Dont forget to remove old dll and make sure your developer facebook have the Login redirect url to your project url (Domain)
step 1: Update this on web.webconfig
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.1.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.1.0.0" />
</dependentAssembly>
step 2: Add this new class
public class FacebookOAuth2Client : OAuth2Client
{
#region Constants and Fields
/// <summary>
/// The authorization endpoint.
/// </summary>
private const string AuthorizationEndpoint = "https://www.facebook.com/dialog/oauth";
/// <summary>
/// The token endpoint.
/// </summary>
private const string TokenEndpoint = "https://graph.facebook.com/oauth/access_token";
/// <summary>
/// The user info endpoint.
/// </summary>
private const string UserInfoEndpoint = "https://graph.facebook.com/me";
/// <summary>
/// The app id.
/// </summary>
private readonly string _appId;
/// <summary>
/// The app secret.
/// </summary>
private readonly string _appSecret;
/// <summary>
/// The requested scopes.
/// </summary>
private readonly string[] _requestedScopes;
#endregion
/// <summary>
/// Creates a new Facebook OAuth2 client, requesting the default "email" scope.
/// </summary>
/// <param name="appId">The Facebook App Id</param>
/// <param name="appSecret">The Facebook App Secret</param>
public FacebookOAuth2Client(string appId, string appSecret)
: this(appId, appSecret, new[] { "email" }) { }
/// <summary>
/// Creates a new Facebook OAuth2 client.
/// </summary>
/// <param name="appId">The Facebook App Id</param>
/// <param name="appSecret">The Facebook App Secret</param>
/// <param name="requestedScopes">One or more requested scopes, passed without the base URI.</param>
public FacebookOAuth2Client(string appId, string appSecret, params string[] requestedScopes)
: base("facebook")
{
if (string.IsNullOrWhiteSpace(appId))
throw new ArgumentNullException("appId");
if (string.IsNullOrWhiteSpace(appSecret))
throw new ArgumentNullException("appSecret");
if (requestedScopes == null)
throw new ArgumentNullException("requestedScopes");
if (requestedScopes.Length == 0)
throw new ArgumentException("One or more scopes must be requested.", "requestedScopes");
_appId = appId;
_appSecret = appSecret;
_requestedScopes = requestedScopes;
}
protected override Uri GetServiceLoginUrl(Uri returnUrl)
{
var state = string.IsNullOrEmpty(returnUrl.Query) ? string.Empty : returnUrl.Query.Substring(1);
return BuildUri(AuthorizationEndpoint, new NameValueCollection
{
{ "client_id", _appId },
{ "scope", string.Join(" ", _requestedScopes) },
{ "redirect_uri", returnUrl.GetLeftPart(UriPartial.Path) },
{ "state", state },
});
}
protected override IDictionary<string, string> GetUserData(string accessToken)
{
var uri = BuildUri(UserInfoEndpoint, new NameValueCollection { { "access_token", accessToken } });
var webRequest = (HttpWebRequest)WebRequest.Create(uri);
using (var webResponse = webRequest.GetResponse())
using (var stream = webResponse.GetResponseStream())
{
if (stream == null)
return null;
using (var textReader = new StreamReader(stream))
{
var json = textReader.ReadToEnd();
var extraData = JsonConvert.DeserializeObject<Dictionary<string, object>>(json);
var data = extraData.ToDictionary(x => x.Key, x => x.Value.ToString());
data.Add("picture", string.Format("https://graph.facebook.com/{0}/picture", data["id"]));
return data;
}
}
}
protected override string QueryAccessToken(Uri returnUrl, string authorizationCode)
{
var uri = BuildUri(TokenEndpoint, new NameValueCollection
{
{ "code", authorizationCode },
{ "client_id", _appId },
{ "client_secret", _appSecret },
{ "redirect_uri", returnUrl.GetLeftPart(UriPartial.Path) },
});
var webRequest = (HttpWebRequest)WebRequest.Create(uri);
string accessToken = null;
HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
// handle response from FB
// this will not be a url with params like the first request to get the 'code'
Encoding rEncoding = Encoding.GetEncoding(response.CharacterSet);
using (StreamReader sr = new StreamReader(response.GetResponseStream(), rEncoding))
{
var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
var jsonObject = serializer.DeserializeObject(sr.ReadToEnd());
var jConvert = JsonConvert.DeserializeObject(JsonConvert.SerializeObject(jsonObject));
Dictionary<string, object> desirializedJsonObject = JsonConvert.DeserializeObject<Dictionary<string, object>>(jConvert.ToString());
accessToken = desirializedJsonObject["access_token"].ToString();
}
return accessToken;
}
private static Uri BuildUri(string baseUri, NameValueCollection queryParameters)
{
var keyValuePairs = queryParameters.AllKeys.Select(k => HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(queryParameters[k]));
var qs = String.Join("&", keyValuePairs);
var builder = new UriBuilder(baseUri) { Query = qs };
return builder.Uri;
}
/// <summary>
/// Facebook works best when return data be packed into a "state" parameter.
/// This should be called before verifying the request, so that the url is rewritten to support this.
/// </summary>
public static void RewriteRequest()
{
var ctx = HttpContext.Current;
var stateString = HttpUtility.UrlDecode(ctx.Request.QueryString["state"]);
if (stateString == null || !stateString.Contains("__provider__=facebook"))
return;
var q = HttpUtility.ParseQueryString(stateString);
q.Add(ctx.Request.QueryString);
q.Remove("state");
ctx.RewritePath(ctx.Request.Path + "?" + q);
}
}
Step: 3 Update File in FacebookProviderAuthorizer.cs
replace FacebookClient with your class FacebookOAuth2Client
