| 1 | /* $Id: VBoxGuestR3LibCredentials.cpp 33540 2010-10-28 09:27:05Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, user credentials.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*******************************************************************************
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| 29 | * Header Files *
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| 30 | *******************************************************************************/
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| 31 | #include <iprt/asm.h>
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| 32 | #include <iprt/mem.h>
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| 33 | #include <iprt/rand.h>
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| 34 | #include <iprt/string.h>
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| 35 | #include <VBox/log.h>
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| 36 |
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| 37 | #include "VBGLR3Internal.h"
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| 38 |
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| 39 |
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| 40 | /**
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| 41 | * Checks whether user credentials are available to the guest or not.
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| 42 | *
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| 43 | * @returns IPRT status value; VINF_SUCCESS if credentials are available,
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| 44 | * VERR_NOT_FOUND if not. Otherwise an error is occurred.
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| 45 | */
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| 46 | VBGLR3DECL(int) VbglR3CredentialsQueryAvailability(void)
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| 47 | {
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| 48 | VMMDevCredentials Req;
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| 49 | RT_ZERO(Req);
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| 50 | vmmdevInitRequest((VMMDevRequestHeader*)&Req, VMMDevReq_QueryCredentials);
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| 51 | Req.u32Flags |= VMMDEV_CREDENTIALS_QUERYPRESENCE;
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| 52 |
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| 53 | int rc = vbglR3GRPerform(&Req.header);
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| 54 | if (RT_SUCCESS(rc))
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| 55 | {
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| 56 | if ((Req.u32Flags & VMMDEV_CREDENTIALS_PRESENT) == 0)
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| 57 | rc = VERR_NOT_FOUND;
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| 58 | }
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| 59 | return rc;
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| 60 | }
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| 61 |
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| 62 |
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| 63 | /**
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| 64 | * Retrieves and clears the user credentials for logging into the guest OS.
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| 65 | *
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| 66 | * @returns IPRT status value
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| 67 | * @param ppszUser Receives pointer of allocated user name string.
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| 68 | * The returned pointer must be freed using VbglR3CredentialsDestroy().
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| 69 | * @param ppszPassword Receives pointer of allocated user password string.
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| 70 | * The returned pointer must be freed using VbglR3CredentialsDestroy().
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| 71 | * @param ppszDomain Receives pointer of allocated domain name string.
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| 72 | * The returned pointer must be freed using VbglR3CredentialsDestroy().
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| 73 | */
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| 74 | VBGLR3DECL(int) VbglR3CredentialsRetrieve(char **ppszUser, char **ppszPassword, char **ppszDomain)
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| 75 | {
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| 76 | VMMDevCredentials Req;
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| 77 | RT_ZERO(Req);
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| 78 | vmmdevInitRequest((VMMDevRequestHeader*)&Req, VMMDevReq_QueryCredentials);
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| 79 | Req.u32Flags |= VMMDEV_CREDENTIALS_READ | VMMDEV_CREDENTIALS_CLEAR;
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| 80 |
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| 81 | int rc = vbglR3GRPerform(&Req.header);
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| 82 | if (RT_SUCCESS(rc))
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| 83 | {
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| 84 | rc = RTStrDupEx(ppszUser, Req.szUserName);
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| 85 | if (RT_SUCCESS(rc))
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| 86 | {
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| 87 | rc = RTStrDupEx(ppszPassword, Req.szPassword);
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| 88 | if (RT_SUCCESS(rc))
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| 89 | {
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| 90 | rc = RTStrDupEx(ppszDomain, Req.szDomain);
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| 91 | if (RT_SUCCESS(rc))
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| 92 | return VINF_SUCCESS;
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| 93 |
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| 94 | RTStrFree(*ppszPassword);
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| 95 | }
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| 96 | RTStrFree(*ppszUser);
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| 97 | }
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| 98 | }
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| 99 | return rc;
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| 100 | }
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| 101 |
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| 102 |
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| 103 | /**
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| 104 | * Clears and frees the three strings.
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| 105 | *
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| 106 | * @param pszUser Receives pointer of the user name string to destroy.
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| 107 | * Optional.
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| 108 | * @param pszPassword Receives pointer of the password string to destroy.
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| 109 | * Optional.
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| 110 | * @param pszDomain Receives pointer of allocated domain name string.
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| 111 | * Optional.
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| 112 | * @param cPasses Number of wipe passes. The more the better + slower.
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| 113 | */
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| 114 | VBGLR3DECL(void) VbglR3CredentialsDestroy(char *pszUser, char *pszPassword, char *pszDomain, uint32_t cPasses)
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| 115 | {
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| 116 | /* wipe first */
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| 117 | if (pszUser)
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| 118 | RTMemWipeThoroughly(pszUser, strlen(pszUser) + 1, cPasses);
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| 119 | if (pszPassword)
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| 120 | RTMemWipeThoroughly(pszPassword, strlen(pszPassword) + 1, cPasses);
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| 121 | if (pszDomain)
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| 122 | RTMemWipeThoroughly(pszDomain, strlen(pszDomain) + 1, cPasses);
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| 123 |
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| 124 | /* then free. */
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| 125 | RTStrFree(pszUser);
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| 126 | RTStrFree(pszPassword);
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| 127 | RTStrFree(pszDomain);
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| 128 | }
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| 129 |
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