public async Task ReceiveAsync(AuthenticationTokenReceiveContext context)
{
string allowedOrigin = context.OwinContext.Get <string>("as:clientAllowedOrigin");
string hashedTokenId;
context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { allowedOrigin });
hashedTokenId = Utils.GetHash(context.Token);
using (AuthenticationRepository _repo = new AuthenticationRepository())
{
RefreshToken refreshToken = await _repo.FindRefreshToken(hashedTokenId);
if (refreshToken != null)
{
//Get protectedTicket from refreshToken class
context.DeserializeTicket(refreshToken.ProtectedTicket);
bool result = await _repo.RemoveRefreshToken(hashedTokenId);
}
}
}
public async Task CreateAsync(AuthenticationTokenCreateContext context)
{
string clientid = context.Ticket.Properties.Dictionary["as:client_id"];
if (string.IsNullOrEmpty(clientid))
{
return;
}
string refreshTokenId = Guid.NewGuid().ToString("n");
using (AuthenticationRepository _repo = new AuthenticationRepository())
{
string refreshTokenLifeTime = context.OwinContext.Get <string>("as:clientRefreshTokenLifeTime");
RefreshToken token = new RefreshToken()
{
Id = Utils.GetHash(refreshTokenId),
ClientId = clientid,
Subject = context.Ticket.Identity.Name,
IssuedUtc = DateTime.UtcNow,
ExpiresUtc = DateTime.UtcNow.AddMinutes(Convert.ToDouble(refreshTokenLifeTime))
};
context.Ticket.Properties.IssuedUtc = token.IssuedUtc;
context.Ticket.Properties.ExpiresUtc = token.ExpiresUtc;
token.ProtectedTicket = context.SerializeTicket();
bool result = await _repo.AddRefreshToken(token);
if (result == true)
{
context.SetToken(refreshTokenId);
}
}
}
public override Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
{
string clientId = string.Empty;
string clientSecret = string.Empty;
Client client = null;
if (context.TryGetBasicCredentials(out clientId, out clientSecret) == false)
{
context.TryGetFormCredentials(out clientId, out clientSecret);
}
if (context.ClientId == null)
{
//Remove the comments from the below line context.SetError, and invalidate context
//if you want to force sending clientId/secrects once obtain access tokens.
context.Validated();
//context.SetError("invalid_clientId", "ClientId should be sent.");
return(Task.FromResult <object>(null));
}
using (AuthenticationRepository _repo = new AuthenticationRepository())
{
client = _repo.FindClient(context.ClientId);
}
if (client == null)
{
context.SetError("invalid_clientId", string.Format("Client '{0}' is not registered in the system.", context.ClientId));
return(Task.FromResult <object>(null));
}
if (client.ApplicationType == ApplicationTypes.NativeConfidential)
{
if (string.IsNullOrWhiteSpace(clientSecret))
{
context.SetError("invalid_clientId", "Client secret should be sent.");
return(Task.FromResult <object>(null));
}
else
{
if (client.Secret != Utils.GetHash(clientSecret))
{
context.SetError("invalid_clientId", "Client secret is invalid.");
return(Task.FromResult <object>(null));
}
}
}
if (client.Active == false)
{
context.SetError("invalid_clientId", "Client is inactive.");
return(Task.FromResult <object>(null));
}
context.OwinContext.Set <string>("as:clientAllowedOrigin", client.AllowedOrigin);
context.OwinContext.Set <string>("as:clientRefreshTokenLifeTime", client.RefreshTokenLifeTime.ToString());
context.Validated();
return(Task.FromResult <object>(null));
}
