static void CheckExpired(int count)
{
if (count < 10)
{
return;
}
DateTime t = DateTime.MaxValue;
DateTime now = DateTime.Now;
List <int>?list = null;
foreach (KeyValuePair <int, AuthDigestSession> kvp in cache)
{
AuthDigestSession elem = kvp.Value;
if (elem.LastUse < t && (elem.LastUse - now).Ticks > TimeSpan.TicksPerMinute * 10)
{
t = elem.LastUse;
if (list == null)
{
list = new List <int> ();
}
list.Add(kvp.Key);
}
}
if (list != null)
{
foreach (int k in list)
{
cache.Remove(k);
}
}
}
public Authorization?Authenticate(string challenge, HttpURLConnection request, ICredentials credentials)
{
if (credentials == null || challenge == null)
{
Logger.Log(LogLevel.Info, LOG_APP, "No credentials or no challenge");
return(null);
}
string header = challenge.Trim();
if (header.IndexOf("digest", StringComparison.OrdinalIgnoreCase) == -1)
{
Logger.Log(LogLevel.Info, LOG_APP, "Not a digest auth request");
return(null);
}
var currDS = new AuthDigestSession();
if (!currDS.Parse(challenge))
{
Logger.Log(LogLevel.Info, LOG_APP, "Unable to parse challenge");
return(null);
}
var uri = new Uri(request.URL?.ToString() !);
int hashcode = uri.GetHashCode() ^ credentials.GetHashCode() ^ (currDS.Nonce?.GetHashCode() ?? 1);
AuthDigestSession?ds = null;
bool addDS = false;
if (!Cache.TryGetValue(hashcode, out ds) || ds == null)
{
addDS = true;
}
if (addDS)
{
ds = currDS;
}
else if (!ds !.Parse(challenge))
{
Logger.Log(LogLevel.Info, LOG_APP, "Current DS failed to parse the challenge");
return(null);
}
if (addDS)
{
Cache.Add(hashcode, ds);
}
return(ds.Authenticate(request, credentials));
}
public Authorization PreAuthenticate(HttpURLConnection request, ICredentials credentials)
{
if (request == null || credentials == null)
{
Logger.Log(LogLevel.Info, LOG_APP, "No credentials or no challenge");
return(null);
}
var uri = new Uri(request.URL.ToString());
int hashcode = uri.GetHashCode() ^ credentials.GetHashCode();
AuthDigestSession ds = null;
if (!Cache.TryGetValue(hashcode, out ds) || ds == null)
{
return(null);
}
return(ds.Authenticate(request, credentials));
}
