git.basschouten.com Git - openhab-addons.git/blob

   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.boschindego.internal;
  14
  15 import static org.openhab.binding.boschindego.internal.BoschIndegoBindingConstants.*;
  16
  17 import java.io.IOException;
  18
  19 import org.eclipse.jdt.annotation.NonNullByDefault;
  20 import org.openhab.binding.boschindego.internal.exceptions.IndegoAuthenticationException;
  21 import org.openhab.core.auth.client.oauth2.AccessTokenResponse;
  22 import org.openhab.core.auth.client.oauth2.OAuthClientService;
  23 import org.openhab.core.auth.client.oauth2.OAuthException;
  24 import org.openhab.core.auth.client.oauth2.OAuthResponseException;
  25
  26 /**
  27  * The {@link AuthorizationController} acts as a bridge between
  28  * {@link OAuthClientService} and {@link IndegoController}.
  29  *
  30  * @author Jacob Laursen - Initial contribution
  31  */
  32 @NonNullByDefault
  33 public class AuthorizationController implements AuthorizationProvider {
  34
  35     private static final String BEARER = "Bearer ";
  36
  37     private final AuthorizationListener listener;
  38
  39     private OAuthClientService oAuthClientService;
  40
  41     public AuthorizationController(OAuthClientService oAuthClientService, AuthorizationListener listener) {
  42         this.oAuthClientService = oAuthClientService;
  43         this.listener = listener;
  44     }
  45
  46     public void setOAuthClientService(OAuthClientService oAuthClientService) {
  47         this.oAuthClientService = oAuthClientService;
  48     }
  49
  50     @Override
  51     public String getAuthorizationHeader() throws IndegoAuthenticationException {
  52         final AccessTokenResponse accessTokenResponse;
  53         try {
  54             accessTokenResponse = getAccessToken();
  55         } catch (OAuthException | OAuthResponseException e) {
  56             var throwable = new IndegoAuthenticationException(
  57                     "Error fetching access token. Invalid authcode? Please generate a new one -> "
  58                             + getAuthorizationUrl(),
  59                     e);
  60             listener.onFailedAuthorization(throwable);
  61             throw throwable;
  62         } catch (IOException e) {
  63             var throwable = new IndegoAuthenticationException("An unexpected IOException occurred: " + e.getMessage(),
  64                     e);
  65             listener.onFailedAuthorization(throwable);
  66             throw throwable;
  67         }
  68
  69         String accessToken = accessTokenResponse.getAccessToken();
  70         if (accessToken == null || accessToken.isEmpty()) {
  71             var throwable = new IndegoAuthenticationException(
  72                     "No access token. Is this thing authorized? -> " + getAuthorizationUrl());
  73             listener.onFailedAuthorization(throwable);
  74             throw throwable;
  75         }
  76         if (accessTokenResponse.getRefreshToken() == null || accessTokenResponse.getRefreshToken().isEmpty()) {
  77             var throwable = new IndegoAuthenticationException(
  78                     "No refresh token. Please reauthorize -> " + getAuthorizationUrl());
  79             listener.onFailedAuthorization(throwable);
  80             throw throwable;
  81         }
  82
  83         listener.onSuccessfulAuthorization();
  84
  85         return BEARER + accessToken;
  86     }
  87
  88     public AccessTokenResponse getAccessToken() throws OAuthException, OAuthResponseException, IOException {
  89         AccessTokenResponse accessTokenResponse = oAuthClientService.getAccessTokenResponse();
  90         if (accessTokenResponse == null) {
  91             throw new OAuthException("No access token response");
  92         }
  93
  94         return accessTokenResponse;
  95     }
  96
  97     private String getAuthorizationUrl() {
  98         try {
  99             return oAuthClientService.getAuthorizationUrl(BSK_REDIRECT_URI, BSK_SCOPE, null);
 100         } catch (OAuthException e) {
 101             return "";
 102         }
 103     }
 104 }