| 1 | /* $Id: VBoxServiceUtils.cpp 86876 2020-11-12 16:38:00Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxServiceUtils - Some utility functions.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009-2020 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 |
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| 18 |
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| 19 | /*********************************************************************************************************************************
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| 20 | * Header Files *
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| 21 | *********************************************************************************************************************************/
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| 22 | #ifdef RT_OS_WINDOWS
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| 23 | # include <iprt/win/windows.h>
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| 24 | # include <iprt/param.h>
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| 25 | # include <iprt/path.h>
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| 26 | #endif
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| 27 | #include <iprt/assert.h>
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| 28 | #include <iprt/mem.h>
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| 29 | #include <iprt/string.h>
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| 30 |
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| 31 | #include <VBox/VBoxGuestLib.h>
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| 32 | #include "VBoxServiceInternal.h"
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| 33 |
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| 34 |
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| 35 | #ifdef VBOX_WITH_GUEST_PROPS
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| 36 | /**
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| 37 | * Reads a guest property as a 32-bit value.
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| 38 | *
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| 39 | * @returns VBox status code, fully bitched.
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| 40 | *
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| 41 | * @param u32ClientId The HGCM client ID for the guest property session.
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| 42 | * @param pszPropName The property name.
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| 43 | * @param pu32 Where to store the 32-bit value.
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| 44 | *
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| 45 | */
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| 46 | int VGSvcReadPropUInt32(uint32_t u32ClientId, const char *pszPropName, uint32_t *pu32, uint32_t u32Min, uint32_t u32Max)
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| 47 | {
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| 48 | char *pszValue;
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| 49 | int rc = VbglR3GuestPropReadEx(u32ClientId, pszPropName, &pszValue, NULL /* ppszFlags */, NULL /* puTimestamp */);
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| 50 | if (RT_SUCCESS(rc))
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| 51 | {
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| 52 | char *pszNext;
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| 53 | rc = RTStrToUInt32Ex(pszValue, &pszNext, 0, pu32);
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| 54 | if ( RT_SUCCESS(rc)
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| 55 | && (*pu32 < u32Min || *pu32 > u32Max))
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| 56 | rc = VGSvcError("The guest property value %s = %RU32 is out of range [%RU32..%RU32].\n",
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| 57 | pszPropName, *pu32, u32Min, u32Max);
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| 58 | RTStrFree(pszValue);
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| 59 | }
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| 60 | return rc;
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| 61 | }
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| 62 |
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| 63 | /**
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| 64 | * Reads a guest property from the host side.
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| 65 | *
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| 66 | * @returns IPRT status code, fully bitched.
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| 67 | * @param u32ClientId The HGCM client ID for the guest property session.
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| 68 | * @param pszPropName The property name.
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| 69 | * @param fReadOnly Whether or not this property needs to be read only
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| 70 | * by the guest side. Otherwise VERR_ACCESS_DENIED will
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| 71 | * be returned.
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| 72 | * @param ppszValue Where to return the value. This is always set
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| 73 | * to NULL. Free it using RTStrFree().
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| 74 | * @param ppszFlags Where to return the value flags. Free it
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| 75 | * using RTStrFree(). Optional.
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| 76 | * @param puTimestamp Where to return the timestamp. This is only set
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| 77 | * on success. Optional.
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| 78 | */
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| 79 | int VGSvcReadHostProp(uint32_t u32ClientId, const char *pszPropName, bool fReadOnly,
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| 80 | char **ppszValue, char **ppszFlags, uint64_t *puTimestamp)
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| 81 | {
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| 82 | AssertPtrReturn(ppszValue, VERR_INVALID_PARAMETER);
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| 83 |
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| 84 | char *pszValue = NULL;
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| 85 | char *pszFlags = NULL;
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| 86 | int rc = VbglR3GuestPropReadEx(u32ClientId, pszPropName, &pszValue, &pszFlags, puTimestamp);
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| 87 | if (RT_SUCCESS(rc))
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| 88 | {
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| 89 | /* Check security bits. */
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| 90 | if ( fReadOnly /* Do we except a guest read-only property */
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| 91 | && !RTStrStr(pszFlags, "RDONLYGUEST"))
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| 92 | {
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| 93 | /* If we want a property which is read-only on the guest
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| 94 | * and it is *not* marked as such, deny access! */
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| 95 | rc = VERR_ACCESS_DENIED;
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| 96 | }
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| 97 |
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| 98 | if (RT_SUCCESS(rc))
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| 99 | {
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| 100 | *ppszValue = pszValue;
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| 101 |
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| 102 | if (ppszFlags)
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| 103 | *ppszFlags = pszFlags;
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| 104 | else if (pszFlags)
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| 105 | RTStrFree(pszFlags);
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| 106 | }
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| 107 | else
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| 108 | {
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| 109 | if (pszValue)
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| 110 | RTStrFree(pszValue);
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| 111 | if (pszFlags)
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| 112 | RTStrFree(pszFlags);
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| 113 | }
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| 114 | }
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| 115 |
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| 116 | return rc;
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| 117 | }
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| 118 |
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| 119 |
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| 120 | /**
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| 121 | * Wrapper around VbglR3GuestPropWriteValue that does value formatting and
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| 122 | * logging.
