| 1 | /* $Id: VBoxWindowsAdditions.cpp 83843 2020-04-20 09:31:57Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxWindowsAdditions - The Windows Guest Additions Loader.
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| 4 | *
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| 5 | * This is STUB which select whether to install 32-bit or 64-bit additions.
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| 6 | */
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| 7 |
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| 8 | /*
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| 9 | * Copyright (C) 2006-2020 Oracle Corporation
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| 10 | *
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| 11 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 12 | * available from http://www.virtualbox.org. This file is free software;
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| 13 | * you can redistribute it and/or modify it under the terms of the GNU
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| 14 | * General Public License (GPL) as published by the Free Software
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| 15 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 16 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 17 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 18 | */
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| 19 |
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| 20 |
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| 21 | /*********************************************************************************************************************************
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| 22 | * Header Files *
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| 23 | *********************************************************************************************************************************/
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| 24 | #include <iprt/cdefs.h>
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| 25 | #include <iprt/win/windows.h>
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| 26 | #ifndef ERROR_ELEVATION_REQUIRED /* Windows Vista and later. */
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| 27 | # define ERROR_ELEVATION_REQUIRED 740
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| 28 | #endif
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| 29 |
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| 30 | #include <stdio.h>
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| 31 | #include <string.h>
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| 32 |
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| 33 |
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| 34 | static BOOL IsWow64(void)
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| 35 | {
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| 36 | BOOL fIsWow64 = FALSE;
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| 37 | typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS)(HANDLE, PBOOL);
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| 38 | LPFN_ISWOW64PROCESS fnIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress(GetModuleHandle(L"kernel32"), "IsWow64Process");
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| 39 | if (fnIsWow64Process != NULL)
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| 40 | {
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| 41 | if (!fnIsWow64Process(GetCurrentProcess(), &fIsWow64))
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| 42 | {
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| 43 | fwprintf(stderr, L"ERROR: Could not determine process type!\n");
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| 44 |
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| 45 | /* Error in retrieving process type - assume that we're running on 32bit. */
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| 46 | fIsWow64 = FALSE;
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| 47 | }
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| 48 | }
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| 49 | return fIsWow64;
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| 50 | }
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| 51 |
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| 52 | static void WaitForProcess2(HANDLE hProcess, int *piExitCode)
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| 53 | {
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| 54 | /*
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| 55 | * Wait for the process, make sure the deal with messages.
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| 56 | */
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| 57 | for (;;)
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| 58 | {
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| 59 | DWORD dwRc = MsgWaitForMultipleObjects(1, &hProcess, FALSE, 5000/*ms*/, QS_ALLEVENTS);
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| 60 |
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| 61 | MSG Msg;
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| 62 | while (PeekMessageW(&Msg, NULL, 0, 0, PM_REMOVE))
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| 63 | {
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| 64 | TranslateMessage(&Msg);
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| 65 | DispatchMessageW(&Msg);
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| 66 | }
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| 67 |
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| 68 | if (dwRc == WAIT_OBJECT_0)
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| 69 | break;
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| 70 | if ( dwRc != WAIT_TIMEOUT
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| 71 | && dwRc != WAIT_OBJECT_0 + 1)
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| 72 | {
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| 73 | fwprintf(stderr, L"ERROR: MsgWaitForMultipleObjects failed: %lu (%lu)\n", dwRc, GetLastError());
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| 74 | break;
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| 75 | }
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| 76 | }
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| 77 |
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| 78 | /*
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| 79 | * Collect the process info.
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| 80 | */
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| 81 | DWORD dwExitCode;
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| 82 | if (GetExitCodeProcess(hProcess, &dwExitCode))
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| 83 | *piExitCode = (int)dwExitCode;
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| 84 | else
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| 85 | {
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| 86 | fwprintf(stderr, L"ERROR: GetExitCodeProcess failed: %lu\n", GetLastError());
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| 87 | *piExitCode = 16;
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| 88 | }
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| 89 | }
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| 90 |
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| 91 | static void WaitForProcess(HANDLE hProcess, int *piExitCode)
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| 92 | {
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| 93 | DWORD WaitRc = WaitForSingleObjectEx(hProcess, INFINITE, TRUE);
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| 94 | while ( WaitRc == WAIT_IO_COMPLETION
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| 95 | || WaitRc == WAIT_TIMEOUT)
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| 96 | WaitRc = WaitForSingleObjectEx(hProcess, INFINITE, TRUE);
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| 97 | if (WaitRc == WAIT_OBJECT_0)
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| 98 | {
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| 99 | DWORD dwExitCode;
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| 100 | if (GetExitCodeProcess(hProcess, &dwExitCode))
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| 101 | *piExitCode = (int)dwExitCode;
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| 102 | else
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| 103 | {
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| 104 | fwprintf(stderr, L"ERROR: GetExitCodeProcess failed: %lu\n", GetLastError());
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| 105 | *piExitCode = 16;
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| 106 | }
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| 107 | }
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| 108 | else
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| 109 | {
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| 110 | fwprintf(stderr, L"ERROR: WaitForSingleObjectEx failed: %lu (%lu)\n", WaitRc, GetLastError());
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| 111 | *piExitCode = 16;
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| 112 | }
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| 113 | }
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| 114 |
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| 115 | int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
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| 116 | {
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| 117 | RT_NOREF(hInstance, hPrevInstance, lpCmdLine, nCmdShow);
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| 118 |
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| 119 | /*
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| 120 | * Gather the parameters of the real installer program.
