1 files changed, 120 insertions, 0 deletions
diff --git a/kio/kssl/ksslcsessioncache.cc b/kio/kssl/ksslcsessioncache.cc
new file mode 100644
index 000000000..7dd1c956b
--- /dev/null
+++ b/kio/kssl/ksslcsessioncache.cc
@@ -0,0 +1,120 @@
+/* This file is part of the KDE project
+ *
+ * Copyright (C) 2003 Stefan Rompf <sux@loplof.de>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <qpair.h>
+#include <qstring.h>
+#include <qptrlist.h>
+
+#include <kdebug.h>
+#include <kstaticdeleter.h>
+#include <kurl.h>
+
+#ifdef Q_WS_WIN
+#include "ksslconfig_win.h"
+#else
+#include "ksslconfig.h"
+#endif
+
+#include "ksslcsessioncache.h"
+
+/* 
+ * Operation:
+ *
+ * Sessions will be stored per running application, not KDE
+ * wide, to avoid security problems with hostile programs
+ * that negotiate sessions with weak cryptographic keys and store
+ * them for everybody to use - I really don't want that.
+ *
+ * Retrieval is organised similiar to George's thoughts in the KSSLD
+ * certificate cache: The cache is organised as a list, with the
+ * recently fetched (or stored) session first.
+ *
+ * The cache has an artificial limit of 32 sessions (should really
+ * be enough), and relies on the peer server for timeouts
+ *
+ */
+#define MAX_ENTRIES 32
+
+#ifdef KSSL_HAVE_SSL
+
+typedef QPair<QString,QString> KSSLCSession;
+typedef QPtrList<KSSLCSession> KSSLCSessions;
+
+static KSSLCSessions *sessions = 0L;
+static KStaticDeleter<KSSLCSessions> med;
+
+
+static QString URLtoKey(const KURL &kurl) {
+    return kurl.host() + ":" + kurl.protocol() + ":" + QString::number(kurl.port());
+}
+
+
+static void setup() {
+    KSSLCSessions *ses = new KSSLCSessions;
+    ses->setAutoDelete(true);
+    med.setObject(sessions, ses);
+}
+
+#endif
+
+QString KSSLCSessionCache::getSessionForURL(const KURL &kurl) {
+#ifdef KSSL_HAVE_SSL
+    if (!sessions) return QString::null;
+    QString key = URLtoKey(kurl);
+
+    for(KSSLCSession *it = sessions->first(); it; it=sessions->next()) {
+	if (it->first == key) {
+	    sessions->take();
+	    sessions->prepend(it);
+	    return it->second;
+	}
+    }
+
+    // Negative caching disabled: cache pollution
+#if 0 
+    kdDebug(7029) <<"Negative caching " <<key <<endl;
+    if (sessions->count() >= MAX_ENTRIES) sessions->removeLast();
+    sessions->prepend(new KSSLCSession(key, QString::null));
+#endif
+
+#endif
+    return QString::null;
+}
+
+
+void KSSLCSessionCache::putSessionForURL(const KURL &kurl, const QString &session) {
+#ifdef KSSL_HAVE_SSL
+    if (!sessions) setup();
+    QString key = URLtoKey(kurl);
+    KSSLCSession *it;
+
+    for(it = sessions->first(); it && it->first != key; it=sessions->next());
+
+    if (it) {
+	sessions->take();
+	it->second = session;
+    } else {
+	it = new KSSLCSession(key, session);
+	if (sessions->count() >= MAX_ENTRIES) sessions->removeLast();
+    }
+
+    sessions->prepend(it);
+#endif
+}