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| 123 | *
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| 124 | * @returns VBox status code. Errors will be logged.
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| 125 | *
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| 126 | * @param u32ClientId The HGCM client ID for the guest property session.
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| 127 | * @param pszName The property name.
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| 128 | * @param pszValueFormat The property format string. If this is NULL then
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| 129 | * the property will be deleted (if possible).
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| 130 | * @param ... Format arguments.
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| 131 | */
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| 132 | int VGSvcWritePropF(uint32_t u32ClientId, const char *pszName, const char *pszValueFormat, ...)
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| 133 | {
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| 134 | AssertPtr(pszName);
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| 135 | int rc;
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| 136 | if (pszValueFormat != NULL)
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| 137 | {
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| 138 | va_list va;
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| 139 | va_start(va, pszValueFormat);
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| 140 | VGSvcVerbose(3, "Writing guest property '%s' = '%N'\n", pszName, pszValueFormat, &va);
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| 141 | va_end(va);
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| 142 |
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| 143 | va_start(va, pszValueFormat);
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| 144 | rc = VbglR3GuestPropWriteValueV(u32ClientId, pszName, pszValueFormat, va);
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| 145 | va_end(va);
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| 146 |
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| 147 | if (RT_FAILURE(rc))
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| 148 | VGSvcError("Error writing guest property '%s' (rc=%Rrc)\n", pszName, rc);
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| 149 | }
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| 150 | else
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| 151 | {
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| 152 | VGSvcVerbose(3, "Deleting guest property '%s'\n", pszName);
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| 153 | rc = VbglR3GuestPropWriteValue(u32ClientId, pszName, NULL);
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| 154 | if (RT_FAILURE(rc))
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| 155 | VGSvcError("Error deleting guest property '%s' (rc=%Rrc)\n", pszName, rc);
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| 156 | }
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| 157 | return rc;
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| 158 | }
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| 159 |
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| 160 | #endif /* VBOX_WITH_GUEST_PROPS */
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| 161 | #ifdef RT_OS_WINDOWS
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| 162 |
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| 163 | /**
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| 164 | * Helper for vgsvcUtilGetFileVersion and attempts to read and parse
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| 165 | * FileVersion.
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| 166 | *
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| 167 | * @returns Success indicator.
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| 168 | */
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| 169 | static bool vgsvcUtilGetFileVersionOwn(LPSTR pVerData, PDWORD pdwMajor, PDWORD pdwMinor, PDWORD pdwBuildNumber,
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| 170 | PDWORD pdwRevisionNumber)
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| 171 | {
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| 172 | UINT cchStrValue = 0;
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| 173 | LPTSTR pStrValue = NULL;
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| 174 | if (!VerQueryValueA(pVerData, "\\StringFileInfo\\040904b0\\FileVersion", (LPVOID *)&pStrValue, &cchStrValue))
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| 175 | return false;
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| 176 |
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| 177 | /** @todo r=bird: get rid of this. Avoid sscanf like the plague! */
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| 178 | if (sscanf(pStrValue, "%ld.%ld.%ld.%ld", pdwMajor, pdwMinor, pdwBuildNumber, pdwRevisionNumber) != 4)
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| 179 | return false;
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| 180 |
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| 181 | return true;
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| 182 | }
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| 183 |
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| 184 |
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| 185 | /**
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| 186 | * Worker for VGSvcUtilWinGetFileVersionString.
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| 187 | *
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| 188 | * @returns VBox status code.
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| 189 | * @param pszFilename ASCII & ANSI & UTF-8 compliant name.
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| 190 | * @param pdwMajor Where to return the major version number.
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| 191 | * @param pdwMinor Where to return the minor version number.
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| 192 | * @param pdwBuildNumber Where to return the build number.
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| 193 | * @param pdwRevisionNumber Where to return the revision number.
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| 194 | */
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| 195 | static int vgsvcUtilGetFileVersion(const char *pszFilename, PDWORD pdwMajor, PDWORD pdwMinor, PDWORD pdwBuildNumber,
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| 196 | PDWORD pdwRevisionNumber)
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| 197 | {
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| 198 | int rc;
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| 199 |
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| 200 | *pdwMajor = *pdwMinor = *pdwBuildNumber = *pdwRevisionNumber = 0;
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| 201 |
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| 202 | /*
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| 203 | * Get the file version info.
