Dart Requires Chilkat v11.5.0+

curl with OAuth2 Client Credentials

See more CURL Examples

This example shows how to run a simple CURL command with an OAuth2 access token for authorization. We use CURL to retrieve a SharePoint site ID, and Chilkat automatically fetches the OAuth2 access token using the provided credentials. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example will run the following curl command

  // curl -X GET "https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}" \
  //   -H "Authorization: Bearer ACCESS_TOKEN" \
  //   -H "Accept: application/json"

  final sb = CkStringBuilder();
  sb.appendLn('curl -X GET "https://graph.microsoft.com/v1.0/sites/{{sharepoint_hostname}}:/sites/{{site_name}}" \\');
  sb.appendLn('  -H "Authorization: Bearer ACCESS_TOKEN" \\');
  sb.appendLn('  -H "Accept: application/json"');

  // Build the JSON that provides information for getting the OAuth2 access token using the OAuth2 client credentials flow.
  final jsonOAuth2 = CkJsonObject();

  jsonOAuth2.updateString('oauth2.client_id', 'CLIENT_ID');
  jsonOAuth2.updateString('oauth2.client_secret', 'CLIENT_SECRET');
  jsonOAuth2.updateString('oauth2.scope', 'https://graph.microsoft.com/.default');
  jsonOAuth2.updateString('oauth2.token_endpoint', 'https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token');

  final httpCurl = CkHttpCurl();

  // Provide the information for getting the OAuth2 access token from the token endpoint
  // Note: The Authorization header specified in the curl command will be ignored and replaced using the OAuth2 access token obtained at runtime from the token endpoint.
  httpCurl.setAuth(jsonOAuth2);

  // The placeholders {{sharepoint_hostname}} and {{site_name}} represent variables that must be defined before execution.
  // When DoYourThing runs the curl command, it automatically substitutes these placeholders with their corresponding values.
  // Below are the values assigned to these variables:
  httpCurl.setVar('sharepoint_hostname', 'example.sharepoint.com');
  httpCurl.setVar('site_name', 'test');

  // Run the curl command.
  try {
    httpCurl.doYourThing(sb.getAsString());
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final responseJson = CkJsonObject();
  responseJson.emitCompact = false;

  httpCurl.getResponseJson(responseJson);

  final statusCode = httpCurl.statusCode;
  print('response status code: $statusCode');

  print(responseJson.emit());
}