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(Unicode C) Get Ebay OAuth2 Token using Client Credentials Grant FlowSee more eBay ExamplesDemonstrates how to get a Ebay OAuth2 access token using the client credentials grant flow. There are two ways of "minting" an OAuth2 access token.
For more information, see https://developer.ebay.com/api-docs/static/oauth-client-credentials-grant.html
#include <C_CkHttpW.h> #include <C_CkHttpRequestW.h> #include <C_CkHttpResponseW.h> #include <C_CkStringBuilderW.h> #include <C_CkJsonObjectW.h> void ChilkatSample(void) { HCkHttpW http; BOOL success; HCkHttpRequestW req; const wchar_t *scope; HCkHttpResponseW resp; HCkStringBuilderW sbResponseBody; HCkJsonObjectW jResp; int respStatusCode; const wchar_t *access_token; int expires_in; const wchar_t *token_type; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http = CkHttpW_Create(); // Implements the following CURL command: // curl -X POST 'https://api.sandbox.ebay.com/identity/v1/oauth2/token' \ // -H 'Content-Type: application/x-www-form-urlencoded' \ // -H 'Authorization: Basic UkVTVFRlc3...wZi1hOGZhLTI4MmY=' \ // -d 'grant_type=client_credentials&scope=https%3A%2F%2Fapi.ebay.com%2Foauth%2Fapi_scope' // Use the following online tool to generate HTTP code from a CURL command // Convert a cURL Command to HTTP Source Code req = CkHttpRequestW_Create(); CkHttpRequestW_putHttpVerb(req,L"POST"); CkHttpRequestW_putPath(req,L"/identity/v1/oauth2/token"); CkHttpRequestW_putContentType(req,L"application/x-www-form-urlencoded"); CkHttpRequestW_AddParam(req,L"grant_type",L"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 scope = L"https://api.ebay.com/oauth/api_scope https://api.ebay.com/oauth/api_scope/buy.order.readonly https://api.ebay.com/oauth/api_scope/buy.guest.order https://api.ebay.com/oauth/api_scope/sell.marketing.readonly https://api.ebay.com/oauth/api_scope/sell.marketing https://api.ebay.com/oauth/api_scope/sell.inventory.readonly https://api.ebay.com/oauth/api_scope/sell.inventory https://api.ebay.com/oauth/api_scope/sell.account.readonly https://api.ebay.com/oauth/api_scope/sell.account https://api.ebay.com/oauth/api_scope/sell.fulfillment.readonly https://api.ebay.com/oauth/api_scope/sell.fulfillment https://api.ebay.com/oauth/api_scope/sell.analytics.readonly https://api.ebay.com/oauth/api_scope/sell.marketplace.insights.readonly https://api.ebay.com/oauth/api_scope/commerce.catalog.readonly https://api.ebay.com/oauth/api_scope/buy.shopping.cart https://api.ebay.com/oauth/api_scope/buy.offer.auction"; CkHttpRequestW_AddParam(req,L"scope",scope); // Setting these properties causes the Authorization: Basic UkVTVFRlc3...wZi1hOGZhLTI4MmY= // header to be added. CkHttpW_putLogin(http,L"EBAY_CLIENT_ID"); CkHttpW_putPassword(http,L"EBAY_CLIENT_SECRET"); CkHttpW_putBasicAuth(http,TRUE); resp = CkHttpW_PostUrlEncoded(http,L"https://api.sandbox.ebay.com/identity/v1/oauth2/token",req); if (CkHttpW_getLastMethodSuccess(http) == FALSE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkHttpW_Dispose(http); CkHttpRequestW_Dispose(req); return; } sbResponseBody = CkStringBuilderW_Create(); CkHttpResponseW_GetBodySb(resp,sbResponseBody); jResp = CkJsonObjectW_Create(); CkJsonObjectW_LoadSb(jResp,sbResponseBody); CkJsonObjectW_putEmitCompact(jResp,FALSE); wprintf(L"Response Body:\n"); wprintf(L"%s\n",CkJsonObjectW_emit(jResp)); respStatusCode = CkHttpResponseW_getStatusCode(resp); wprintf(L"Response Status Code = %d\n",respStatusCode); if (respStatusCode >= 400) { wprintf(L"Response Header:\n"); wprintf(L"%s\n",CkHttpResponseW_header(resp)); wprintf(L"Failed.\n"); CkHttpResponseW_Dispose(resp); CkHttpW_Dispose(http); CkHttpRequestW_Dispose(req); CkStringBuilderW_Dispose(sbResponseBody); CkJsonObjectW_Dispose(jResp); return; } CkHttpResponseW_Dispose(resp); // Sample JSON response: // (Sample code for parsing the JSON response is shown below) // { // "access_token": "v^1.1#i^1#p^1#r^0#I^3#f^0#t^H4s ... wu67e3xAhskz4DAAA", // "expires_in": 7200, // "token_type": "Application Access Token" // } // Sample code for parsing the JSON response... // Use the following online tool to generate parsing code from sample JSON: // Generate Parsing Code from JSON // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat. // See this example explaining how this memory should be used: const char * functions. access_token = CkJsonObjectW_stringOf(jResp,L"access_token"); expires_in = CkJsonObjectW_IntOf(jResp,L"expires_in"); token_type = CkJsonObjectW_stringOf(jResp,L"token_type"); CkHttpW_Dispose(http); CkHttpRequestW_Dispose(req); CkStringBuilderW_Dispose(sbResponseBody); CkJsonObjectW_Dispose(jResp); } |
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