mirror of
https://github.com/kasmtech/KasmVNC.git
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121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
/* Copyright (C) 2005 Martin Koegler
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* Copyright (C) 2006 OCCAM Financial Technology
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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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <rfb/SSecurityPlain.h>
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#include <rfb/SConnection.h>
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#include <rfb/Exception.h>
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#include <rdr/InStream.h>
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#ifdef HAVE_PAM
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#include <rfb/UnixPasswordValidator.h>
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#endif
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#ifdef BUILD_WIN
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#include <rfb/WinPasswdValidator.h>
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#endif
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using namespace rfb;
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StringParameter PasswordValidator::plainUsers
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("PlainUsers",
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"Users permitted to access via Plain security type (including TLSPlain, X509Plain etc.)",
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"");
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bool PasswordValidator::validUser(const char* username)
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{
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CharArray users(strDup(plainUsers.getValueStr())), user;
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while (users.buf) {
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strSplit(users.buf, ',', &user.buf, &users.buf);
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#ifdef WIN32
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if (0 == stricmp(user.buf, "*"))
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return true;
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if (0 == stricmp(user.buf, username))
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return true;
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#else
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if (!strcmp(user.buf, "*"))
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return true;
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if (!strcmp(user.buf, username))
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return true;
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#endif
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}
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return false;
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}
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SSecurityPlain::SSecurityPlain()
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{
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#ifdef HAVE_PAM
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valid = new UnixPasswordValidator();
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#elif BUILD_WIN
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valid = new WinPasswdValidator();
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#else
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valid = NULL;
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#endif
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state = 0;
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}
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bool SSecurityPlain::processMsg(SConnection* sc)
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{
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rdr::InStream* is = sc->getInStream();
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char* pw;
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char *uname;
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CharArray password;
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if (!valid)
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throw AuthFailureException("No password validator configured");
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if (state == 0) {
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if (!is->checkNoWait(8))
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return false;
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ulen = is->readU32();
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if (ulen > MaxSaneUsernameLength)
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throw AuthFailureException("Too long username");
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plen = is->readU32();
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if (plen > MaxSanePasswordLength)
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throw AuthFailureException("Too long password");
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state = 1;
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}
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if (state == 1) {
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if (!is->checkNoWait(ulen + plen))
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return false;
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state = 2;
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pw = new char[plen + 1];
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uname = new char[ulen + 1];
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username.replaceBuf(uname);
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password.replaceBuf(pw);
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is->readBytes(uname, ulen);
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is->readBytes(pw, plen);
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pw[plen] = 0;
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uname[ulen] = 0;
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plen = 0;
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if (!valid->validate(sc, uname, pw))
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throw AuthFailureException("invalid password or username");
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}
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return true;
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}
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