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/* $Id: VBoxGuestR3LibCredentials.cpp $ */
/** @file
* VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, user credentials.
*/
/*
* Copyright (C) 2009-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program 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, in version 3 of the
* License.
*
* This program 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 program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/asm.h>
#include <iprt/mem.h>
#include <iprt/rand.h>
#include <iprt/string.h>
#include <iprt/utf16.h>
#include <VBox/log.h>
#include "VBoxGuestR3LibInternal.h"
/**
* Checks whether user credentials are available to the guest or not.
*
* @returns IPRT status value; VINF_SUCCESS if credentials are available,
* VERR_NOT_FOUND if not. Otherwise an error is occurred.
*/
VBGLR3DECL(int) VbglR3CredentialsQueryAvailability(void)
{
VMMDevCredentials Req;
RT_ZERO(Req);
vmmdevInitRequest((VMMDevRequestHeader*)&Req, VMMDevReq_QueryCredentials);
Req.u32Flags |= VMMDEV_CREDENTIALS_QUERYPRESENCE;
int rc = vbglR3GRPerform(&Req.header);
if (RT_SUCCESS(rc))
{
if ((Req.u32Flags & VMMDEV_CREDENTIALS_PRESENT) == 0)
rc = VERR_NOT_FOUND;
}
return rc;
}
/**
* Retrieves and clears the user credentials for logging into the guest OS.
*
* @returns IPRT status value
* @param ppszUser Receives pointer of allocated user name string.
* The returned pointer must be freed using VbglR3CredentialsDestroy().
* @param ppszPassword Receives pointer of allocated user password string.
* The returned pointer must be freed using VbglR3CredentialsDestroy().
* @param ppszDomain Receives pointer of allocated domain name string.
* The returned pointer must be freed using VbglR3CredentialsDestroy().
*/
VBGLR3DECL(int) VbglR3CredentialsRetrieve(char **ppszUser, char **ppszPassword, char **ppszDomain)
{
AssertPtrReturn(ppszUser, VERR_INVALID_POINTER);
AssertPtrReturn(ppszPassword, VERR_INVALID_POINTER);
AssertPtrReturn(ppszDomain, VERR_INVALID_POINTER);
VMMDevCredentials Req;
RT_ZERO(Req);
vmmdevInitRequest((VMMDevRequestHeader*)&Req, VMMDevReq_QueryCredentials);
Req.u32Flags |= VMMDEV_CREDENTIALS_READ | VMMDEV_CREDENTIALS_CLEAR;
int rc = vbglR3GRPerform(&Req.header);
if (RT_SUCCESS(rc))
{
rc = RTStrDupEx(ppszUser, Req.szUserName);
if (RT_SUCCESS(rc))
{
rc = RTStrDupEx(ppszPassword, Req.szPassword);
if (RT_SUCCESS(rc))
{
rc = RTStrDupEx(ppszDomain, Req.szDomain);
if (RT_SUCCESS(rc))
return VINF_SUCCESS;
RTStrFree(*ppszPassword);
}
RTStrFree(*ppszUser);
}
}
return rc;
}
/**
* Retrieves and clears the user credentials for logging into the guest OS.
* UTF-16 version.
*
* @returns IPRT status value
* @param ppwszUser Receives pointer of allocated user name string.
* The returned pointer must be freed using VbglR3CredentialsDestroyUtf16().
* @param ppwszPassword Receives pointer of allocated user password string.
* The returned pointer must be freed using VbglR3CredentialsDestroyUtf16().
* @param ppwszDomain Receives pointer of allocated domain name string.
* The returned pointer must be freed using VbglR3CredentialsDestroyUtf16().
*/
VBGLR3DECL(int) VbglR3CredentialsRetrieveUtf16(PRTUTF16 *ppwszUser, PRTUTF16 *ppwszPassword, PRTUTF16 *ppwszDomain)
{
AssertPtrReturn(ppwszUser, VERR_INVALID_POINTER);
AssertPtrReturn(ppwszPassword, VERR_INVALID_POINTER);
AssertPtrReturn(ppwszDomain, VERR_INVALID_POINTER);
char *pszUser, *pszPassword, *pszDomain;
int rc = VbglR3CredentialsRetrieve(&pszUser, &pszPassword, &pszDomain);
if (RT_SUCCESS(rc))
{
PRTUTF16 pwszUser = NULL;
PRTUTF16 pwszPassword = NULL;
PRTUTF16 pwszDomain = NULL;
rc = RTStrToUtf16(pszUser, &pwszUser);
if (RT_SUCCESS(rc))
{
rc = RTStrToUtf16(pszPassword, &pwszPassword);
if (RT_SUCCESS(rc))
rc = RTStrToUtf16(pszDomain, &pwszDomain);
}
if (RT_SUCCESS(rc))
{
*ppwszUser = pwszUser;
*ppwszPassword = pwszPassword;
*ppwszDomain = pwszDomain;
}
else
VbglR3CredentialsDestroyUtf16(pwszUser, pwszPassword, pwszDomain, 3 /* Passes */);
VbglR3CredentialsDestroy(pszUser, pszPassword, pszDomain, 3 /* Passes */);
}
return rc;
}
/**
* Clears and frees the three strings.
*
* @param pszUser Receives pointer of the user name string to destroy.
* Optional.
* @param pszPassword Receives pointer of the password string to destroy.
* Optional.
* @param pszDomain Receives pointer of allocated domain name string.
* Optional.
* @param cPasses Number of wipe passes. The more the better + slower.
*/
VBGLR3DECL(void) VbglR3CredentialsDestroy(char *pszUser, char *pszPassword, char *pszDomain, uint32_t cPasses)
{
/* wipe first */
if (pszUser)
RTMemWipeThoroughly(pszUser, strlen(pszUser) + 1, cPasses);
if (pszPassword)
RTMemWipeThoroughly(pszPassword, strlen(pszPassword) + 1, cPasses);
if (pszDomain)
RTMemWipeThoroughly(pszDomain, strlen(pszDomain) + 1, cPasses);
/* then free. */
RTStrFree(pszUser);
RTStrFree(pszPassword);
RTStrFree(pszDomain);
}
/**
* Clears and frees the three strings. UTF-16 version.
*
* @param pwszUser Receives pointer of the user name string to destroy.
* Optional.
* @param pwszPassword Receives pointer of the password string to destroy.
* Optional.
* @param pwszDomain Receives pointer of allocated domain name string.
* Optional.
* @param cPasses Number of wipe passes. The more the better + slower.
*/
VBGLR3DECL(void) VbglR3CredentialsDestroyUtf16(PRTUTF16 pwszUser, PRTUTF16 pwszPassword, PRTUTF16 pwszDomain,
uint32_t cPasses)
{
/* wipe first */
if (pwszUser)
RTMemWipeThoroughly(pwszUser, (RTUtf16Len(pwszUser) + 1) * sizeof(RTUTF16), cPasses);
if (pwszPassword)
RTMemWipeThoroughly(pwszPassword, (RTUtf16Len(pwszPassword) + 1) * sizeof(RTUTF16), cPasses);
if (pwszDomain)
RTMemWipeThoroughly(pwszDomain, (RTUtf16Len(pwszDomain) + 1) * sizeof(RTUTF16), cPasses);
/* then free. */
RTUtf16Free(pwszUser);
RTUtf16Free(pwszPassword);
RTUtf16Free(pwszDomain);
}
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