summaryrefslogtreecommitdiffstats
path: root/src/VBox/Main/testcase/tstVBoxAPIWin.cpp
blob: 444fa4d506af898142c493b53fc0a742fae01fa8 (plain)
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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
/* $Id: tstVBoxAPIWin.cpp $ */
/** @file
 *
 * tstVBoxAPIWin - sample program to illustrate the VirtualBox
 *                 COM API for machine management on Windows.
                   It only uses standard C/C++ and COM semantics,
 *                 no additional VBox classes/macros/helpers. To
 *                 make things even easier to follow, only the
 *                 standard Win32 API has been used. Typically,
 *                 C++ developers would make use of Microsoft's
 *                 ATL to ease development.
 */

/*
 * Copyright (C) 2006-2022 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
 */

/*
 * PURPOSE OF THIS SAMPLE PROGRAM
 * ------------------------------
 *
 * This sample program is intended to demonstrate the minimal code necessary
 * to use VirtualBox COM API for learning puroses only. The program uses pure
 * Win32 API and doesn't have any extra dependencies to let you better
 * understand what is going on when a client talks to the VirtualBox core
 * using the COM framework.
 *
 * However, if you want to write a real application, it is highly recommended
 * to use our MS COM XPCOM Glue library and helper C++ classes. This way, you
 * will get at least the following benefits:
 *
 * a) better portability: both the MS COM (used on Windows) and XPCOM (used
 *    everywhere else) VirtualBox client application from the same source code
 *    (including common smart C++ templates for automatic interface pointer
 *    reference counter and string data management);
 * b) simpler XPCOM initialization and shutdown (only a single method call
 *    that does everything right).
 *
 * Currently, there is no separate sample program that uses the VirtualBox MS
 * COM XPCOM Glue library. Please refer to the sources of stock VirtualBox
 * applications such as the VirtualBox GUI frontend or the VBoxManage command
 * line frontend.
 */


#include <stdio.h>
#include <iprt/win/windows.h>  /* Avoid -Wall warnings. */
#include "VirtualBox.h"

#define SAFE_RELEASE(x) \
    if (x) { \
        x->Release(); \
        x = NULL; \
    }

int listVMs(IVirtualBox *virtualBox)
{
    HRESULT rc;

    /*
     * First we have to get a list of all registered VMs
     */
    SAFEARRAY *machinesArray = NULL;

    rc = virtualBox->get_Machines(&machinesArray);
    if (SUCCEEDED(rc))
    {
        IMachine **machines;
        rc = SafeArrayAccessData(machinesArray, (void **) &machines);
        if (SUCCEEDED(rc))
        {
            for (ULONG i = 0; i < machinesArray->rgsabound[0].cElements; ++i)
            {
                BSTR str;

                rc = machines[i]->get_Name(&str);
                if (SUCCEEDED(rc))
                {
                    printf("Name: %S\n", str);
                    SysFreeString(str);
                }
            }

            SafeArrayUnaccessData(machinesArray);
        }

        SafeArrayDestroy(machinesArray);
    }

    return 0;
}


int testErrorInfo(IVirtualBox *virtualBox)
{
    HRESULT rc;

    /* Try to find a machine that doesn't exist */
    IMachine *machine = NULL;
    BSTR machineName = SysAllocString(L"Foobar");

    rc = virtualBox->FindMachine(machineName, &machine);

    if (FAILED(rc))
    {
        IErrorInfo *errorInfo;

        rc = GetErrorInfo(0, &errorInfo);

        if (FAILED(rc))
            printf("Error getting error info! rc=%#lx\n", rc);
        else
        {
            BSTR errorDescription = NULL;

            rc = errorInfo->GetDescription(&errorDescription);

            if (FAILED(rc) || !errorDescription)
                printf("Error getting error description! rc=%#lx\n", rc);
            else
            {
                printf("Successfully retrieved error description: %S\n", errorDescription);

                SysFreeString(errorDescription);
            }

            errorInfo->Release();
        }
    }

    SAFE_RELEASE(machine);
    SysFreeString(machineName);

    return 0;
}


int testStartVM(IVirtualBox *virtualBox)
{
    HRESULT rc;

