(PowerShell) Okta: Refresh Access Token with the Auth Code Flow

Demonstrates how to refresh a token that was obtained using the authorization code flow.

For more information, see https://developer.okta.com/docs/guides/implement-auth-code-pkce/use-flow/

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# See Get Okta Access Token using Authorization Code Flow with PKCE 
# for sample code showing how to obtain an Okta access token using the authorization code flow for native apps (with PKCE).

$jsonToken = New-Object Chilkat.JsonObject
$success = $jsonToken.LoadFile("qa_data/tokens/okta.json")
if ($success -ne $true) {
    $("Failed to load myob.json")
    exit
}

$oauth2 = New-Object Chilkat.OAuth2

$oauth2.TokenEndpoint = "https://{yourOktaDomain}/oauth2/default/v1/token"

# Replace these with actual values.
$oauth2.ClientId = "OKTA_CLIENT_ID"
$oauth2.ClientSecret = "OKTA_CLIENT_SECRET"

# Get the "refresh_token"
$oauth2.RefreshToken = $jsonToken.StringOf("refresh_token")

# Send the HTTP POST to refresh the access token..
$oauth2.VerboseLogging = $true
$success = $oauth2.RefreshAccessToken()
if ($success -ne $true) {
    $($oauth2.LastErrorText)
    exit
}

# Load the access token response into the json object 
$jsonToken.Load($oauth2.AccessTokenResponse)

# Save the new JSON access token response to a file.
# The access + refresh tokens contained in this JSON will be needed for the next refresh.
$sbJson = New-Object Chilkat.StringBuilder
$jsonToken.EmitCompact = $false
$jsonToken.EmitSb($sbJson)
$sbJson.WriteFile("qa_data/tokens/okta.json","utf-8",$false)

$("OAuth2 authorization granted!")
$("New Access Token = " + $oauth2.AccessToken)