Exch-Rest

2.7

functions/other/Invoke-RefreshAccessToken.ps1

function Invoke-RefreshAccessToken
{
    param (
        [Parameter(Position = 0, Mandatory = $true)]
        [string]
        $MailboxName,
        
        [Parameter(Position = 1, Mandatory = $true)]
        [psobject]
        $AccessToken
    )
    Begin
    {
        Add-Type -AssemblyName System.Web
        $HttpClient = Get-HTTPClient($MailboxName)
        $ClientId = $AccessToken.clientid
        # $redirectUrl = [System.Web.HttpUtility]::UrlEncode($AccessToken.redirectUrl)
        $redirectUrl = $AccessToken.redirectUrl
        $RefreshToken = (Get-TokenFromSecureString -SecureToken $AccessToken.refresh_token)
        $AuthorizationPostRequest = "client_id=$ClientId&refresh_token=$RefreshToken&grant_type=refresh_token&redirect_uri=$redirectUrl"
        $content = New-Object System.Net.Http.StringContent($AuthorizationPostRequest, [System.Text.Encoding]::UTF8, "application/x-www-form-urlencoded")
        $ClientResult = $HttpClient.PostAsync([Uri]("https://login.windows.net/common/oauth2/token"), $content)
        if (!$ClientResult.Result.IsSuccessStatusCode)
        {
            Write-Output ("Error making REST POST " + $ClientResult.Result.StatusCode + " : " + $ClientResult.Result.ReasonPhrase)
            Write-Output $ClientResult.Result
            if ($ClientResult.Content -ne $null)
            {
                Write-Output ($ClientResult.Content.ReadAsStringAsync().Result);
            }
        }
        else
        {
            $JsonObject = ConvertFrom-Json -InputObject $ClientResult.Result.Content.ReadAsStringAsync().Result
            Add-Member -InputObject $JsonObject -NotePropertyName clientid -NotePropertyValue $AccessToken.clientid
            Add-Member -InputObject $JsonObject -NotePropertyName redirectUrl -NotePropertyValue $AccessToken.redirectUrl
            if ([bool]($AccessToken.PSobject.Properties.name -match "Beta"))
            {
                Add-Member -InputObject $JsonObject -NotePropertyName Beta -NotePropertyValue True
            }
            if ([bool]($JsonObject.PSobject.Properties.name -match "refresh_token"))
            {
                $JsonObject.refresh_token = (Get-ProtectedToken -PlainToken $JsonObject.refresh_token)
            }
            if ([bool]($JsonObject.PSobject.Properties.name -match "access_token"))
            {
                $JsonObject.access_token = (Get-ProtectedToken -PlainToken $JsonObject.access_token)
            }
            return $JsonObject
        }
        
    }
}