1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/* $Id: winlogon.cpp $ */
/** @file
* VirtualBox External Authentication Library - Windows Logon Authentication.
*/
/*
* Copyright (C) 2006-2023 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>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/* If defined, debug messages will be written to the debugger. */
// #define AUTH_DEBUG
#include <iprt/win/windows.h>
#include <VBox/VBoxAuth.h>
#include <iprt/cdefs.h>
#ifdef AUTH_DEBUG
# include <stdio.h>
static void dprintfw(const WCHAR *fmt, ...)
{
va_list va;
va_start(va, fmt);
WCHAR buffer[1024];
_vsnwprintf(buffer, sizeof (buffer), fmt, va);
OutputDebugStringW(buffer);
va_end(va);
}
# define DBGAUTH(a) dprintfw a
#else
# define DBGAUTH(a)
#endif
static WCHAR g_wszEmpty[] = { L"" };
static void freeWideChar(WCHAR *pwszString)
{
if (pwszString && pwszString != &g_wszEmpty[0])
{
size_t cb = (wcslen(pwszString) + 1) * sizeof(WCHAR);
SecureZeroMemory(pwszString, cb);
free(pwszString);
}
}
static WCHAR *utf8ToWideChar(const char *pszString)
{
/*
* Shortcut for empty strings.
*/
if (!pszString || *pszString == 0)
return &g_wszEmpty[0];
/*
* Return NULL on errors.
*/
WCHAR *pwszString = NULL;
/*
* First calc result string length.
*/
const DWORD dwFlags = MB_ERR_INVALID_CHARS;
int cwc = MultiByteToWideChar(CP_UTF8, dwFlags, pszString, -1, NULL, 0);
if (cwc > 0)
{
/*
* Alloc space for result buffer.
*/
pwszString = (WCHAR *)malloc(cwc * sizeof(WCHAR));
if (pwszString)
{
/*
* Do the translation.
*/
if (MultiByteToWideChar(CP_UTF8, dwFlags, pszString, -1, pwszString, cwc) <= 0)
{
/* translation error */
free(pwszString);
pwszString = NULL;
}
}
}
return pwszString;
}
/* Prototype it to make sure we've got the right prototype. */
#if defined(_MSC_VER)
extern "C" __declspec(dllexport) FNAUTHENTRY3 AuthEntry;
#else
extern "C" FNAUTHENTRY3 AuthEntry;
#endif
/**
* @callback_method_impl{FNAUTHENTRY3}
*/
extern "C" DECLEXPORT(AuthResult) AUTHCALL
AuthEntry(const char *pszCaller,
PAUTHUUID pUuid,
AuthGuestJudgement guestJudgement,
const char *pszUser,
const char *pszPassword,
const char *pszDomain,
int fLogon,
unsigned clientId)
{
RT_NOREF4(pszCaller, pUuid, guestJudgement, clientId);
if (!fLogon)
{
/* Nothing to cleanup. The return code does not matter. */
return AuthResultAccessDenied;
}
LPWSTR pwszUsername = utf8ToWideChar(pszUser);
LPWSTR pwszDomain = utf8ToWideChar(pszDomain);
LPWSTR pwszPassword = utf8ToWideChar(pszPassword);
DBGAUTH((L"u[%ls], d[%ls], p[%ls]\n", lpwszUsername, lpwszDomain, lpwszPassword));
AuthResult result = AuthResultAccessDenied;
if (pwszUsername && pwszDomain && pwszPassword)
{
/* LOGON32_LOGON_INTERACTIVE is intended for users who will be interactively using the computer,
* such as a user being logged on by a terminal server, remote shell, or similar process.
*/
DWORD dwLogonType = LOGON32_LOGON_INTERACTIVE;
DWORD dwLogonProvider = LOGON32_PROVIDER_DEFAULT;
HANDLE hToken;
BOOL fSuccess = LogonUserW(pwszUsername,
pwszDomain,
pwszPassword,
dwLogonType,
dwLogonProvider,
&hToken);
if (fSuccess)
{
DBGAUTH((L"LogonUser success. hToken = %p\n", hToken));
result = AuthResultAccessGranted;
CloseHandle(hToken);
}
else
{
DBGAUTH((L"LogonUser failed %08X\n", GetLastError()));
}
}
freeWideChar(pwszUsername);
freeWideChar(pwszDomain);
freeWideChar(pwszPassword);
return result;
}
|