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| 204 | */
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| 205 | DWORD dwHandleIgnored;
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| 206 | DWORD cbVerData = GetFileVersionInfoSizeA(pszFilename, &dwHandleIgnored);
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| 207 | if (cbVerData)
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| 208 | {
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| 209 | LPTSTR pVerData = (LPTSTR)RTMemTmpAllocZ(cbVerData);
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| 210 | if (pVerData)
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| 211 | {
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| 212 | if (GetFileVersionInfoA(pszFilename, dwHandleIgnored, cbVerData, pVerData))
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| 213 | {
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| 214 | /*
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| 215 | * Try query and parse the FileVersion string our selves first
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| 216 | * since this will give us the correct revision number when
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| 217 | * it goes beyond the range of an uint16_t / WORD.
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| 218 | */
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| 219 | if (vgsvcUtilGetFileVersionOwn(pVerData, pdwMajor, pdwMinor, pdwBuildNumber, pdwRevisionNumber))
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| 220 | rc = VINF_SUCCESS;
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| 221 | else
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| 222 | {
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| 223 | /* Fall back on VS_FIXEDFILEINFO */
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| 224 | UINT cbFileInfoIgnored = 0;
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| 225 | VS_FIXEDFILEINFO *pFileInfo = NULL;
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| 226 | if (VerQueryValue(pVerData, "\\", (LPVOID *)&pFileInfo, &cbFileInfoIgnored))
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| 227 | {
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| 228 | *pdwMajor = HIWORD(pFileInfo->dwFileVersionMS);
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| 229 | *pdwMinor = LOWORD(pFileInfo->dwFileVersionMS);
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| 230 | *pdwBuildNumber = HIWORD(pFileInfo->dwFileVersionLS);
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| 231 | *pdwRevisionNumber = LOWORD(pFileInfo->dwFileVersionLS);
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| 232 | rc = VINF_SUCCESS;
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| 233 | }
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| 234 | else
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| 235 | {
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| 236 | rc = RTErrConvertFromWin32(GetLastError());
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| 237 | VGSvcVerbose(3, "No file version value for file '%s' available! (%d / rc=%Rrc)\n",
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| 238 | pszFilename, GetLastError(), rc);
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| 239 | }
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| 240 | }
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| 241 | }
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| 242 | else
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| 243 | {
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| 244 | rc = RTErrConvertFromWin32(GetLastError());
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| 245 | VGSvcVerbose(0, "GetFileVersionInfo(%s) -> %u / %Rrc\n", pszFilename, GetLastError(), rc);
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| 246 | }
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| 247 |
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| 248 | RTMemTmpFree(pVerData);
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| 249 | }
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| 250 | else
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| 251 | {
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| 252 | VGSvcVerbose(0, "Failed to allocate %u byte for file version info for '%s'\n", cbVerData, pszFilename);
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| 253 | rc = VERR_NO_TMP_MEMORY;
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| 254 | }
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| 255 | }
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| 256 | else
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| 257 | {
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| 258 | rc = RTErrConvertFromWin32(GetLastError());
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| 259 | VGSvcVerbose(3, "GetFileVersionInfoSize(%s) -> %u / %Rrc\n", pszFilename, GetLastError(), rc);
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| 260 | }
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| 261 | return rc;
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| 262 | }
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| 263 |
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| 264 |
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| 265 | /**
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| 266 | * Gets a re-formatted version string from the VS_FIXEDFILEINFO table.
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| 267 | *
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| 268 | * @returns VBox status code. The output buffer is always valid and the status
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| 269 | * code can safely be ignored.
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| 270 | *
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| 271 | * @param pszPath The base path.
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| 272 | * @param pszFilename The filename.
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| 273 | * @param pszVersion Where to return the version string.
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| 274 | * @param cbVersion The size of the version string buffer. This MUST be
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| 275 | * at least 2 bytes!
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| 276 | */
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| 277 | int VGSvcUtilWinGetFileVersionString(const char *pszPath, const char *pszFilename, char *pszVersion, size_t cbVersion)
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| 278 | {
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| 279 | /*
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| 280 | * We will ALWAYS return with a valid output buffer.
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| 281 | */
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| 282 | AssertReturn(cbVersion >= 2, VERR_BUFFER_OVERFLOW);
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| 283 | pszVersion[0] = '-';
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| 284 | pszVersion[1] = '\0';
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| 285 |
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| 286 | /*
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| 287 | * Create the path and query the bits.
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| 288 | */
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| 289 | char szFullPath[RTPATH_MAX];
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| 290 | int rc = RTPathJoin(szFullPath, sizeof(szFullPath), pszPath, pszFilename);
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| 291 | if (RT_SUCCESS(rc))
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| 292 | {
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| 293 | DWORD dwMajor, dwMinor, dwBuild, dwRev;
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| 294 | rc = vgsvcUtilGetFileVersion(szFullPath, &dwMajor, &dwMinor, &dwBuild, &dwRev);
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| 295 | if (RT_SUCCESS(rc))
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| 296 | RTStrPrintf(pszVersion, cbVersion, "%u.%u.%ur%u", dwMajor, dwMinor, dwBuild, dwRev);
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| 297 | }
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| 298 | return rc;
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| 299 | }
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| 300 |
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| 301 | #endif /* RT_OS_WINDOWS */
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| 302 |
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