/// <summary>
/// Save a refresh token
/// Returns the refresh token id
/// </summary>
/// <param name="refreshToken"></param>
/// <returns>Refresh token id</returns>
public async Task <String> SaveRefreshTokenAsync(RefreshTokenModel refreshToken)
{
var refreshTokenId = Guid.NewGuid().ToString("n");
_context.RefreshTokens.Add(new RefreshTokens
{
ClientId = "notneeded",
ExpiresUtc = refreshToken.ExpiresUtc,
IssuedUtc = refreshToken.IssuedUtc,
ProtectedTicket = refreshToken.AccessToken,
Subject = refreshToken.Subject,
TokenIdHash = CryptoMethods.GetSHA512Hash(refreshTokenId)
});
await _context.SaveChangesAsync();
return(refreshTokenId);
}
/// <summary>
/// Remove a token
/// </summary>
/// <param name="refreshTokenId"></param>
/// <returns></returns>
public async Task RemoveTokenAsync(String refreshTokenId)
{
using (var transaction = await _context.Database.BeginTransactionAsync())
{
var token = await _context.RefreshTokens.SingleOrDefaultAsync(o => o.TokenIdHash == CryptoMethods.GetSHA512Hash(refreshTokenId));
if (token != null)
{
_context.RefreshTokens.Remove(token);
await _context.SaveChangesAsync();
transaction.Commit();
}
}
}
/// <summary>
/// Get a
/// </summary>
/// <param name="refreshTokenId"></param>
/// <returns></returns>
public async Task <RefreshTokenModel> GetRefreshTokenAsync(String refreshTokenId)
{
var token = await _context.RefreshTokens.SingleOrDefaultAsync(o => o.TokenIdHash == CryptoMethods.GetSHA512Hash(refreshTokenId) && o.ExpiresUtc >= DateTime.UtcNow);
return(token != null ? new RefreshTokenModel
{
ExpiresUtc = token.ExpiresUtc,
IssuedUtc = token.IssuedUtc,
AccessToken = token.ProtectedTicket,
Subject = token.Subject
} : null);
}
