Ejemplo de código de autenticación de credenciales de cuenta de Microsoft
Importante
A partir del 1 de junio de 2022, requeriremos la autenticación multifactor para todos los usuarios que inicien sesión a través de una aplicación de terceros que use la API de Bing Ads, content API y las API de Hotel.
Debe actualizar la aplicación para obtener el consentimiento del usuario mediante el nuevo msads.manage ámbito. Todos los desarrolladores de aplicaciones deben realizar acciones para usar el nuevo ámbito.
Para obtener más información, consulte la guía de requisitos de autenticación multifactor .
Para obtener información sobre cómo usar OAuth para autenticar a los usuarios de Microsoft Advertising, consulte Autenticación con OAuth. Si actualmente usa el SDK de Bing Ads para .NET para autenticar las credenciales de la cuenta microsoft del usuario, puede seguir haciéndolo.
En este ejemplo se muestra cómo obtener un token de acceso de OAuth que se usa para establecer el encabezado AuthenticationToken. El ejemplo se divide en dos partes. La primera parte muestra un cliente simple que llama a la segunda parte que implementa el proceso de flujo de concesión de código.
Parte uno: el cliente
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using Content.OAuth; // Reference to CodeGrantFlow DLL
using Newtonsoft.Json; // NuGet Json.NET
namespace Content
{
class Program
{
// The application ID that you were given when you
// registered your application. This is for a
// desktop app so there's not client secret.
private static string _clientId = "<clientidgoeshere>";
// If _storedRefreshToken is null, CodeGrantFlow goes
// through the entire process of getting the user credentials
// and permissions. If _storedRefreshToken contains the refresh
// token, CodeGrantFlow returns the new access and refresh tokens.
private static string _storedRefreshToken = null;
private static CodeGrantOauth _tokens = null;
private static DateTime _tokenExpiration;
static void Main(string[] args)
{
try
{
// TODO: Add logic to get the logged on user's refresh token
// from secured storage.
_tokens = GetOauthTokens(_storedRefreshToken, _clientId);
Console.WriteLine("access token:" + _tokens.AccessToken.Substring(0, 15) + "...");
Console.WriteLine("refresh token: " + _tokens.RefreshToken.Substring(0, 15) + "...");
Console.WriteLine("token expires: " + _tokens.Expiration);
}
catch (Exception e)
{
Console.WriteLine("\n" + e.Message);
}
}
// Gets the OAuth tokens. If the refresh token doesn't exist, get
// the user's consent and a new access and refresh token.
private static CodeGrantOauth GetOauthTokens(string refreshToken, string clientId)
{
CodeGrantOauth auth = new CodeGrantOauth(clientId);
if (string.IsNullOrEmpty(refreshToken))
{
auth.GetAccessToken();
}
else
{
auth.RefreshAccessToken(refreshToken);
// Refresh tokens can become invalid for several reasons
// such as the user's password changed.
if (!string.IsNullOrEmpty(auth.Error))
{
auth = GetOauthTokens(null, clientId);
}
}
// TODO: Store the new refresh token in secured storage
// for the logged on user.
if (!string.IsNullOrEmpty(auth.Error))
{
throw new Exception(auth.Error);
}
else
{
_storedRefreshToken = auth.RefreshToken;
_tokenExpiration = DateTime.Now.AddSeconds(auth.Expiration);
}
return auth;
}
}
}
Parte dos: Implementación del flujo de concesión de código
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Windows.Forms; // Add reference
using System.Net; // .Net 4.5 required for WebUtility.UrlEncode
using System.Drawing; // Add reference
using Newtonsoft.Json; // NuGet Json.NET
namespace Content.OAuth
{
// This class supports the OAuth 2.0 Authorization Code Grant flow
// for a desktop app.
public class CodeGrantOauth : Form
{
private WebBrowser _browser = null; // Used to get user consent
private string _accessToken = null;
private string _refreshToken = null;
private string _authorizationCode = null;
private int _expiration;
private string _error = null;
// Production OAuth server endpoints.
private string AuthorizationUri = "https://login.live.com/oauth20_authorize.srf"; // Authorization code endpoint
private string RedirectUri = "https://login.live.com/oauth20_desktop.srf"; // Callback endpoint
private string RefreshUri = "https://login.live.com/oauth20_token.srf"; // Get tokens endpoint
private string RedirectPath = "/oauth20_desktop.srf";
private string ErrorPath = "/err.srf";
// Parameters to pass to requests.
// codeQueryString is the query string for the authorizationUri. To force user log in, include the &prompt=login parameter.
// accessBody is the request body used with the refreshUri to get the access token using the authorization code.
