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https://github.com/kasmtech/KasmVNC.git
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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/* Copyright (C) 2002-2005 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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// CSecurityVncAuth
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//
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// XXX not thread-safe, because d3des isn't - do we need to worry about this?
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//
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#include <string.h>
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#include <stdio.h>
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#include <rfb/CConnection.h>
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#include <rfb/Password.h>
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#include <rfb/CSecurityVncAuth.h>
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#include <rfb/util.h>
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#include <rfb/Security.h>
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extern "C" {
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#include <rfb/d3des.h>
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}
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#include <rdr/InStream.h>
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#include <rdr/OutStream.h>
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using namespace rfb;
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static const int vncAuthChallengeSize = 16;
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bool CSecurityVncAuth::processMsg(CConnection* cc)
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{
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rdr::InStream* is = cc->getInStream();
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rdr::OutStream* os = cc->getOutStream();
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// Read the challenge & obtain the user's password
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rdr::U8 challenge[vncAuthChallengeSize];
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is->readBytes(challenge, vncAuthChallengeSize);
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PlainPasswd passwd;
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(CSecurity::upg)->getUserPasswd(cc->isSecure(), 0, &passwd.buf);
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// Calculate the correct response
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rdr::U8 key[8];
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int pwdLen = strlen(passwd.buf);
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for (int i=0; i<8; i++)
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key[i] = i<pwdLen ? passwd.buf[i] : 0;
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deskey(key, EN0);
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for (int j = 0; j < vncAuthChallengeSize; j += 8)
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des(challenge+j, challenge+j);
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// Return the response to the server
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os->writeBytes(challenge, vncAuthChallengeSize);
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os->flush();
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return true;
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}
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