GetRefreshToken.php

<?php
/**
 * Copyright 2016 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


require 'vendor/autoload.php';

use Google\Auth\CredentialsLoader;
use Google\Auth\OAuth2;

/**
 * Command line example that prompts you for the required OAuth2 credentials
 * to generate an offline refresh token for installed application flows.
 *
 * <p>You can then use this refresh token to generate access tokens to
 * authenticate against the ads API(s) you're using.
 */
class GetRefreshToken {

  /**
   * @var string the OAuth2 scope for the AdWords API
   * @see https://developers.google.com/adwords/api/docs/guides/authentication#scope
   */
  const ADWORDS_API_SCOPE = 'https://www.googleapis.com/auth/adwords';

  /**
   * @var string the OAuth2 scope for the DFP API
   * @see https://developers.google.com/doubleclick-publishers/docs/authentication#scope
   */
  const DFP_API_SCOPE = 'https://www.googleapis.com/auth/dfp';

  /**
   * @var string the Google OAuth2 authorization URI for OAuth2 requests
   * @see https://developers.google.com/identity/protocols/OAuth2InstalledApp#formingtheurl
   */
  const AUTHORIZATION_URI = 'https://accounts.google.com/o/oauth2/v2/auth';

  /**
   * @var string the redirect URI for OAuth2 installed application flows
   * @see https://developers.google.com/identity/protocols/OAuth2InstalledApp#formingtheurl
   */
  const REDIRECT_URI = 'urn:ietf:wg:oauth:2.0:oob';

  public static function main() {
    $PRODUCTS = [
        ['AdWords', self::ADWORDS_API_SCOPE],
        ['DFP', self::DFP_API_SCOPE],
        ['AdWords and DFP', self::ADWORDS_API_SCOPE . ' ' . self::DFP_API_SCOPE]
    ];

    $stdin = fopen('php://stdin', 'r');

    print 'Enter your OAuth2 client ID here: ';
    $clientId = trim(fgets($stdin));

    print 'Enter your OAuth2 client secret here: ';
    $clientSecret = trim(fgets($stdin));

    print "Select the ads API you're using: [0] AdWords [1] DFP [2] Both\n";
    $api = trim(fgets($stdin));

    while (!is_numeric($api)
        || !(strval(intval($api)) === $api)
        || !(intval($api) >= 0 && intval($api) <= 2)) {
      print "Please enter a valid number for the ads API you're using: [0] "
          . "AdWords [1] DFP [2] Both\n";
      $api = trim(fgets($stdin));
    }
    $api = intval($api);

    if ($api === 2) {
      print '[OPTIONAL] enter any additional OAuth2 scopes as a space '
          . 'delimited string here (the AdWords and DFP scopes are already '
          . 'included): ';
    } else {
      printf(
          '[OPTIONAL] enter any additional OAuth2 scopes as a space '
              . 'delimited string here (the %s scope is already included): ',
          $PRODUCTS[$api][0]
      );
    }
    $scopes = $PRODUCTS[$api][1] . ' ' . trim(fgets($stdin));

    $oauth2 = new OAuth2([
        'authorizationUri' => self::AUTHORIZATION_URI,
        'redirectUri' => self::REDIRECT_URI,
        'tokenCredentialUri' => CredentialsLoader::TOKEN_CREDENTIAL_URI,
        'clientId' => $clientId,
        'clientSecret' => $clientSecret,
        'scope' => $scopes
    ]);

    printf(
        "Log into the Google account you use for %s and visit the following "
            . "URL:\n%s\n\n",
        $PRODUCTS[$api][0],
        $oauth2->buildFullAuthorizationUri()
    );
    print
        'After approving the application, enter the authorization code here: ';
    $code = trim(fgets($stdin));
    fclose($stdin);
    print "\n";

    $oauth2->setCode($code);
    $authToken = $oauth2->fetchAuthToken();

    printf("Your refresh token is: %s\n\n", $authToken['refresh_token']);
    printf(
        "Copy the following lines to your 'adsapi_php.ini' file:\n"
            . "clientId = \"%s\"\n"
            . "clientSecret = \"%s\"\n"
            . "refreshToken = \"%s\"\n",
        $clientId,
        $clientSecret,
        $authToken['refresh_token']
    );
  }
}

GetRefreshToken::main();