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