(C#) curl with OAuth2 Client Credentials

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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.

Note: This example requires Chilkat v11.5.0 or greater.

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bool success = false;

// 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"

Chilkat.StringBuilder sb = new Chilkat.StringBuilder();
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.
Chilkat.JsonObject jsonOAuth2 = new Chilkat.JsonObject();

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");

Chilkat.HttpCurl httpCurl = new Chilkat.HttpCurl();

// 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.
success = httpCurl.DoYourThing(sb.GetAsString());
if (success == false) {
    Debug.WriteLine(httpCurl.LastErrorText);
    return;
}

Chilkat.JsonObject responseJson = new Chilkat.JsonObject();
responseJson.EmitCompact = false;

httpCurl.GetResponseJson(responseJson);

int statusCode = httpCurl.StatusCode;
Debug.WriteLine("response status code: " + Convert.ToString(statusCode));

Debug.WriteLine(responseJson.Emit());