public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context_)
{
context_.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { "*" });
var user = await _repository.FindUser(context_.UserName, context_.Password);
if (user == null)
{
context_.SetError("invalid_grant", "O usuario ou senha estao incorretos");
return;
}
var identity = await _repository.CreateIdentityAsync(user, context_.Options.AuthenticationType);
identity.AddClaims(ExtendedClaimsProvider.GetClaims(user));
var ticket = new AuthenticationTicket(identity, AuthUtil.GetProperties(user, identity.Claims));
context_.Validated(ticket);
}