Mandatory=$true)] [System.Uri]
$Uri,
[Parameter()] [System.IO.FileInfo]
$OutputFile,
[Parameter()] [Switch]
$UseSystemProxy,
[Parameter()] [Switch]
$UseDefaultCredentials,
[Parameter()] [Switch]
$TrustAllCertificates
)
try {
$request = [System.Net.WebRequest]::Create($Uri)
if ($UseSystemProxy) {
$request.Proxy = [System.Net.WebRequest]::DefaultWebProxy
}
if ($UseSystemProxy -and $UseDefaultCredentials) {
$request.Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials
}
if ($TrustAllCertificates) {
# Create a compilation environment
$Provider=New-Object Microsoft.CSharp.CSharpCodeProvider
$Compiler=$Provider.CreateCompiler()
$Params=New-Object System.CodeDom.Compiler.CompilerParameters
$Params.GenerateExecutable=$False
$Params.GenerateInMemory=$True
$Params.IncludeDebugInformation=$False
$Params.ReferencedAssemblies.Add("System.DLL") > $null
$TASource=@'
namespace Local.ToolkitExtensions.Net.CertificatePolicy {
public class TrustAll : System.Net.ICertificatePolicy {
public TrustAll() {
}
public bool CheckValidationResult(System.Net.ServicePoint sp,
System.Security.Cryptography.X509Certificates.X509Certificate cert,
System.Net.WebRequest req, int problem) {
return true;
}
}
}
'@
$TAResults=$Provider.CompileAssemblyFromSource($Params,$TASource)
$TAAssembly=$TAResults.CompiledAssembly
## We now create an instance of the TrustAll and attach it to the ServicePointManager
$TrustAll=$TAAssembly.CreateInstance("Local.ToolkitExtensions.Net.CertificatePolicy.TrustAll")
[System.Net.ServicePointManager]::CertificatePolicy=$TrustAll
}
$response = $request.GetResponse()
$servicePoint = $request.ServicePoint
$certificate = $servicePoint.Certificate
if ($OutputFile) {
$certBytes = $certificate.Export(
[System.Security.Cryptography.X509Certificates.X509ContentType]::Cert
)
[System.IO.File]::WriteAllBytes( $OutputFile, $certBytes )
$OutputFile.Refresh()
return $OutputFile
} else {
return $certificate
}
} catch {
Write-Error "Failed to get website certificate. The error was '$_'."
return $null
}
<#
.SYNOPSIS
Retrieves the certificate used by a website.
.DESCRIPTION
Retrieves the certificate used by a website. Returns either an object or file.
.PARAMETER Uri
The URL of the website. This should start with https.
.PARAMETER OutputFile
Specifies what file to save the certificate as.
.PARAMETER UseSystemProxy
Whether or not to use the system proxy settings.
.PARAMETER UseDefaultCredentials
Whether or not to use the system logon credentials for the proxy.
.PARAMETER TrustAllCertificates
Ignore certificate errors for certificates that are expired, have a mismatched common name or are self signed.
.EXAMPLE
PS C:\> Get-WebsiteCertificate "https://www.gmail.com" -UseSystemProxy -UseDefaultCredentials -TrustAllCertificates -OutputFile C:\gmail.cer
.INPUTS
Does not accept pipeline input.
.OUTPUTS
System.Security.Cryptography.X509Certificates.X509Certificate, System.IO.FileInfo
#>
}
#-------------------- Main
#Get Website SSL certificate and save to temp file
Get-WebsiteCertificate -Uri $SiteURL -OutputFile $TempCerFile
# Check Certifacate
Write-Host
Write-Host "------------------------- SSL Report -------------------------"
Write-Host
certutil -f -urlfetch -verify $TempCerFile |Tee-Object $ReportFile
# Remove Report file if not requested
if ($tempReportFile -eq ($ReportFile|Split-Path -Leaf)) {Remove-Item $ReportFile}
# Remove Temp Cert File
Remove-Item $TempCerFile