    /* Try to start a VM called "WinXP SP2". */
    IMachine *machine = NULL;
    BSTR machineName = SysAllocString(L"WinXP SP2");

    rc = virtualBox->FindMachine(machineName, &machine);

    if (FAILED(rc))
    {
        IErrorInfo *errorInfo;

        rc = GetErrorInfo(0, &errorInfo);

        if (FAILED(rc))
            printf("Error getting error info! rc=%#lx\n", rc);
        else
        {
            BSTR errorDescription = NULL;

            rc = errorInfo->GetDescription(&errorDescription);

            if (FAILED(rc) || !errorDescription)
                printf("Error getting error description! rc=%#lx\n", rc);
            else
            {
                printf("Successfully retrieved error description: %S\n", errorDescription);

                SysFreeString(errorDescription);
            }

            SAFE_RELEASE(errorInfo);
        }
    }
    else
    {
        ISession *session = NULL;
        IConsole *console = NULL;
        IProgress *progress = NULL;
        BSTR sessiontype = SysAllocString(L"gui");
        BSTR guid;

        do
        {
            rc = machine->get_Id(&guid); /* Get the GUID of the machine. */
            if (!SUCCEEDED(rc))
            {
                printf("Error retrieving machine ID! rc=%#lx\n", rc);
                break;
            }

            /* Create the session object. */
            rc = CoCreateInstance(CLSID_Session,        /* the VirtualBox base object */
                                  NULL,                 /* no aggregation */
                                  CLSCTX_INPROC_SERVER, /* the object lives in the current process */
                                  IID_ISession,         /* IID of the interface */
                                  (void**)&session);
            if (!SUCCEEDED(rc))
            {
                printf("Error creating Session instance! rc=%#lx\n", rc);
                break;
            }

            /* Start a VM session using the delivered VBox GUI. */
            rc = machine->LaunchVMProcess(session, sessiontype,
                                          NULL, &progress);
            if (!SUCCEEDED(rc))
            {
                printf("Could not open remote session! rc=%#lx\n", rc);
                break;
            }

            /* Wait until VM is running. */
            printf("Starting VM, please wait ...\n");
            rc = progress->WaitForCompletion(-1);

            /* Get console object. */
            session->get_Console(&console);

            /* Bring console window to front. */
            machine->ShowConsoleWindow(0);

            printf("Press enter to power off VM and close the session...\n");
            getchar();

            /* Power down the machine. */
            rc = console->PowerDown(&progress);

            /* Wait until VM is powered down. */
            printf("Powering off VM, please wait ...\n");
            rc = progress->WaitForCompletion(-1);

            /* Close the session. */
            rc = session->UnlockMachine();

        } while (0);

        SAFE_RELEASE(console);
        SAFE_RELEASE(progress);
        SAFE_RELEASE(session);
        SysFreeString(guid);
        SysFreeString(sessiontype);
        SAFE_RELEASE(machine);
    }

    SysFreeString(machineName);

    return 0;
}


int main()
{
    /* Initialize the COM subsystem. */
    CoInitialize(NULL);

    /* Instantiate the VirtualBox root object. */
    IVirtualBoxClient *virtualBoxClient;
    HRESULT rc = CoCreateInstance(CLSID_VirtualBoxClient, /* the VirtualBoxClient object */
                                  NULL,                   /* no aggregation */
                                  CLSCTX_INPROC_SERVER,   /* the object lives in the current process */
                                  IID_IVirtualBoxClient,  /* IID of the interface */
                                  (void**)&virtualBoxClient);
    if (SUCCEEDED(rc))
    {
        IVirtualBox *virtualBox;
        rc = virtualBoxClient->get_VirtualBox(&virtualBox);
        if (SUCCEEDED(rc))
        {
            listVMs(virtualBox);

            testErrorInfo(virtualBox);

            /* Enable the following line to get a VM started. */
            //testStartVM(virtualBox);

            /* Release the VirtualBox object. */
            virtualBox->Release();
            virtualBoxClient->Release();
        }
        else
            printf("Error creating VirtualBox instance! rc=%#lx\n", rc);
    }

    CoUninitialize();
    return 0;
}