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(Unicode C) PayPal -- Get an OAuth 2.0 Access TokenDemonstrates how to send a request to get a PayPal OAuth2 access token. Sends an HTTP request equivalent to the following: curl https://api.sandbox.paypal.com/v1/oauth2/token \ -H "Accept: application/json" \ -H "Accept-Language: en_US" \ -u "Client-Id:Secret" \ -d "grant_type=client_credentials"
#include <C_CkRestW.h> #include <C_CkJsonObjectW.h> #include <C_CkDateTimeW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkRestW rest; BOOL bAutoReconnect; BOOL success; const wchar_t *responseStr; HCkJsonObjectW json; HCkDateTimeW dateTime; BOOL bLocalTime; int dtNow; HCkStringBuilderW sbResponse; BOOL bEmitBom; // Note: Requires Chilkat v9.5.0.64 or greater. // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. rest = CkRestW_Create(); // Make the initial connection. // A single REST object, once connected, can be used for many PayPal REST API calls. // The auto-reconnect indicates that if the already-established HTTPS connection is closed, // then it will be automatically re-established as needed. bAutoReconnect = TRUE; success = CkRestW_Connect(rest,L"api.sandbox.paypal.com",443,TRUE,bAutoReconnect); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); return; } // Duplicate this request: // curl https://api.sandbox.paypal.com/v1/oauth2/token \ // -H "Accept: application/json" \ // -H "Accept-Language: en_US" \ // -u "Client-Id:Secret" \ // -d "grant_type=client_credentials" CkRestW_AddHeader(rest,L"Accept",L"application/json"); CkRestW_AddHeader(rest,L"Accept-Language",L"en_US"); // For additional help on where to find your client ID and API secret, see PayPal Client_ID and API_Secret CkRestW_SetAuthBasic(rest,L"PAYPAL_REST_API_CLIENT_ID",L"PAYPAL_REST_API_SECRET"); CkRestW_AddQueryParam(rest,L"grant_type",L"client_credentials"); responseStr = CkRestW_fullRequestFormUrlEncoded(rest,L"POST",L"/v1/oauth2/token"); if (CkRestW_getLastMethodSuccess(rest) != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkRestW_Dispose(rest); return; } wprintf(L"%s\n",CkRestW_lastRequestHeader(rest)); // A sample response: // { // "scope": "https://api.paypal.com/v1/payments/.* https://api.paypal.com/v1/vault/credit-card https://api.paypal.com/v1/vault/credit-card/.*", // "access_token": "EEwJ6tF9x5WCIZDYzyZGaz6Khbw7raYRIBV_WxVvgmsG", // "token_type": "Bearer", // "app_id": "APP-6XR95014BA15863X", // "expires_in": 28800 // } json = CkJsonObjectW_Create(); CkJsonObjectW_Load(json,responseStr); CkJsonObjectW_putEmitCompact(json,FALSE); // Check the response status code. A 200 indicates success.. if (CkRestW_getResponseStatusCode(rest) != 200) { wprintf(L"%s\n",CkJsonObjectW_emit(json)); wprintf(L"Failed.\n"); CkRestW_Dispose(rest); CkJsonObjectW_Dispose(json); return; } // Given that the access token expires in approx 8 hours, // let's record the date/time this token was created. // This will allow us to know beforehand if the token // is expired (and we can then fetch a new token). dateTime = CkDateTimeW_Create(); bLocalTime = FALSE; dtNow = CkDateTimeW_GetAsUnixTime(dateTime,bLocalTime); CkJsonObjectW_AppendInt(json,L"tokenCreateTimeUtc",dtNow); // Examine the access token and save to a file. wprintf(L"Access Token: %s\n",CkJsonObjectW_stringOf(json,L"access_token")); wprintf(L"Full JSON Response:\n"); wprintf(L"%s\n",CkJsonObjectW_emit(json)); sbResponse = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbResponse,CkJsonObjectW_emit(json)); bEmitBom = FALSE; CkStringBuilderW_WriteFile(sbResponse,L"qa_data/tokens/paypal.json",L"utf-8",bEmitBom); CkRestW_Dispose(rest); CkJsonObjectW_Dispose(json); CkDateTimeW_Dispose(dateTime); CkStringBuilderW_Dispose(sbResponse); } |
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