mirror of
https://github.com/TigerVNC/tigervnc.git
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47ed8d321c
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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//
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// SSecurityVncAuth
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//
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#include <rfb/SSecurityVncAuth.h>
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#include <rdr/RandomStream.h>
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#include <rfb/SConnection.h>
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#include <rfb/vncAuth.h>
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#include <rfb/Configuration.h>
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#include <rfb/LogWriter.h>
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#include <rfb/util.h>
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#include <string.h>
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#include <stdio.h>
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using namespace rfb;
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static LogWriter vlog("VncAuth");
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SSecurityVncAuth::SSecurityVncAuth(VncAuthPasswdGetter* pg_)
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: sentChallenge(false), responsePos(0), pg(pg_)
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{
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}
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bool SSecurityVncAuth::processMsg(SConnection* sc, bool* done)
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{
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*done = false;
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rdr::InStream* is = sc->getInStream();
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rdr::OutStream* os = sc->getOutStream();
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if (!sentChallenge) {
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rdr::RandomStream rs;
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rs.readBytes(challenge, vncAuthChallengeSize);
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os->writeBytes(challenge, vncAuthChallengeSize);
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os->flush();
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sentChallenge = true;
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return true;
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}
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if (responsePos >= vncAuthChallengeSize) return false;
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while (is->checkNoWait(1) && responsePos < vncAuthChallengeSize) {
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response[responsePos++] = is->readU8();
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}
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if (responsePos < vncAuthChallengeSize) return true;
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CharArray passwd(pg->getVncAuthPasswd());
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// Beyond this point, there is no more VNCAuth protocol to perform.
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*done = true;
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if (!passwd.buf) {
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failureMessage_.buf = strDup("No password configured for VNC Auth");
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vlog.error(failureMessage_.buf);
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return false;
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}
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vncAuthEncryptChallenge(challenge, passwd.buf);
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memset(passwd.buf, 0, strlen(passwd.buf));
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if (memcmp(challenge, response, vncAuthChallengeSize) != 0) {
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return false;
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}
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return true;
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}
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