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/* Copyright (C) 2005 Martin Koegler
* Copyright (C) 2006 OCCAM Financial Technology
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <rfb/SSecurityPlain.h>
#include <rfb/SConnection.h>
#include <rfb/Exception.h>
#include <rdr/InStream.h>
#if !defined(WIN32) && !defined(__APPLE__)
#include <rfb/UnixPasswordValidator.h>
#endif
#ifdef WIN32
#include <rfb/WinPasswdValidator.h>
#endif
using namespace rfb;
StringParameter PasswordValidator::plainUsers
("PlainUsers",
"Users permitted to access via Plain security type (including TLSPlain, X509Plain etc.)"
#ifdef HAVE_NETTLE
" or RSA-AES security types (RA2, RA2ne, RA2_256, RA2ne_256)"
#endif
,
"");
bool PasswordValidator::validUser(const char* username)
{
CharArray users(plainUsers.getValueStr()), user;
while (users.buf) {
strSplit(users.buf, ',', &user.buf, &users.buf);
#ifdef WIN32
if (0 == stricmp(user.buf, "*"))
return true;
if (0 == stricmp(user.buf, username))
return true;
#else
if (!strcmp(user.buf, "*"))
return true;
if (!strcmp(user.buf, username))
return true;
#endif
}
return false;
}
SSecurityPlain::SSecurityPlain(SConnection* sc) : SSecurity(sc)
{
#ifdef WIN32
valid = new WinPasswdValidator();
#elif !defined(__APPLE__)
valid = new UnixPasswordValidator();
#else
valid = NULL;
#endif
state = 0;
}
bool SSecurityPlain::processMsg()
{
rdr::InStream* is = sc->getInStream();
char password[1024];
if (!valid)
throw AuthFailureException("No password validator configured");
if (state == 0) {
if (!is->hasData(8))
return false;
ulen = is->readU32();
if (ulen >= sizeof(username))
throw AuthFailureException("Too long username");
plen = is->readU32();
if (plen >= sizeof(password))
throw AuthFailureException("Too long password");
state = 1;
}
if (state == 1) {
if (!is->hasData(ulen + plen))
return false;
state = 2;
is->readBytes(username, ulen);
is->readBytes(password, plen);
password[plen] = 0;
username[ulen] = 0;
plen = 0;
if (!valid->validate(sc, username, password))
throw AuthFailureException("invalid password or username");
}
return true;
}
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