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(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_CkRest.h> #include <C_CkJsonObject.h> #include <C_CkDateTime.h> #include <C_CkStringBuilder.h> void ChilkatSample(void) { HCkRest rest; BOOL bAutoReconnect; BOOL success; const char *responseStr; HCkJsonObject json; HCkDateTime dateTime; BOOL bLocalTime; int dtNow; HCkStringBuilder 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 = CkRest_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 = CkRest_Connect(rest,"api.sandbox.paypal.com",443,TRUE,bAutoReconnect); if (success != TRUE) { printf("%s\n",CkRest_lastErrorText(rest)); CkRest_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" CkRest_AddHeader(rest,"Accept","application/json"); CkRest_AddHeader(rest,"Accept-Language","en_US"); // For additional help on where to find your client ID and API secret, see PayPal Client_ID and API_Secret CkRest_SetAuthBasic(rest,"PAYPAL_REST_API_CLIENT_ID","PAYPAL_REST_API_SECRET"); CkRest_AddQueryParam(rest,"grant_type","client_credentials"); responseStr = CkRest_fullRequestFormUrlEncoded(rest,"POST","/v1/oauth2/token"); if (CkRest_getLastMethodSuccess(rest) != TRUE) { printf("%s\n",CkRest_lastErrorText(rest)); CkRest_Dispose(rest); return; } printf("%s\n",CkRest_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 = CkJsonObject_Create(); CkJsonObject_Load(json,responseStr); CkJsonObject_putEmitCompact(json,FALSE); // Check the response status code. A 200 indicates success.. if (CkRest_getResponseStatusCode(rest) != 200) { printf("%s\n",CkJsonObject_emit(json)); printf("Failed.\n"); CkRest_Dispose(rest); CkJsonObject_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 = CkDateTime_Create(); bLocalTime = FALSE; dtNow = CkDateTime_GetAsUnixTime(dateTime,bLocalTime); CkJsonObject_AppendInt(json,"tokenCreateTimeUtc",dtNow); // Examine the access token and save to a file. printf("Access Token: %s\n",CkJsonObject_stringOf(json,"access_token")); printf("Full JSON Response:\n"); printf("%s\n",CkJsonObject_emit(json)); sbResponse = CkStringBuilder_Create(); CkStringBuilder_Append(sbResponse,CkJsonObject_emit(json)); bEmitBom = FALSE; CkStringBuilder_WriteFile(sbResponse,"qa_data/tokens/paypal.json","utf-8",bEmitBom); CkRest_Dispose(rest); CkJsonObject_Dispose(json); CkDateTime_Dispose(dateTime); CkStringBuilder_Dispose(sbResponse); } |
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