Service Accounts

/*
 * Copyright 2015 Google Inc
 *
 * 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.
*/

using Google.Apis.Auth.OAuth2;
using Google.Apis.Dfareporting.v4;
using Google.Apis.Dfareporting.v4.Data;
using Google.Apis.Json;
using Google.Apis.Services;
using System;
using System.Collections.Generic;
using System.IO;

namespace DfaReporting.Samples {
  /// <summary>
  /// This example demonstrates how to authenticate and make a basic request using a service
  /// account.
  /// </summary>
  class AuthenticateUsingServiceAccount : SampleBase {
    /// <summary>
    /// The OAuth 2.0 scopes to request.
    /// </summary>
    private static readonly IEnumerable<string> OAuthScopes = new[] {
      DfareportingService.Scope.Dfareporting
    };

    /// <summary>
    /// Returns a description about the code example.
    /// </summary>
    public override string Description {
      get {
        return "This example demonstrates how to authenticate and make a basic request" +
               " using a service account.\n";
      }
    }

    /// <summary>
    /// Main method, to run this code example as a standalone application.
    /// </summary>
    /// <param name="args">The command line arguments.</param>
    public static void Main(string[] args) {
      SampleBase codeExample = new AuthenticateUsingServiceAccount();
      Console.WriteLine(codeExample.Description);
      codeExample.Run(null);
    }

    /// <summary>
    /// Run the code example.
    /// </summary>
    /// <param name="service">Unused</param>
    public override void Run(DfareportingService service) {
      string pathToJsonFile = _T("ENTER_PATH_TO_JSON_FILE_HERE");

      // An optional Google account email to impersonate. Only applicable to service accounts which
      // have enabled domain-wide delegation and wish to make API requests on behalf of an account
      // within their domain. Setting this field will not allow you to impersonate a user from a
      // domain you don't own (e.g., gmail.com).
      string emailToImpersonate = _T("");

      // Build service account credential.
      ServiceAccountCredential credential =
          getServiceAccountCredential(pathToJsonFile, emailToImpersonate);

      // Create a Dfareporting service object.
      //
      // Note: application name should be replaced with a value that identifies your application.
      service = new DfareportingService(
          new BaseClientService.Initializer {
            HttpClientInitializer = credential,
            ApplicationName = "C# service account sample"
          }
      );

      // Retrieve and print all user profiles for the current authorized user.
      UserProfileList profiles = service.UserProfiles.List().Execute();

      foreach (UserProfile profile in profiles.Items) {
        Console.WriteLine("Found user profile with ID {0} and name \"{1}\".",
            profile.ProfileId, profile.UserName);
      }
    }

    private ServiceAccountCredential getServiceAccountCredential(String pathToJsonFile,
        String emailToImpersonate) {
      // Load and deserialize credential parameters from the specified JSON file.
      JsonCredentialParameters parameters;
      using (Stream json = new FileStream(pathToJsonFile, FileMode.Open, FileAccess.Read)) {
        parameters = NewtonsoftJsonSerializer.Instance.Deserialize<JsonCredentialParameters>(json);
      }

      // Create a credential initializer with the correct scopes.
      ServiceAccountCredential.Initializer initializer =
          new ServiceAccountCredential.Initializer(parameters.ClientEmail) {
            Scopes = OAuthScopes
          };

      // Configure impersonation (if applicable).
      if (!String.IsNullOrEmpty(emailToImpersonate)) {
        initializer.User = emailToImpersonate;
      }

      // Create a service account credential object using the deserialized private key.
      ServiceAccountCredential credential =
          new ServiceAccountCredential(initializer.FromPrivateKey(parameters.PrivateKey));

      return credential;
    }
  }
}

// Copyright 2014 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.

package com.google.api.services.samples.dfareporting.auth;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.services.dfareporting.Dfareporting;
import com.google.api.services.dfareporting.DfareportingScopes;
import com.google.api.services.dfareporting.model.UserProfileList;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableSet;
import java.io.FileInputStream;

/**
 * This example demonstrates how to authenticate and make a basic request using a service account.
 */
public class AuthenticateUsingServiceAccount {
  private static final String PATH_TO_JSON_FILE = "ENTER_PATH_TO_JSON_FILE_HERE";

  /**
   * An optional Google account email to impersonate. Only applicable to service accounts which have
   * enabled domain-wide delegation and wish to make API requests on behalf of an account within
   * their domain. Setting this field will not allow you to impersonate a user from a domain you
   * don't own (e.g., gmail.com).
   */
  private static final String EMAIL_TO_IMPERSONATE = "";

  // The OAuth 2.0 scopes to request.
  private static final ImmutableSet<String> OAUTH_SCOPES =
      ImmutableSet.of(DfareportingScopes.DFAREPORTING);

  private static Credential getServiceAccountCredential(
      String pathToJsonFile, String emailToImpersonate) throws Exception {
    // Generate a credential object from the specified JSON file.
    GoogleCredential credential = GoogleCredential.fromStream(new FileInputStream(pathToJsonFile));

