/// <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);
}
/// <summary>
/// Performs all steps required to do a login
/// </summary>
/// <returns>An awaitable task.</returns>
/// <param name="context">The http context.</param>
/// <param name="userid">The user ID.</param>
/// <param name="series">The long-term series</param>
/// <param name="withlongterm">A value indicating if a long-term session should be created</param>
protected virtual async Task PerformLoginAsync(IHttpContext context, string userid, string series, bool withlongterm)
{
var session = new SessionRecord();
// Re-use the XSRF if possible
if (UseXSRFTokens)
{
var xsrf = context.Request.Headers[XSRFHeaderName];
if (!string.IsNullOrWhiteSpace(xsrf))
{
var prev = await ShortTermStorage.GetSessionFromXSRFAsync(xsrf);
if (!Utility.IsNullOrExpired(prev) && prev.UserID == userid && !string.IsNullOrWhiteSpace(userid))
{
session = prev;
}
}
}
session.UserID = userid;
session.Expires = DateTime.Now.AddSeconds(ShortTermExpirationSeconds);
// If the connection is using SSL, require SSL for the cookie
var usingssl = context.Request.SslProtocol != System.Security.Authentication.SslProtocols.None;
if (UseXSRFTokens)
{
session.XSRFToken = session.XSRFToken ?? PRNG.GetRandomString(32);
context.Response.AddCookie(XSRFCookieName, session.XSRFToken, expires: session.Expires, httponly: false, path: CookiePath, secure: usingssl);
}
if (UseLongTermCookieStorage && LongTermStorage != null && (!string.IsNullOrWhiteSpace(series) || withlongterm))
{
var cookie = new LongTermCookie();
if (!string.IsNullOrWhiteSpace(series))
{
cookie.Series = series;
}
var st = new LongTermToken()
{
UserID = userid,
Expires = DateTime.Now.AddSeconds(LongTermDurationSeconds),
Series = cookie.Series,
Token = PBKDF2.CreatePBKDF2(cookie.Token)
};
await LongTermStorage.AddOrUpdateLongTermLoginAsync(st);
context.Response.AddCookie(AuthCookieName, cookie.ToString(), expires: st.Expires, httponly: true, path: CookiePath, secure: usingssl);
}
session.Cookie = PRNG.GetRandomString(32);
context.Response.AddCookie(AuthSessionCookieName, session.Cookie, expires: session.Expires, httponly: true, path: CookiePath, secure: usingssl);
await ShortTermStorage.AddSessionAsync(session);
SetLoginSuccess(context);
context.Request.UserID = userid;
}
/// <summary>
/// Performs all steps required to do a login
/// </summary>
/// <returns>An awaitable task.</returns>
/// <param name="context">The http context.</param>
/// <param name="userid">The user ID.</param>
/// <param name="series">The long-term series</param>
/// <param name="withlongterm">A value indicating if a long-term session should be created</param>
protected virtual async Task PerformLoginAsync(IHttpContext context, string userid, string series, bool withlongterm)
{
var session = new SessionRecord();
// Re-use the XSRF if possible
if (UseXSRFTokens)
{
var xsrf = context.Request.Headers[XSRFHeaderName];
if (!string.IsNullOrWhiteSpace(xsrf))
{
var prev = await ShortTermStorage.GetSessionFromXSRFAsync(xsrf);
if (prev != null)
{
// Remove the previous entry to avoid conflicts
await ShortTermStorage.DropSessionAsync(prev);
// Re-use the XSRF token
session.XSRFToken = prev.XSRFToken;
}
}
}
session.UserID = userid;
session.Expires = DateTime.Now.AddSeconds(ShortTermExpirationSeconds);
// If the connection is using SSL, require SSL for the cookie
var usingssl = context.Request.SslProtocol != System.Security.Authentication.SslProtocols.None;
if (UseXSRFTokens)
{
session.XSRFToken = session.XSRFToken ?? PRNG.GetRandomString(32);
context.Response.AddCookie(XSRFCookieName, session.XSRFToken, expires: session.Expires, httponly: false, path: CookiePath, secure: usingssl);
}
if (UseLongTermCookieStorage && LongTermStorage != null && (!string.IsNullOrWhiteSpace(series) || withlongterm))
{
var cookie = new LongTermCookie();
if (!string.IsNullOrWhiteSpace(series))
{
cookie.Series = series;
}
var st = new LongTermToken()
{
UserID = userid,
Expires = DateTime.Now.AddSeconds(LongTermDurationSeconds),
Series = cookie.Series,
Token = PBKDF2.CreatePBKDF2(cookie.Token)
};
await LongTermStorage.AddOrUpdateLongTermLoginAsync(st);
context.Response.AddCookie(AuthCookieName, cookie.ToString(), expires: st.Expires, httponly: true, path: CookiePath, secure: usingssl);
}
session.Cookie = PRNG.GetRandomString(32);
context.Response.AddCookie(AuthSessionCookieName, session.Cookie, expires: session.Expires, httponly: true, path: CookiePath, secure: usingssl);
if (ShortTermStorage == null)
{
Console.WriteLine("Missing short term storage module, make sure you load Ceen.Security.Login.DatabaseStorageModule or manually set a storage module");
}
await ShortTermStorage.AddSessionAsync(session);
SetLoginSuccess(context);
context.Request.UserID = userid;
}
