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Unicode C

MyInvois Malaysia Login as Intermediary System

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Demonstrates how to get an OAuth2 access token with an intermediary that is representing a taxpayer (acting on behalf of a specific taxpayer). The OAuth2 access token can then be used to access MyInvois protected APIs.

Chilkat Unicode C Downloads

Unicode C
#include <C_CkHttpW.h>
#include <C_CkHttpRequestW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttpW http;
    HCkHttpRequestW req;
    HCkHttpResponseW resp;
    HCkJsonObjectW json;
    const wchar_t *access_token;
    int expires_in;
    const wchar_t *token_type;
    const wchar_t *scope;

    success = FALSE;

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

    // Sends the following HTTP POST to get a MyInvois OAUth2 access token using client_credentials

    // POST /connect/token HTTP/1.1
    // Host: preprod-api.myinvois.hasil.gov.my
    // Accept: */*
    // Content-Length: <<variable>>
    // Content-Type: application/x-www-form-urlencoded
    // onbehalfof: C25845632020
    // 
    // client_id={YOUR_CLIENT_ID}&client_secret={YOUR_CLIENT_SECRET}&grant_type=client_credentials&scope=InvoicingAPI

    http = CkHttpW_Create();

    req = CkHttpRequestW_Create();

    CkHttpRequestW_AddHeader(req,L"onbehalfof",L"C25845632020");

    CkHttpRequestW_AddParam(req,L"grant_type",L"client_credentials");
    CkHttpRequestW_AddParam(req,L"client_id",L"YOUR_CLIENT_ID");
    CkHttpRequestW_AddParam(req,L"client_secret",L"YOUR_CLIENT_SECRET");
    CkHttpRequestW_AddParam(req,L"scope",L"InvoicingAPI");

    CkHttpRequestW_putHttpVerb(req,L"POST");
    CkHttpRequestW_putContentType(req,L"application/x-www-form-urlencoded");

    resp = CkHttpResponseW_Create();
    success = CkHttpW_HttpReq(http,L"https://preprod-api.myinvois.hasil.gov.my/connect/token",req,resp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkHttpRequestW_Dispose(req);
        CkHttpResponseW_Dispose(resp);
        return;
    }

    // Note: The returned access token is valid for a short amount of time.  Perhaps 1 hour.
    // The access token is used in the "Authorization: Bearer <access_token>" header in subsequent requests until it expires.
    // Your application would then need to get a new access token, and so on..

    wprintf(L"Response Status Code: %d\n",CkHttpResponseW_getStatusCode(resp));
    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",CkHttpResponseW_bodyStr(resp));

    // Here's a sample response:

    // {
    //   "access_token": "eyJhbGciOiJSUzI1...",
    //   "expires_in": 3600,
    //   "token_type": "Bearer",
    //   "scope": "InvoicingAPI"
    // }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_Load(json,CkHttpResponseW_bodyStr(resp));
    access_token = CkJsonObjectW_stringOf(json,L"access_token");
    expires_in = CkJsonObjectW_IntOf(json,L"expires_in");
    token_type = CkJsonObjectW_stringOf(json,L"token_type");
    scope = CkJsonObjectW_stringOf(json,L"scope");

    // To use an access token in a MyInvois API call, see Using a MyInvois Access Token in an API Request


    CkHttpW_Dispose(http);
    CkHttpRequestW_Dispose(req);
    CkHttpResponseW_Dispose(resp);
    CkJsonObjectW_Dispose(json);

    }