    // Update the credential object with appropriate scopes and impersonation info (if applicable).
    if (Strings.isNullOrEmpty(emailToImpersonate)) {
      credential = credential.createScoped(OAUTH_SCOPES);
    } else {
      credential =
          new GoogleCredential.Builder()
              .setTransport(credential.getTransport())
              .setJsonFactory(credential.getJsonFactory())
              .setServiceAccountId(credential.getServiceAccountId())
              .setServiceAccountPrivateKey(credential.getServiceAccountPrivateKey())
              .setServiceAccountScopes(OAUTH_SCOPES)
              // Set the email of the user you are impersonating (this can be yourself).
              .setServiceAccountUser(emailToImpersonate)
              .build();
    }

    return credential;
  }

  public static void runExample(Dfareporting reporting) throws Exception {
    // Retrieve and print all user profiles for the current authorized user.
    UserProfileList profiles = reporting.userProfiles().list().execute();
    for (int i = 0; i < profiles.getItems().size(); i++) {
      System.out.printf("%d) %s%n", i + 1, profiles.getItems().get(i).getUserName());
    }
  }

  public static void main(String[] args) throws Exception {
    // Build service account credential.
    Credential credential = getServiceAccountCredential(PATH_TO_JSON_FILE, EMAIL_TO_IMPERSONATE);

    // Create a Dfareporting client instance.
    //
    // Note: application name below should be replaced with a value that identifies your
    // application. Suggested format is "MyCompany-ProductName/Version.MinorVersion".
    Dfareporting reporting =
        new Dfareporting.Builder(credential.getTransport(), credential.getJsonFactory(), credential)
            .setApplicationName("dfareporting-java-service-acct-sample")
            .build();

    runExample(reporting);
  }
}

<?php
/*
 * Copyright 2017 Google Inc.
 *
 * 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_once dirname(__DIR__) . '/vendor/autoload.php';

/**
 * This example demonstrates how to authenticate and make a basic request using
 * a service account.
 *
 * This example is written to be run as a command line application, not as a
 * webpage. An optional Google account email to impersonate may be specified as
 * follows:
 *
 *     AuthenticateUsingServiceAccount.php /path/to/client_secrets.json <email>
 *
 * This optional flag only applies to service accounts which have domain-wide
 * delegation enabled and wish to make API requests on behalf of an account
 * within that domain. Using this flag will not allow you to impersonate a user
 * from a domain that you don't own (e.g., gmail.com).
 */
class AuthenticateUsingServiceAccount
{
    // The OAuth 2.0 scopes to request.
    private static $OAUTH_SCOPES = [
        Google_Service_Dfareporting::DFAREPORTING
    ];

    public function run($pathToJsonFile, $email = null)
    {
        // Create an authenticated client object.
        $client = $this->createAuthenticatedClient($pathToJsonFile, $email);

        // Create a Dfareporting service object.
        $service = new Google_Service_Dfareporting($client);

        $this->getUserProfiles($service);
    }

    private function createAuthenticatedClient($pathToJsonFile, $email)
    {
        // Create a Google_Client instance.
        //
        // Note: application name should be replaced with a value that identifies
        // your application. Suggested format is "MyCompany-ProductName".
        $client = new Google_Client();
        $client->setApplicationName('PHP service account sample');
        $client->setScopes(self::$OAUTH_SCOPES);

        // Load the service account credentials.
        $client->setAuthConfig($pathToJsonFile);

        // Configure impersonation (if applicable).
        if (!is_null($email)) {
            $client->setSubject($email);
        }

        return $client;
    }

    private function getUserProfiles($service)
    {
        // Retrieve and print all user profiles for the current authorized user.
        $result = $service->userProfiles->listUserProfiles();
        foreach ($result['items'] as $userProfile) {
            printf(
                "User profile \"%s\" (ID: %d) found for account %d.\n",
                $userProfile->getUserName(),
                $userProfile->getProfileId(),
                $userProfile->getAccountId()
            );
        }
    }
}

if ($argc < 2 || $argc >= 4) {
    printf(
        "Usage: %s /path/to/client_secrets.json [email_to_impersonate]\n",
        $argv[0]
    );
} else {
    $sample = new AuthenticateUsingServiceAccount();

    if ($argc == 2) {
        $sample->run($argv[1]);
    } else {
        $sample->run($argv[1], $argv[2]);
    }
}

#!/usr/bin/python
#
# Copyright 2015 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.

"""This example demonstrates how to authenticate using a service account.