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| 121 | */
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| 122 |
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| 123 | SetLastError(NO_ERROR);
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| 124 | WCHAR wszCurDir[_MAX_PATH] = { 0 };
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| 125 | DWORD cchCurDir = GetCurrentDirectoryW(sizeof(wszCurDir), wszCurDir);
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| 126 | if (cchCurDir == 0 || cchCurDir >= sizeof(wszCurDir))
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| 127 | {
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| 128 | fwprintf(stderr, L"ERROR: GetCurrentDirectoryW failed: %lu (ret %lu)\n", GetLastError(), cchCurDir);
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| 129 | return 12;
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| 130 | }
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| 131 |
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| 132 | SetLastError(NO_ERROR);
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| 133 | WCHAR wszModule[_MAX_PATH] = { 0 };
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| 134 | DWORD cchModule = GetModuleFileNameW(NULL, wszModule, sizeof(wszModule));
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| 135 | if (cchModule == 0 || cchModule >= sizeof(wszModule))
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| 136 | {
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| 137 | fwprintf(stderr, L"ERROR: GetModuleFileNameW failed: %lu (ret %lu)\n", GetLastError(), cchModule);
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| 138 | return 13;
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| 139 | }
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| 140 |
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| 141 | /* Strip the extension off the module name and construct the arch specific
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| 142 | one of the real installer program. */
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| 143 | DWORD off = cchModule - 1;
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| 144 | while ( off > 0
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| 145 | && ( wszModule[off] != '/'
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| 146 | && wszModule[off] != '\\'
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| 147 | && wszModule[off] != ':'))
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| 148 | {
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| 149 | if (wszModule[off] == '.')
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| 150 | {
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| 151 | wszModule[off] = '\0';
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| 152 | cchModule = off;
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| 153 | break;
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| 154 | }
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| 155 | off--;
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| 156 | }
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| 157 |
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| 158 | WCHAR const *pwszSuff = IsWow64() ? L"-amd64.exe" : L"-x86.exe";
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| 159 | size_t cchSuff = wcslen(pwszSuff);
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| 160 | if (cchSuff + cchModule >= sizeof(wszModule))
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| 161 | {
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| 162 | fwprintf(stderr, L"ERROR: Real installer name is too long (%u chars)\n", (unsigned)(cchSuff + cchModule));
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| 163 | return 14;
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| 164 | }
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| 165 | wcscpy(&wszModule[cchModule], pwszSuff);
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| 166 | cchModule += cchSuff;
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| 167 |
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| 168 | /* Replace the first argument of the argument list. */
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| 169 | PWCHAR pwszNewCmdLine = NULL;
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| 170 | LPCWSTR pwszOrgCmdLine = GetCommandLineW();
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| 171 | if (pwszOrgCmdLine) /* Dunno if this can be NULL, but whatever. */
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| 172 | {
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| 173 | /* Skip the first argument in the original. */
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| 174 | /** @todo Is there some ISBLANK or ISSPACE macro/function in Win32 that we could
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| 175 | * use here, if it's correct wrt. command line conventions? */
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| 176 | WCHAR wch;
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| 177 | while ((wch = *pwszOrgCmdLine) == L' ' || wch == L'\t')
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| 178 | pwszOrgCmdLine++;
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| 179 | if (wch == L'"')
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| 180 | {
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| 181 | pwszOrgCmdLine++;
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| 182 | while ((wch = *pwszOrgCmdLine) != L'\0')
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| 183 | {
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| 184 | pwszOrgCmdLine++;
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| 185 | if (wch == L'"')
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| 186 | break;
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| 187 | }
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| 188 | }
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| 189 | else
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| 190 | {
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| 191 | while ((wch = *pwszOrgCmdLine) != L'\0')
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| 192 | {
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| 193 | pwszOrgCmdLine++;
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| 194 | if (wch == L' ' || wch == L'\t')
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| 195 | break;
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| 196 | }
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| 197 | }
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| 198 | while ((wch = *pwszOrgCmdLine) == L' ' || wch == L'\t')
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| 199 | pwszOrgCmdLine++;
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| 200 |
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| 201 | /* Join up "szModule" with the remainder of the original command line. */
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| 202 | size_t cchOrgCmdLine = wcslen(pwszOrgCmdLine);
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| 203 | size_t cchNewCmdLine = 1 + cchModule + 1 + 1 + cchOrgCmdLine + 1;
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| 204 | PWCHAR pwsz = pwszNewCmdLine = (PWCHAR)LocalAlloc(LPTR, cchNewCmdLine * sizeof(WCHAR));
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| 205 | if (!pwsz)
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| 206 | {
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| 207 | fwprintf(stderr, L"ERROR: Out of memory (%u bytes)\n", (unsigned)cchNewCmdLine);
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| 208 | return 15;
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| 209 | }
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| 210 | *pwsz++ = L'"';
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| 211 | wcscpy(pwsz, wszModule);
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| 212 | pwsz += cchModule;
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| 213 | *pwsz++ = L'"';
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| 214 | if (cchOrgCmdLine)
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| 215 | {
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| 216 | *pwsz++ = L' ';
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| 217 | wcscpy(pwsz, pwszOrgCmdLine);
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| 218 | }
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| 219 | else
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| 220 | {
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| 221 | *pwsz = L'\0';
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| 222 | pwszOrgCmdLine = NULL;
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| 223 | }
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| 224 | }
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| 225 |
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| 226 | /*
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| 227 | * Start the process.
