C

Get eBay Application Token

See more eBay Examples

This example shows how to request an eBay Application token. C

#include <C_CkHttp.h>
#include <C_CkHttpRequest.h>
#include <C_CkHttpResponse.h>
#include <C_CkJsonObject.h>
#include <C_CkDateTime.h>
#include <C_CkFileAccess.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttp http;
    HCkHttpRequest req;
    const char *endPoint;
    HCkHttpResponse resp;
    HCkJsonObject json;
    const char *accessToken;
    HCkDateTime dtExpire;
    HCkFileAccess fac;

    success = FALSE;

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

    //  See the Ebay documentation about Access token types
    //  Also see the Ebay documentation about client credentials grant flow

    http = CkHttp_Create();

    //  If using the sandbox, the target endpoint will be:
    //  POST https://api.sandbox.ebay.com/identity/v1/oauth2/token

    //  If using the production (live) system, the target endpoint will be:
    //  POST https://api.ebay.com/identity/v1/oauth2/token

    //  The eBay client_id and client_secret needs to be sent
    //  in a Basic Authorization  request header, which has this format:
    //  Authorization: Basic <B64_encoded_oauth_credentials>

    //  Chilkat takes care of it.  You only need to set the Login = client_id,
    //  and password = client_secret, and indicate you want "Basic" HTTP Authorization.
    CkHttp_putLogin(http,"EBAY_CLIENT_ID");
    CkHttp_putPassword(http,"EBAY_CLIENT_SECRET");
    CkHttp_putBasicAuth(http,TRUE);

    //  Let's do the following POST:

    //    HTTP method:   POST
    //    URL (Sandbox): https://api.sandbox.ebay.com/identity/v1/oauth2/token
    //  
    //    HTTP headers:
    //      Content-Type = application/x-www-form-urlencoded
    //      Authorization = Basic <B64-encoded-oauth-credentials>
    //  
    //    Request body (wrapped for readability):
    //      grant_type=client_credentials&
    //      redirect_uri=<RuName-value>&
    //      scope=<SPACE separated list of scopes>
    //  

    //  Create an HttpRequest object to hold the request params.
    req = CkHttpRequest_Create();
    CkHttpRequest_putHttpVerb(req,"POST");
    CkHttpRequest_AddParam(req,"grant_type","client_credentials");

    //  The scope query param indicates the access to be provided by the token.
    //  Multiple scopes can be specified by separating each with a SPACE char.
    //  See the Ebay OAuth scopes documentation

    CkHttpRequest_AddParam(req,"scope","https://api.ebay.com/oauth/api_scope");

    endPoint = "https://api.sandbox.ebay.com/identity/v1/oauth2/token";
    CkHttpRequest_putContentType(req,"application/x-www-form-urlencoded");

    resp = CkHttpResponse_Create();
    success = CkHttp_HttpReq(http,endPoint,req,resp);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkHttpRequest_Dispose(req);
        CkHttpResponse_Dispose(resp);
        return;
    }

    //  The response is JSON..
    json = CkJsonObject_Create();
    CkJsonObject_Load(json,CkHttpResponse_bodyStr(resp));
    CkJsonObject_putEmitCompact(json,FALSE);

    //  If the response status code is not 200, then it failed.
    printf("Response status code = %d\n",CkHttpResponse_getStatusCode(resp));
    if (CkHttpResponse_getStatusCode(resp) != 200) {
        printf("%s\n",CkJsonObject_emit(json));
        printf("Failed.\n");
        CkHttp_Dispose(http);
        CkHttpRequest_Dispose(req);
        CkHttpResponse_Dispose(resp);
        CkJsonObject_Dispose(json);
        return;
    }

    //  We successfully retrieved an eBay access token.
    //  The actual access token string can be parsed from the JSON like this:
    accessToken = CkJsonObject_stringOf(json,"access_token");

    //  This application token is only valid for 7200 seconds (2 hours).  We'll want to refresh
    //  it before it expires.  (There is an online example for that..)
    //  For now, let's save the JSON to a file for our application to use.

    //  But before doing that, let's add to the JSON an expiration timestamp
    //  so we know when to refresh the token.
    dtExpire = CkDateTime_Create();
    CkDateTime_SetFromCurrentSystemTime(dtExpire);
    CkDateTime_AddSeconds(dtExpire,CkJsonObject_IntOf(json,"expires_in"));
    CkJsonObject_AppendString(json,"expire_time",CkDateTime_getAsTimestamp(dtExpire,FALSE));

    //  Persist the JSON to a file.
    fac = CkFileAccess_Create();
    success = CkFileAccess_WriteEntireTextFile(fac,"qa_data/tokens/ebay.json",CkJsonObject_emit(json),"utf-8",FALSE);
    if (success != TRUE) {
        printf("%s\n",CkFileAccess_lastErrorText(fac));
        printf("Failed to save eBay Application token to file.\n");
        CkHttp_Dispose(http);
        CkHttpRequest_Dispose(req);
        CkHttpResponse_Dispose(resp);
        CkJsonObject_Dispose(json);
        CkDateTime_Dispose(dtExpire);
        CkFileAccess_Dispose(fac);
        return;
    }

    printf("%s\n",CkJsonObject_emit(json));
    printf("Success.\n");

    //  The output of this example is:

    //  	{ 
    //  	  "access_token": "v^1.1#i^1#p^1#I^3#r^0# ... Ajp1BQhJDgAA",
    //  	  "token_type": "Application Access Token",
    //  	  "expires_in": 7200,
    //  	  "refresh_token": "N/A",
    //  	  "expire_time": "2017-04-16T14:44:20Z"
    //  	}
    //  
    //  	Success.
    //  


    CkHttp_Dispose(http);
    CkHttpRequest_Dispose(req);
    CkHttpResponse_Dispose(resp);
    CkJsonObject_Dispose(json);
    CkDateTime_Dispose(dtExpire);
    CkFileAccess_Dispose(fac);

    }