// refreshBody is the request body used with the refreshUri to get the access token using a refresh token.
private string CodeQueryString = "?client_id={0}&scope=bingads.manage&response_type=code&redirect_uri={1}";
private string AccessBody = "client_id={0}&code={1}&grant_type=authorization_code&redirect_uri={2}";
private string RefreshBody = "client_id={0}&grant_type=refresh_token&redirect_uri={1}&refresh_token={2}";
private string _clientId = null;
private string _uri = null;
public string AccessToken { get { return this._accessToken; } }
public string RefreshToken { get { return this._refreshToken; } }
public int Expiration { get { return this._expiration; } }
public string Error { get { return this._error; } }
// Must instantiate the class by passing the apps client ID.
public CodeGrantOauth(string clientId)
{
if (string.IsNullOrEmpty(clientId))
{
throw new ArgumentException("The client ID is missing.");
}
this._clientId = clientId;
this._uri = string.Format(this.AuthorizationUri + this.CodeQueryString, this._clientId, RedirectUri);
}
// Add the browser to the form.
private void InitializeForm()
{
this.FormClosing += new FormClosingEventHandler(form_FormClosing);
this.Size = new Size(420, 580);
this._browser = new WebBrowser();
this._browser.Dock = DockStyle.Fill;
this._browser.Navigated += new WebBrowserNavigatedEventHandler(browser_Navigated);
this.Controls.AddRange(new Control[] { this._browser });
}
// Get the access token by using the authorization code.
public string GetAccessToken()
{
Thread oauthThread = new Thread(new ThreadStart(GetToken));
oauthThread.SetApartmentState(ApartmentState.STA);
oauthThread.Start();
oauthThread.Join();
try
{
if (!string.IsNullOrEmpty(this._authorizationCode))
{
var accessTokenRequestBody = string.Format(this.AccessBody, this._clientId, this._authorizationCode, WebUtility.UrlEncode(RedirectUri));
AccessTokens tokens = GetTokens(this.RefreshUri, accessTokenRequestBody);
this._accessToken = tokens.AccessToken;
this._refreshToken = tokens.RefreshToken;
this._expiration = tokens.Expiration;
}
}
catch (WebException)
{
this._error = "GetAccessToken failed likely due to an invalid client ID, client secret, or authorization code";
}
return this._accessToken;
}
// Starts the browser used to get consent and blocks until
// the user gives consent or cancels the request.
private void GetToken()
{
InitializeForm();
this._browser.Navigate(this._uri);
Application.EnableVisualStyles();
Application.Run(this);
}
// Get the access token by using the refresh token.
public string RefreshAccessToken(string refreshToken)
{
if (string.IsNullOrEmpty(refreshToken))
{
throw new ArgumentException("The refresh token is missing.");
}
try
{
var refreshTokenRequestBody = string.Format(this.RefreshBody, this._clientId, WebUtility.UrlEncode(RedirectUri), refreshToken);
AccessTokens tokens = GetTokens(this.RefreshUri, refreshTokenRequestBody);
this._accessToken = tokens.AccessToken;
this._refreshToken = tokens.RefreshToken;
this._expiration = tokens.Expiration;
}
catch (WebException)
{
this._error = "RefreshAccessToken failed likely due to an invalid client ID or refresh token";
}
return this._accessToken;
}
// The user either provided consent or canceled the request.
private void form_FormClosing(object sender, EventArgs e)
{
Application.Exit();
}
// Captures all consent traffic. Filter the traffic for the redirect
// URI. The URIs query string contains either the authorization code
// or an error.
private void browser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
Dictionary<string, string> parameters = null;
if (!string.IsNullOrEmpty(e.Url.Query))
{
parameters = ParseFragment(e.Url.Query, new char[] { '&', '?' });
}
if (e.Url.AbsolutePath.Equals(RedirectPath))
{
if (parameters.ContainsKey("code"))
{
this._authorizationCode = parameters["code"];
}
else if (parameters.ContainsKey("error_description"))
{
this._error = WebUtility.UrlDecode(parameters["error_description"]);
}
this.Close();
}
else if (e.Url.AbsolutePath.Equals(ErrorPath))
{
if (parameters.ContainsKey("error_description"))
{
this._error = WebUtility.UrlDecode(parameters["error_description"]);
this.Close(); ;
}
}
}
// Parses the query string.
private Dictionary<string, string> ParseFragment(string queryString, char[] delimeters)
{
var parameters = new Dictionary<string, string>();
string[] pairs = queryString.Split(delimeters, StringSplitOptions.RemoveEmptyEntries);
foreach (string pair in pairs)
{
string[] nameValaue = pair.Split(new char[] { '=' });
parameters.Add(nameValaue[0], nameValaue[1]);
}
return parameters;
}
// Called by GetAccessToken and RefreshAccessToken to get an access token.
private static AccessTokens GetTokens(string uri, string body)
{
AccessTokens tokens = null;
var request = (HttpWebRequest)WebRequest.Create(uri);
request.Method = "POST";
request.Accept = "application/json";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = body.Length;
using (Stream requestStream = request.GetRequestStream())
{
StreamWriter writer = new StreamWriter(requestStream);
writer.Write(body);
writer.Close();
}
var response = (HttpWebResponse)request.GetResponse();
using (Stream responseStream = response.GetResponseStream())
{
var reader = new StreamReader(responseStream);
string json = reader.ReadToEnd();
reader.Close();
tokens = JsonConvert.DeserializeObject(json, typeof(AccessTokens)) as AccessTokens;
}
return tokens;
}
}
// The body of the response from GetTokens is a JSON object that
// contains the following properties (and a couple of others
// that we're not capturing).
[JsonObject(MemberSerialization.OptIn)]
class AccessTokens
{
[JsonProperty("expires_in")]
public int Expiration { get; set; }
[JsonProperty("access_token")]
public string AccessToken { get; set; }
[JsonProperty("refresh_token")]
public string RefreshToken { get; set; }
}
}