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| 228 | */
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| 229 | int iRet = 0;
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| 230 | STARTUPINFOW StartupInfo = { sizeof(StartupInfo), 0 };
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| 231 | PROCESS_INFORMATION ProcInfo = { 0 };
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| 232 | SetLastError(740);
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| 233 | BOOL fOk = CreateProcessW(wszModule,
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| 234 | pwszNewCmdLine,
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| 235 | NULL /*pProcessAttributes*/,
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| 236 | NULL /*pThreadAttributes*/,
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| 237 | TRUE /*fInheritHandles*/,
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| 238 | 0 /*dwCreationFlags*/,
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| 239 | NULL /*pEnvironment*/,
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| 240 | NULL /*pCurrentDirectory*/,
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| 241 | &StartupInfo,
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| 242 | &ProcInfo);
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| 243 | if (fOk)
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| 244 | {
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| 245 | /* Wait for the process to finish. */
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| 246 | CloseHandle(ProcInfo.hThread);
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| 247 | WaitForProcess(ProcInfo.hProcess, &iRet);
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| 248 | CloseHandle(ProcInfo.hProcess);
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| 249 | }
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| 250 | else if (GetLastError() == ERROR_ELEVATION_REQUIRED)
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| 251 | {
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| 252 | /*
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| 253 | * Elevation is required. That can be accomplished via ShellExecuteEx
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| 254 | * and the runas atom.
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| 255 | */
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| 256 | MSG Msg;
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| 257 | PeekMessage(&Msg, NULL, 0, 0, PM_NOREMOVE);
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| 258 | CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
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| 259 |
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| 260 | SHELLEXECUTEINFOW ShExecInfo = { 0 };
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| 261 | ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFOW);
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| 262 | ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
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| 263 | ShExecInfo.hwnd = NULL;
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| 264 | ShExecInfo.lpVerb = L"runas" ;
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| 265 | ShExecInfo.lpFile = wszModule;
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| 266 | ShExecInfo.lpParameters = pwszOrgCmdLine; /* pass only args here!!! */
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| 267 | ShExecInfo.lpDirectory = wszCurDir;
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| 268 | ShExecInfo.nShow = SW_NORMAL;
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| 269 | ShExecInfo.hProcess = INVALID_HANDLE_VALUE;
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| 270 | if (ShellExecuteExW(&ShExecInfo))
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| 271 | {
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| 272 | if (ShExecInfo.hProcess != INVALID_HANDLE_VALUE)
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| 273 | {
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| 274 | WaitForProcess2(ShExecInfo.hProcess, &iRet);
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| 275 | CloseHandle(ShExecInfo.hProcess);
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| 276 | }
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| 277 | else
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| 278 | {
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| 279 | fwprintf(stderr, L"ERROR: ShellExecuteExW did not return a valid process handle!\n");
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| 280 | iRet = 1;
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| 281 | }
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| 282 | }
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| 283 | else
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| 284 | {
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| 285 | fwprintf(stderr, L"ERROR: Failed to execute '%ws' via ShellExecuteExW: %lu\n", wszModule, GetLastError());
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| 286 | iRet = 9;
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| 287 | }
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| 288 | }
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| 289 | else
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| 290 | {
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| 291 | fwprintf(stderr, L"ERROR: Failed to execute '%ws' via CreateProcessW: %lu\n", wszModule, GetLastError());
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| 292 | iRet = 8;
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| 293 | }
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| 294 |
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| 295 | if (pwszNewCmdLine)
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| 296 | LocalFree(pwszNewCmdLine);
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| 297 |
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| 298 | #if 0
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| 299 | fwprintf(stderr, L"DEBUG: iRet=%d\n", iRet);
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| 300 | fflush(stderr);
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| 301 | #endif
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| 302 | return iRet;
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| 303 | }
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| 304 |
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