An optional Google account email to impersonate may be specified as follows:
    authenticate_using_service_account.py <path_to_json_file> -i <email>

This optional flag only applies to service accounts which have domain-wide
delegation enabled and wish to make API requests on behalf of an account
within that domain. Using this flag will not allow you to impersonate a
user from a domain you don't own (e.g., gmail.com).
"""

import argparse
import sys

from googleapiclient import discovery
import httplib2
from oauth2client import client
from oauth2client import tools
from oauth2client.service_account import ServiceAccountCredentials

# Declare command-line flags.
argparser = argparse.ArgumentParser(add_help=False)
argparser.add_argument(
    'path_to_service_account_json_file',
    help='Path to the service account JSON file to use for authenticating.')
argparser.add_argument(
    '-i',
    '--impersonation_email',
    help='Google account email to impersonate.')

# The OAuth 2.0 scopes to request.
OAUTH_SCOPES = ['https://www.googleapis.com/auth/dfareporting']


def main(argv):
  # Retrieve command line arguments.
  parser = argparse.ArgumentParser(
      description=__doc__,
      formatter_class=argparse.RawDescriptionHelpFormatter,
      parents=[tools.argparser, argparser])
  flags = parser.parse_args(argv[1:])

  # Authenticate using the supplied service account credentials
  http = authenticate_using_service_account(
      flags.path_to_service_account_json_file,
      flags.impersonation_email)

  # Construct a service object via the discovery service.
  service = discovery.build('dfareporting', 'v4', http=http)

  try:
    # Construct the request.
    request = service.userProfiles().list()

    # Execute request and print response.
    response = request.execute()

    for profile in response['items']:
      print('Found user profile with ID %s and user name "%s".' %
            (profile['profileId'], profile['userName']))

  except client.AccessTokenRefreshError:
    print('The credentials have been revoked or expired, please re-run the '
          'application to re-authorize')


def authenticate_using_service_account(path_to_service_account_json_file,
                                       impersonation_email):
  """Authorizes an httplib2.Http instance using service account credentials."""
  # Load the service account credentials from the specified JSON keyfile.
  credentials = ServiceAccountCredentials.from_json_keyfile_name(
      path_to_service_account_json_file,
      scopes=OAUTH_SCOPES)

  # Configure impersonation (if applicable).
  if impersonation_email:
    credentials = credentials.create_delegated(impersonation_email)

  # Use the credentials to authorize an httplib2.Http instance.
  http = credentials.authorize(httplib2.Http())

  return http


if __name__ == '__main__':
  main(sys.argv)

#!/usr/bin/env ruby

#
# Copyright:: Copyright 2016, Google Inc. All Rights Reserved.
#
# License:: 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.
#
# This example demonstrates how to authenticate using a service account.
#
# An optional Google account email to impersonate may be specified as follows:
#    authenticate_using_service_account.rb <path_to_json_file> --i <email>
#
# This optional flag only applies to service accounts which have domain-wide
# delegation enabled and wish to make API requests on behalf of an account
# within that domain. Using this flag will not allow you to impersonate a
# user from a domain you don't own (e.g., gmail.com).

require 'google/apis/dfareporting_v4'
require 'googleauth'
require 'optparse'

API_NAMESPACE = Google::Apis::DfareportingV4

def authenticate_using_service_account(path_to_json_file, impersonation_email)
  # Create a Dfareporting service object.
  #
  # Note: application name should be replaced with a value that identifies
  # your application. Suggested format is "MyCompany-ProductName".
  service = API_NAMESPACE::DfareportingService.new
  service.client_options.application_name = 'Ruby service account sample'
  service.client_options.application_version = '1.0.0'

  # Generate an authorization object from the specified JSON file.
  File.open(path_to_json_file, 'r+') do |json|
    service.authorization =
      Google::Auth::ServiceAccountCredentials.make_creds(
        json_key_io: json,
        scope: [API_NAMESPACE::AUTH_DFAREPORTING]
      )
  end

  # Configure impersonation (if applicable).
  service.authorization.sub = impersonation_email unless
    impersonation_email.nil?

  service
end

def get_userprofiles(service)
  # Get all user profiles.
  result = service.list_user_profiles

  # Display results.
  result.items.each do |profile|
    puts format(
      'User profile with ID %d and name "%s" was found for account %d.',
      profile.profile_id, profile.user_name, profile.account_id
    )
  end
end

if $PROGRAM_NAME == __FILE__
  # Retrieve command line arguments.
  impersonation_email = nil
  optparse = OptionParser.new do |opts|
    opts.banner = format('Usage: %s path_to_json_file [options]', $PROGRAM_NAME)
    opts.on_tail('-i', '--impersonate EMAIL',
      'Google account email to impersonate') do |email|
      impersonation_email = email
    end
  end
  optparse.parse!

  if ARGV.empty?
    puts optparse
    exit(-1)
  end

  # Authenticate and initialize API service using service account.
  service = authenticate_using_service_account(ARGV.shift, impersonation_email)

  get_userprofiles(service)
end