public async Task CreateAsync(AuthenticationTokenCreateContext context) {
var clientid = context.Ticket.Properties.Dictionary["as:client_id"];
if (string.IsNullOrEmpty(clientid)) {
return;
}
var refreshTokenId = Guid.NewGuid().ToString("n");
using (AuthRepository repo = new AuthRepository()) {
var refreshTokenLifeTime = context.OwinContext.Get<string>("as:clientRefreshTokenLifeTime");
var token = new RefreshToken() {
Id = Helper.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();
var result = await repo.AddRefreshToken(token);
if (result) {
context.SetToken(refreshTokenId);
}
}
}
public async Task<bool> AddRefreshToken(RefreshToken token) {
var existingToken = _ctx.RefreshTokens.SingleOrDefault(r => r.Subject == token.Subject && r.ClientId == token.ClientId);
if (existingToken != null) {
var result = await RemoveRefreshToken(existingToken);
}
_ctx.RefreshTokens.Add(token);
return await _ctx.SaveChangesAsync() > 0;
}
public async Task<bool> RemoveRefreshToken(RefreshToken refreshToken) {
_ctx.RefreshTokens.Remove(refreshToken);
return await _ctx.SaveChangesAsync() > 0;
}