Public/Get-ServiceNowToken.ps1
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function Get-ServiceNowToken { [OutputType([System.Management.Automation.PSCustomObject[]])] param ( [Parameter(Mandatory=$true)][ValidateSet("OAuth", "Basic")][string] $AuthType, [Parameter(Mandatory=$true)][string] $Server, [Parameter(Mandatory=$true)][pscredential] $Credential, [Parameter(Mandatory=$False)][string] $ClientID, [Parameter(Mandatory=$False)][string] $ClientSecret ) $Reply = New-Object -TypeName PSCustomObject if ($AuthType -eq 'Basic') { $pair = "{0}:{1}" -f $Credential.UserName, $Credential.GetNetworkCredential().password $bytes = [System.Text.Encoding]::UTF8.GetBytes($pair) $base64 = [System.Convert]::ToBase64String($bytes) $basicAuthValue = "Basic $base64" #Add the properties to the OAuth return object so that they can be checked later. $Reply | Add-Member -NotePropertyName ServerURL -NotePropertyValue $Server $Reply | Add-Member -NotePropertyName AuthHeader -NotePropertyValue $basicAuthValue $Reply | Add-Member -NotePropertyName expires -NotePropertyValue (get-date).AddDays(100) }else{ #Token doesn't exist or cannot be refreshed: Get a new token and store the values $body = [System.Text.Encoding]::UTF8.GetBytes('grant_type=password&username='+[uri]::EscapeDataString($($Credential.UserName))+'&password='+[uri]::EscapeDataString($($Credential.GetNetworkCredential().password))+'&client_id='+[uri]::EscapeDataString($ClientID)+'&client_secret='+[uri]::EscapeDataString($ClientSecret)) $Reply = Invoke-RESTMethod -Method 'Post' -URI "$($Server)/oauth_token.do" -body $Body -ContentType "application/x-www-form-urlencoded" if ($Reply.GetType().Name -eq 'string') { write-error 'Auth request returned a string. Please check host.' $Reply = $null }else{ #Add the properties to the OAuth return object so that they can be checked later. $Reply | Add-Member -NotePropertyName expires -NotePropertyValue (get-date).AddSeconds($Reply.expires_in) $Reply | Add-Member -NotePropertyName Clientid -NotePropertyValue $Clientid $Reply | Add-Member -NotePropertyName ClientSecret -NotePropertyValue $ClientSecret $Reply | Add-Member -NotePropertyName ServerURL -NotePropertyValue $Server $Reply | Add-Member -NotePropertyName AuthHeader -NotePropertyValue "Bearer $($Reply.access_token)" $Reply | Add-Member -NotePropertyName refresh_token_expires -NotePropertyValue (get-date).AddDays(100) } Write-Debug "New Auth Token Obtained - expires $($Reply.Expires)" } return $Reply } |