/// <summary>
/// Checks if the request carries a valid long-term cookie, and replaces it with a new valid cookie.
/// If a hijack is performed, the response headers will be flushed.
/// Callers should check the flush status after calling this method.
/// </summary>
/// <returns><c>True</c> if the long-term cookie is valid, <c>false</c> otherwise.</returns>
/// <param name="context">The http context.</param>
protected virtual async Task <bool> PerformLongTermLogin(IHttpContext context)
{
if (!UseLongTermCookieStorage || LongTermStorage == null)
{
return(false);
}
var longterm = context.Request.Cookies[AuthCookieName];
if (string.IsNullOrWhiteSpace(longterm))
{
return(false);
}
var ltc = new LongTermCookie(longterm);
if (!ltc.IsValid)
{
return(false);
}
var lts = await LongTermStorage.GetLongTermLoginAsync(ltc.Series);
if (Utility.IsNullOrExpired(lts))
{
return(false);
}
if (!PBKDF2.ComparePassword(ltc.Token, lts.Token))
{
await LongTermStorage.DropAllLongTermLoginsAsync(lts.UserID, lts.Series);
SetHijackError(context);
await context.Response.FlushHeadersAsync();
return(false);
}
await PerformLoginAsync(context, lts.UserID, lts.Series, true);
return(true);
}
/// <summary>
/// Handles the request
/// </summary>
/// <returns>The awaitable task.</returns>
/// <param name="context">The requests context.</param>
public async Task <bool> HandleAsync(IHttpContext context)
{
var xsrf = context.Request.Headers[XSRFHeaderName] ?? context.Request.Cookies[XSRFCookieName];
var cookie = context.Request.Cookies[AuthSessionCookieName];
var longterm = context.Request.Cookies[AuthCookieName];
var droppedxsrf = false;
if (!string.IsNullOrWhiteSpace(xsrf))
{
var session = await ShortTermStorage.GetSessionFromXSRFAsync(xsrf);
if (session != null)
{
await ShortTermStorage.DropSessionAsync(session);
droppedxsrf = true;
}
context.Response.AddCookie(XSRFCookieName, "", path: CookiePath, expires: new DateTime(1970, 1, 1), maxage: 0);
}
if (!string.IsNullOrWhiteSpace(cookie))
{
var session = await ShortTermStorage.GetSessionFromCookieAsync(cookie);
if (session != null)
{
await ShortTermStorage.DropSessionAsync(session);
}
if (session != null || droppedxsrf)
{
context.Response.AddCookie(AuthSessionCookieName, "", path: CookiePath, expires: new DateTime(1970, 1, 1), maxage: 0);
}
}
if (!string.IsNullOrWhiteSpace(longterm))
{
if (LongTermStorage != null)
{
var pbkdf2 = new LongTermCookie(longterm);
if (pbkdf2.IsValid)
{
var lts = await LongTermStorage.GetLongTermLoginAsync(pbkdf2.Series);
if (lts != null)
{
await LongTermStorage.DropLongTermLoginAsync(lts);
}
}
}
context.Response.AddCookie(AuthCookieName, "", path: CookiePath, expires: new DateTime(1970, 1, 1), maxage: 0);
}
context.Response.StatusCode = (HttpStatusCode)ResultStatusCode;
context.Response.StatusMessage = ResultStatusMessage;
if (!string.IsNullOrWhiteSpace(RedirectUrl))
{
context.Response.Headers["Location"] = RedirectUrl;
}
return(true);
}
/// <summary>
/// Handles the request
/// </summary>
/// <returns>The awaitable task.</returns>
/// <param name="context">The requests context.</param>
public async Task <bool> HandleAsync(IHttpContext context)
{
var xsrf = context.Request.Headers[XSRFHeaderName] ?? context.Request.Cookies[XSRFCookieName];
var cookie = context.Request.Cookies[AuthSessionCookieName];
var longterm = context.Request.Cookies[AuthCookieName];
var droppedxsrf = false;
if (!string.IsNullOrWhiteSpace(xsrf))
{
var session = await ShortTermStorage.GetSessionFromXSRFAsync(xsrf);
if (session != null)
{
// Kill the existing record
await ShortTermStorage.DropSessionAsync(session);
droppedxsrf = true;
// Register a new one on the same XSRF token,
// but without any user attached
await ShortTermStorage.AddSessionAsync(new SessionRecord()
{
UserID = null,
Cookie = null,
XSRFToken = session.XSRFToken,
Expires = DateTime.Now.AddSeconds(ShortTermExpirationSeconds)
});
}
//context.Response.AddCookie(XSRFCookieName, "", path: CookiePath, expires: new DateTime(1970, 1, 1), maxage: 0);
}
if (!string.IsNullOrWhiteSpace(cookie))
{
var session = await ShortTermStorage.GetSessionFromCookieAsync(cookie);
if (session != null)
{
await ShortTermStorage.DropSessionAsync(session);
}
if (session != null || droppedxsrf)
{
context.Response.AddCookie(AuthSessionCookieName, "", path: CookiePath, expires: new DateTime(1970, 1, 1), maxage: 0);
}
}
if (!string.IsNullOrWhiteSpace(longterm))
{
if (LongTermStorage != null)
{
var pbkdf2 = new LongTermCookie(longterm);
if (pbkdf2.IsValid)
{
var lts = await LongTermStorage.GetLongTermLoginAsync(pbkdf2.Series);
if (lts != null)
{
await LongTermStorage.DropLongTermLoginAsync(lts);
}
}
}
context.Response.AddCookie(AuthCookieName, "", path: CookiePath, expires: new DateTime(1970, 1, 1), maxage: 0);
}
context.Response.StatusCode = (HttpStatusCode)ResultStatusCode;
context.Response.StatusMessage = ResultStatusMessage;
if (!string.IsNullOrWhiteSpace(RedirectUrl))
{
context.Response.Headers["Location"] = RedirectUrl;
}
return(true);
}
