Re: Re: OAuth 2.0 token

I want this code in c# any one please help me..

On Tuesday, June 16, 2015 at 6:26:42 AM UTC+5:30, James Bryant wrote:
>
> Thanks!
>
> On Sunday, June 14, 2015 at 7:45:24 PM UTC-5, Gramps Gramps wrote:
>>
>> HI, sure! :)
>>
>>  
>>
>> HEre it is (have fun):
>>
>>  
>>
>>  
>>
>> package org.gizmo;
>>
>>  
>>
>> import java.util.Arrays;
>>
>> import java.util.Scanner;
>>
>>  
>>
>> import com.google.api.client.auth.oauth2.AuthorizationCodeFlow;
>>
>> import com.google.api.client.auth.oauth2.AuthorizationCodeRequestUrl;
>>
>> import com.google.api.client.auth.oauth2.AuthorizationCodeTokenRequest;
>>
>> import com.google.api.client.auth.oauth2.RefreshTokenRequest;
>>
>> import com.google.api.client.auth.oauth2.TokenResponse;
>>
>> import 
>> com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
>>
>> import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
>>
>> import com.google.api.client.http.BasicAuthentication;
>>
>> import com.google.api.client.http.GenericUrl;
>>
>> import com.google.api.client.http.HttpTransport;
>>
>> import com.google.api.client.http.javanet.NetHttpTransport;
>>
>> import com.google.api.client.json.JsonFactory;
>>
>> import com.google.api.client.json.jackson2.JacksonFactory;
>>
>>  
>>
>> public class GoogleOauth2Authentication
>>
>> {
>>
>>  
>>
>>     /**
>>
>>      * This method performs OAuth2 authentication on Google Servers
>>
>>      * 
>>
>>      * @return
>>
>>      */
>>
>>     public static GoogleCredential GoogleOauth2Authentication(String 
>> googleServiceScope, String googleRefreshKey, String googleRefreshKeyFile)
>>
>>     {
>>
>>         String GOOGLE_REFRESH_TOKEN = "";
>>
>>         String GOOGLE_ACCESS_TOKEN = "";
>>
>>         
>>
>>         try
>>
>>         {
>>
>>         
>>
>>         HttpTransport httpTransport = new NetHttpTransport();
>>
>>         JsonFactory jsonFactory = new JacksonFactory();
>>
>>         TokenResponse tokenResponse = new TokenResponse();
>>
>>  
>>
>>         //Check of we have a previous Refresh Token cached
>>
>>         if (googleRefreshKey.length() == 0)
>>
>>             {
>>
>>             //No Google OAuth2 Key has been previously cached
>>
>>         
>>
>>             //Request the user to grant access to the 
>> Picasa(Blogger/other Resource (uses the Google Authentication servers)
>>
>>             AuthorizationCodeFlow.Builder codeFlowBuilder = 
>>
>>                             new 
>> GoogleAuthorizationCodeFlow.Builder(httpTransport, 
>>
>>                                     jsonFactory, 
>>
>>                                     Config.GOOGLE_CLIENT_ID, 
>>
>>                                     Config.GOOGLE_CLIENT_SECRET, 
>>
>>                                     Arrays.asList(googleServiceScope));
>>
>>             
>>
>>             AuthorizationCodeFlow codeFlow = codeFlowBuilder.build();
>>
>>             AuthorizationCodeRequestUrl authorizationUrl = 
>> codeFlow.newAuthorizationUrl();
>>
>>             authorizationUrl.setRedirectUri(Config.GOOGLE_REDIRECT_URI);
>>
>>             
>>
>>             System.out.println("Hi, you need to grant access to the 
>> Google Service: " + googleServiceScope + "\n");
>>
>>             System.out.println("Go to the following address (using your 
>> web browser):\n" + authorizationUrl);
>>
>>             System.out.println("Login using the account which you use to 
>> access the service and 'Grance Access'");
>>
>>             System.out.print("You will get a code, just copy+paste it in 
>> here:>> ");
>>
>>             String code = new Scanner(System.in).nextLine();
>>
>>             System.in.close();
>>
>>             
>>
>>             //Use the code returned by the Google Authentication Server 
>> to generate an Access Code
>>
>>             AuthorizationCodeTokenRequest tokenRequest = 
>> codeFlow.newTokenRequest(code);
>>
>>             tokenRequest.setRedirectUri(Config.GOOGLE_REDIRECT_URI);
>>
>>             tokenResponse = tokenRequest.execute();
>>
>>             
>>
>>             GOOGLE_REFRESH_TOKEN = tokenResponse.getRefreshToken();
>>
>>             GOOGLE_ACCESS_TOKEN = tokenResponse.getAccessToken();
>>
>>             
>>
>>             //Store the Refresh Token for later usage (this avoid having 
>> to request the user to 
>>
>>             //Grant access to the application via the webbrowser again
>>
>>             GizmoUtil.saveFile(googleRefreshKeyFile, 
>> GOOGLE_REFRESH_TOKEN);
>>
>>             
>>
>>  
>>
>>             }
>>
>>         else
>>
>>             {
>>
>>             //There is a Google OAuth2 Key cached previously.
>>
>>             //Use the refresh token to get a new Access Token
>>
>>             
>>
>>             //Get the cached Refresh Token
>>
>>             GOOGLE_REFRESH_TOKEN = new String(googleRefreshKey);
>>
>>             
>>
>>             //Now we need to get a new Access Token using our previously 
>> cached Refresh Token
>>
>>             RefreshTokenRequest refreshTokenRequest = new 
>> RefreshTokenRequest(httpTransport, 
>>
>>                                                              jsonFactory, 
>>
>>                                                              new 
>> GenericUrl(Config.GOOGLE_TOKEN_SERVER_URL), 
>>
>>
>>                                                              GOOGLE_REFRESH_TOKEN);
>>
>>             
>>
>>             refreshTokenRequest.setClientAuthentication(new 
>> BasicAuthentication(Config.GOOGLE_CLIENT_ID, Config.GOOGLE_CLIENT_SECRET));
>>
>>             
>> refreshTokenRequest.setScopes(Arrays.asList(googleServiceScope));
>>
>>             
>>
>>             tokenResponse = refreshTokenRequest.execute();
>>
>>             
>>
>>             //Get and set the Refresn the Access Tokens
>>
>>             GOOGLE_ACCESS_TOKEN = new 
>> String(tokenResponse.getAccessToken());
>>
>>             }
>>
>>  
>>
>>         //At this point we have a valid Google Access Token
>>
>>         //Let us access Picasa then!
>>
>>         GoogleCredential credential = new GoogleCredential.Builder()
>>
>>                 .setClientSecrets(Config.GOOGLE_CLIENT_ID, 
>> Config.GOOGLE_CLIENT_SECRET)
>>
>>                 .setJsonFactory(jsonFactory)
>>
>>                 .setTransport(httpTransport)
>>
>>                 .build()
>>
>>                 .setAccessToken(GOOGLE_ACCESS_TOKEN)
>>
>>                 .setRefreshToken(GOOGLE_REFRESH_TOKEN);
>>
>>         
>>
>>         //Return the credential object
>>
>>         return credential;
>>
>>         }
>>
>>         catch (Exception e)
>>
>>             {
>>
>>             return null;
>>
>>             }  
>>
>>     }
>>
>> }.
>>
>

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