Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(C++) Google Drive Refresh Access TokenDemonstrates how to automatically refresh the access token when it expires.
#include <CkJsonObject.h> #include <CkOAuth2.h> #include <CkRest.h> #include <CkFileAccess.h> void ChilkatSample(void) { bool success = true; // It requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This example uses a previously obtained access token having permission for the // Google Drive scope. // The access token (and refresh token) was previously saved to a JSON file with this format: // See Get Google Drive OAuth2 Access Token // { // "access_token": "ya29.Gls-BsdxTWuenChv ... yzVIrXikkLxu5T6dy4I6GjADFardoz4Lruw", // "expires_in": 3600, // "refresh_token": "1/tMBJ ... 27D-Hk6rpQYBA", // "scope": "https://www.googleapis.com/auth/drive", // "token_type": "Bearer" // } CkJsonObject json; const char *tokenFilePath = "qa_data/tokens/googleDrive.json"; json.LoadFile(tokenFilePath); CkOAuth2 oauth2; oauth2.put_AccessToken(json.stringOf("access_token")); oauth2.put_RefreshToken(json.stringOf("refresh_token")); CkRest rest; // Connect using TLS. bool bAutoReconnect = true; success = rest.Connect("www.googleapis.com",443,true,bAutoReconnect); // Provide the authentication credentials (i.e. the access token) rest.SetAuthOAuth2(oauth2); // We'll test with a simple request to empty trash. // If our access token expired, we'll get a 401 response.. const char *jsonResponse = rest.fullRequestNoBody("DELETE","/drive/v3/files/trash"); if (rest.get_LastMethodSuccess() != true) { std::cout << rest.lastErrorText() << "\r\n"; return; } // If the access token expired, we'll get a 401 response status with this response body: // { // "error": { // "errors": [ // { // "domain": "global", // "reason": "authError", // "message": "Invalid Credentials", // "locationType": "header", // "location": "Authorization" // } // ], // "code": 401, // "message": "Invalid Credentials" // } // } if (rest.get_ResponseStatusCode() == 401) { std::cout << "Refreshing access token..." << "\r\n"; oauth2.put_AuthorizationEndpoint("https://accounts.google.com/o/oauth2/v2/auth"); oauth2.put_TokenEndpoint("https://www.googleapis.com/oauth2/v4/token"); // Replace these with actual values. oauth2.put_ClientId("GOOGLE-CLIENT-ID"); oauth2.put_ClientSecret("GOOGLE-CLIENT-SECRET"); oauth2.put_Scope("https://www.googleapis.com/auth/drive"); // Use OAuth2 to refresh the access token. success = oauth2.RefreshAccessToken(); if (success != true) { std::cout << oauth2.lastErrorText() << "\r\n"; return; } // Save the new access token to our XML file (so we can refresh it again when needed). json.UpdateString("access_token",oauth2.accessToken()); CkFileAccess fac; fac.WriteEntireTextFile(tokenFilePath,json.emit(),"utf-8",false); std::cout << "Access Token Refreshed!" << "\r\n"; // Retry the request with the new access token.. jsonResponse = rest.fullRequestNoBody("DELETE","/drive/v3/files/trash"); if (rest.get_LastMethodSuccess() != true) { std::cout << rest.lastErrorText() << "\r\n"; return; } } // A successful response will have a status code equal to 204 and the response body is empty. // (If not successful, then there should be a JSON response body with information..) if (rest.get_ResponseStatusCode() != 204) { std::cout << "response status code = " << rest.get_ResponseStatusCode() << "\r\n"; std::cout << "response status text = " << rest.responseStatusText() << "\r\n"; std::cout << "response header: " << rest.responseHeader() << "\r\n"; std::cout << "response JSON: " << jsonResponse << "\r\n"; return; } std::cout << "Trash Emptied!" << "\r\n"; } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.