(Swift 2) Okta Client Credentials FLow

The Client Credentials flow is recommended for use in machine-to-machine authentication. Your application will need to securely store its Client ID and Secret and pass those to Okta in exchange for an access token. At a high-level, the flow only has two steps:

• Your application passes its client credentials to your Okta authorization server.
• If the credentials are accurate, Okta responds with an access token.

Note: This example uses "customScope". You'll replace it with whatever scope(s) you've defined for your app. Scopes are defined in your Authorization Server. See Okta Authorization Server / Scopes

For more information, see https://developer.okta.com/docs/guides/implement-client-creds/use-flow/

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let http = CkoHttp()
    var success: Bool

    // Implements the following CURL command:

    // curl --request POST \
    //   --url https://{yourOktaDomain}/oauth2/default/v1/token \
    //   --header 'accept: application/json' \
    //   --user "client_id:client_secret" \
    //   --header 'cache-control: no-cache' \
    //   --header 'content-type: application/x-www-form-urlencoded' \
    //   --data 'grant_type=client_credentials&scope=customScope'

    http.Login = "client_id"
    http.Password = "client_secret"

    let req = CkoHttpRequest()
    req.HttpVerb = "POST"
    req.Path = "/oauth2/default/v1/token"
    req.ContentType = "application/x-www-form-urlencoded"
    req.AddParam("grant_type", value: "client_credentials")
    req.AddParam("scope", value: "customScope")

    req.AddHeader("accept", value: "application/json")

    var resp: CkoHttpResponse? = http.PostUrlEncoded("https://{yourOktaDomain}/oauth2/default/v1/token", req: req)
    if http.LastMethodSuccess == false {
        print("\(http.LastErrorText)")
        return
    }

    let sbResponseBody = CkoStringBuilder()
    resp!.GetBodySb(sbResponseBody)
    let jResp = CkoJsonObject()
    jResp.LoadSb(sbResponseBody)
    jResp.EmitCompact = false

    print("Response Body:")
    print("\(jResp.Emit())")

    var respStatusCode: Int = resp!.StatusCode.intValue
    print("Response Status Code = \(respStatusCode)")
    if respStatusCode >= 400 {
        print("Response Header:")
        print("\(resp!.Header)")
        print("Failed.")
        resp = nil
        return
    }

    resp = nil

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "access_token": "eyJraWQiO ... B2CnCLj7GRUW3mQ",
    //   "token_type": "Bearer",
    //   "expires_in": 3600,
    //   "scope": "customScope"
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    var access_token: String? = jResp.StringOf("access_token")
    var token_type: String? = jResp.StringOf("token_type")
    var expires_in: Int = jResp.IntOf("expires_in").intValue
    var scope: String? = jResp.StringOf("scope")

}