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(Unicode C) Get Ebay OAuth2 in a Desktop AppSee more eBay ExamplesDemonstrates how to get a Ebay OAuth2 access token from a desktop application or script. There are two ways of "minting" an OAuth2 access token.
For more information, see https://developer.ebay.com/api-docs/static/oauth-authorization-code-grant.html
#include <C_CkOAuth2W.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkOAuth2W oauth2; BOOL success; const wchar_t *url; int numMsWaited; HCkStringBuilderW sbJson; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. oauth2 = CkOAuth2W_Create(); // See the Ebay documentation about Access token types // Also see the Ebay documentation about authorization code grant flow // Ebay OAuth2 only allows for SSL/TLS with localhost redirect URLs (i.e. https://localhost:<portNumber>/) // // We want the access token to come back to your desktop app, but without TLS (the redirect from your local browser to // your application does not traverse a network (both are on localhost), and therefore no TLS is necessary). // To get around the https problem, you'll need to script // on your web server to respond with it's own redirect. Think of it this way: If Ebay won't redirect to http://localhost:<portNumber>, // then just setup a web server script that will send a redirect response to http://localhost:<portNumber> // This script can be written in C#, PHP, or whatever desired. It must include the query string in the redirection. // For example, in PHP your script would look like this: // <?php // header( 'Location: http://localhost:3017?' . $_SERVER['QUERY_STRING'] ); // ?> // Ebay is odd in that it wants the redirect URL indirectly. // You need to provide the RuName (eBay Redirect URL name) CkOAuth2W_putAppCallbackUrl(oauth2,L"Chilkat_Softwar-ChilkatS-chilka-qydjs"); CkOAuth2W_putListenPort(oauth2,3017); CkOAuth2W_putAuthorizationEndpoint(oauth2,L"https://auth.sandbox.ebay.com/oauth2/authorize"); CkOAuth2W_putTokenEndpoint(oauth2,L"https://api.sandbox.ebay.com/identity/v1/oauth2/token"); // Replace these with actual values. CkOAuth2W_putClientId(oauth2,L"EBAY_CLIENT_ID"); CkOAuth2W_putClientSecret(oauth2,L"EBAY_CLIENT_SECRET"); CkOAuth2W_putUseBasicAuth(oauth2,TRUE); CkOAuth2W_putCodeChallenge(oauth2,FALSE); // 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 CkOAuth2W_putScope(oauth2,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"); // Begin the OAuth2 three-legged flow. This returns a URL that should be loaded in a browser. url = CkOAuth2W_startAuth(oauth2); if (CkOAuth2W_getLastMethodSuccess(oauth2) != TRUE) { wprintf(L"%s\n",CkOAuth2W_lastErrorText(oauth2)); CkOAuth2W_Dispose(oauth2); return; } wprintf(L"url = %s\n",url); // At this point, your application should load the URL in a browser. // For example, // in C#: System.Diagnostics.Process.Start(url); // in Java: Desktop.getDesktop().browse(new URI(url)); // in VBScript: Set wsh=WScript.CreateObject("WScript.Shell") // wsh.Run url // in Xojo: ShowURL(url) (see http://docs.xojo.com/index.php/ShowURL) // in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl // The Ebay account owner would interactively accept or deny the authorization request. // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // Now wait for the authorization. // We'll wait for a max of 60 seconds. numMsWaited = 0; while ((numMsWaited < 60000) && (CkOAuth2W_getAuthFlowState(oauth2) < 3)) { CkOAuth2W_SleepMs(oauth2,100); numMsWaited = numMsWaited + 100; } // If there was no response from the browser within 60 seconds, then // the AuthFlowState will be equal to 1 or 2. // 1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser. // 2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response. // In that case, cancel the background task started in the call to StartAuth. if (CkOAuth2W_getAuthFlowState(oauth2) < 3) { CkOAuth2W_Cancel(oauth2); wprintf(L"No response from the browser!\n"); CkOAuth2W_Dispose(oauth2); return; } // Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred // The possible AuthFlowState values are: // 3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property. // 4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property. // 5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property. if (CkOAuth2W_getAuthFlowState(oauth2) == 5) { wprintf(L"OAuth2 failed to complete.\n"); wprintf(L"%s\n",CkOAuth2W_failureInfo(oauth2)); CkOAuth2W_Dispose(oauth2); return; } if (CkOAuth2W_getAuthFlowState(oauth2) == 4) { wprintf(L"OAuth2 authorization was denied.\n"); wprintf(L"%s\n",CkOAuth2W_accessTokenResponse(oauth2)); CkOAuth2W_Dispose(oauth2); return; } if (CkOAuth2W_getAuthFlowState(oauth2) != 3) { wprintf(L"Unexpected AuthFlowState:%d\n",CkOAuth2W_getAuthFlowState(oauth2)); CkOAuth2W_Dispose(oauth2); return; } // Save the full JSON access token response to a file. sbJson = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbJson,CkOAuth2W_accessTokenResponse(oauth2)); CkStringBuilderW_WriteFile(sbJson,L"qa_data/tokens/ebay-access-token.json",L"utf-8",FALSE); // The full JSON received looks like this: // { // "access_token": "v^1.1#i^1#p^3#f^0#I^3#r^0#t^H4sIAAA... 3+fBIAAA==", // "expires_in": 7200, // "refresh_token": "v^1.1#i^1#f^0#p^3#r^1#I^3#t^Ul4xMF8wOkIxQzAzQjg1ND ... fMSNFXjEyODQ=", // "refresh_token_expires_in": 47304000, // "token_type": "User Access Token" // } wprintf(L"OAuth2 authorization granted!\n"); wprintf(L"Access Token = %s\n",CkOAuth2W_accessToken(oauth2)); CkOAuth2W_Dispose(oauth2); CkStringBuilderW_Dispose(sbJson); } |
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