com.google.api.client.googleapis.extensions.java6.auth.oauth2.GooglePromptReceiver Java Examples

/** Authorizes the installed application to access user's protected data. */
private static Credential authorize() throws Exception {
  // Load client secrets.
  GoogleClientSecrets clientSecrets = null;
  try {
    clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
        new InputStreamReader(StorageSample.class.getResourceAsStream(String.format("/%s",CLIENT_SECRET_FILENAME))));
    if (clientSecrets.getDetails().getClientId() == null ||
        clientSecrets.getDetails().getClientSecret() == null) {
        throw new Exception("client_secrets not well formed.");
    }
  } catch (Exception e) {
    System.out.println("Problem loading client_secrets.json file. Make sure it exists, you are " + 
                      "loading it with the right path, and a client ID and client secret are " +
                      "defined in it.\n" + e.getMessage());
    System.exit(1);
  }

  // Set up authorization code flow.
  // Ask for only the permissions you need. Asking for more permissions will
  // reduce the number of users who finish the process for giving you access
  // to their accounts. It will also increase the amount of effort you will
  // have to spend explaining to users what you are doing with their data.
  // Here we are listing all of the available scopes. You should remove scopes
  // that you are not actually using.
  Set<String> scopes = new HashSet<String>();
  scopes.add(StorageScopes.DEVSTORAGE_FULL_CONTROL);
  scopes.add(StorageScopes.DEVSTORAGE_READ_ONLY);
  scopes.add(StorageScopes.DEVSTORAGE_READ_WRITE);

  GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
      httpTransport, JSON_FACTORY, clientSecrets, scopes)
      .setDataStoreFactory(dataStoreFactory)
      .build();
  // Authorize.
  VerificationCodeReceiver receiver = 
      AUTH_LOCAL_WEBSERVER ? new LocalServerReceiver() : new GooglePromptReceiver();
  return new AuthorizationCodeInstalledApp(flow, receiver).authorize("user");    
}
 

/**
 * Initialized OAuth2 credential for the "installed application" flow; where the credential
 * typically represents an actual end user (instead of a service account), and is stored as a
 * refresh token in a local FileCredentialStore.
 *
 * @param scopes list of well-formed scopes desired in the credential
 * @param transport The HttpTransport used for authorization
 * @return credential with desired scopes, possibly obtained from loading {@code filePath}.
 * @throws IOException on IO error
 */
private Credential getCredentialFromFileCredentialStoreForInstalledApp(
    List<String> scopes, HttpTransport transport) throws IOException {
  logger.atFine().log(
      "getCredentialFromFileCredentialStoreForInstalledApp(%s, %s) from '%s'",
      scopes, transport, options.getOAuthCredentialFile());

  // Initialize client secrets.
  GoogleClientSecrets.Details details =
      new GoogleClientSecrets.Details()
          .setClientId(options.getClientId().value())
          .setClientSecret(options.getClientSecret().value());
  GoogleClientSecrets clientSecrets = new GoogleClientSecrets().setInstalled(details);

  // Set up file credential store.
  FileCredentialStore credentialStore =
      new FileCredentialStore(new File(options.getOAuthCredentialFile()), JSON_FACTORY);

  // Set up authorization code flow.
  GoogleAuthorizationCodeFlow flow =
      new GoogleAuthorizationCodeFlow.Builder(transport, JSON_FACTORY, clientSecrets, scopes)
          .setCredentialStore(credentialStore)
          .setRequestInitializer(new CredentialHttpRetryInitializer())
          .setTokenServerUrl(new GenericUrl(options.getTokenServerUrl()))
          .build();

  // Authorize access.
  return new AuthorizationCodeInstalledApp(flow, new GooglePromptReceiver()).authorize("user");
}