(C++) AzureWebsites OAuth2 Password Flow

Demonstrates how to do OAuth 2.0 password flow for azurewebsites.net.

Note: This example requires Chilkat v11.0.0 or greater.

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#include <CkHttp.h>
#include <CkHttpRequest.h>
#include <CkHttpResponse.h>
#include <CkStringBuilder.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkHttp http;

    CkHttpRequest req;
    req.put_HttpVerb("POST");
    req.put_Path("/token");
    req.put_ContentType("application/x-www-form-urlencoded");
    req.AddParam("grant_type","password");
    req.AddParam("username","your_username");
    req.AddParam("password","your_password");

    const char *tokenEndpoint = "https://your_api.azurewebsites.net/token";

    CkHttpResponse resp;
    success = http.HttpReq(tokenEndpoint,req,resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbResponseBody;
    resp.GetBodySb(sbResponseBody);
    CkJsonObject jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    std::cout << "Response Body:" << "\r\n";
    std::cout << jResp.emit() << "\r\n";

    // Sample JSON response:

    // {
    //   "access_token": "NQGHn ... xTS",
    //   "token_type": "bearer",
    //   "expires_in": 1209599,
    //   "userName": "your_username",
    //   ".issued": "Mon, 27 Apr 2020 23:49:35 GMT",
    //   ".expires": "Mon, 11 May 2020 23:49:35 GMT"
    // }

    int respStatusCode = resp.get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp.header() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    // ----------------------------------
    // Use the OAuth2 token in a request.
    // For example...

    CkStringBuilder sbXml;
    success = sbXml.LoadFile("c:/someDir/someXmlFile.xml","utf-8");
    if (success == false) {
        std::cout << "Failed to load the XML file." << "\r\n";
        return;
    }

    // Get the OAuth2 token and use it for authentication
    http.put_AuthToken(jResp.stringOf("token"));

    const char *destUrl = "https://your_api.azurewebsites.net/destinationUrl";
    success = http.HttpSb("POST",destUrl,sbXml,"utf-8","application/xml",resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    respStatusCode = resp.get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp.header() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    // Examine the response body
    std::cout << resp.bodyStr() << "\r\n";
    }