Swift

SharePoint OAuth2 Client Credentials Authentication

Demonstrates how to authenticate with OAuth 2.0 using the client credentials grant type. This is for SharePoint Online which is the cloud-based service provided by Microsoft as part of Office 365. (Users access SharePoint Online through a web browser, and the service is hosted on Microsoft's servers.) Swift

func chilkatTest() {
    var success: Bool = false

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

    let http = CkoHttp()!

    // Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
    // access token as needed.
    let jsonOAuthCC = CkoJsonObject()!

    // --------------------------------------------------------------------------------------------------------
    // You'll need to have registered an app in Azure beforehand.
    // See How to Create SharePoint App Registration for OAuth 2.0 Client Credentials
    // --------------------------------------------------------------------------------------------------------

    // Use the values from your App Registration in Azure.
    jsonOAuthCC.updateString(jsonPath: "client_id", value: "CLIENT_ID")
    jsonOAuthCC.updateString(jsonPath: "client_secret", value: "SECRET_VALUE")

    // You'll always use this scope for client credentials, because the allowed actions
    // are determined by the App Permissions defined when you registered the app in Azure.
    jsonOAuthCC.updateString(jsonPath: "scope", value: "https://graph.microsoft.com/.default")

    // The token endpoint includes your tenant ID. 
    jsonOAuthCC.updateString(jsonPath: "token_endpoint", value: "https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token")

    // Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
    http.authToken = jsonOAuthCC.emit()

    // Get information about all SharePoint sites.
    let sbJson = CkoStringBuilder()!
    success = http.quickGetSb(url: "https://graph.microsoft.com/v1.0/sites/getAllSites", sbContent: sbJson)
    if success == false {
        print("\(http.lastErrorText!)")
        return
    }

    var statusCode: Int = http.lastStatus.intValue

    print("Response status code = \(statusCode)")

    if statusCode != 200 {
        print("\(sbJson.getAsString()!)")
        print("Failed.")
        return
    }

    let jsonResp = CkoJsonObject()!
    jsonResp.loadSb(sb: sbJson)
    jsonResp.emitCompact = false

    print("\(jsonResp.emit()!)")
    print("Success.")

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

}