[mirror_qemu.git] / qga / vss-win32 / install.cpp

/*
 * QEMU Guest Agent win32 VSS Provider installer
 *
 * Copyright Hitachi Data Systems Corp. 2013
 *
 * Authors:
 *  Tomoki Sekiyama   <tomoki.sekiyama@hds.com>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#include "qemu/osdep.h"

#include "vss-common.h"
#include <inc/win2003/vscoordint.h>
#include "install.h"
#include <wbemidl.h>
#include <comdef.h>
#include <comutil.h>
#include <sddl.h>
#include <winsvc.h>

#define BUFFER_SIZE 1024

extern HINSTANCE g_hinstDll;

const GUID CLSID_COMAdminCatalog = { 0xF618C514, 0xDFB8, 0x11d1,
    {0xA2, 0xCF, 0x00, 0x80, 0x5F, 0xC7, 0x92, 0x35} };
const GUID IID_ICOMAdminCatalog2 = { 0x790C6E0B, 0x9194, 0x4cc9,
    {0x94, 0x26, 0xA4, 0x8A, 0x63, 0x18, 0x56, 0x96} };
const GUID CLSID_WbemLocator = { 0x4590f811, 0x1d3a, 0x11d0,
    {0x89, 0x1f, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} };
const GUID IID_IWbemLocator = { 0xdc12a687, 0x737f, 0x11cf,
    {0x88, 0x4d, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} };

void errmsg(DWORD err, const char *text)
{
    /*
     * `text' contains function call statement when errmsg is called via chk().
     * To make error message more readable, we cut off the text after '('.
     * If text doesn't contains '(', negative precision is given, which is
     * treated as though it were missing.
     */
    char *msg = NULL, *nul = strchr(text, '(');
    int len = nul ? nul - text : -1;

    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
                  FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
                  NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                  (char *)&msg, 0, NULL);
    fprintf(stderr, "%.*s. (Error: %lx) %s\n", len, text, err, msg);
    LocalFree(msg);
}

static void errmsg_dialog(DWORD err, const char *text, const char *opt = "")
{
    char *msg, buf[512];

    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
                  FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
                  NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                  (char *)&msg, 0, NULL);
    snprintf(buf, sizeof(buf), "%s%s. (Error: %lx) %s", text, opt, err, msg);
    MessageBox(NULL, buf, "Error from " QGA_PROVIDER_NAME, MB_OK|MB_ICONERROR);
    LocalFree(msg);
}

#define _chk(hr, status, msg, err_label)        \
    do {                                        \
        hr = (status);                          \
        if (FAILED(hr)) {                       \
            errmsg(hr, msg);                    \
            goto err_label;                     \
        }                                       \
    } while (0)

#define chk(status) _chk(hr, status, "Failed to " #status, out)

#if !defined(__MINGW64_VERSION_MAJOR) || !defined(__MINGW64_VERSION_MINOR) || \
    __MINGW64_VERSION_MAJOR * 100 + __MINGW64_VERSION_MINOR < 301
void __stdcall _com_issue_error(HRESULT hr)
{
    errmsg(hr, "Unexpected error in COM");
}
#endif

template<class T>
HRESULT put_Value(ICatalogObject *pObj, LPCWSTR name, T val)
{
    return pObj->put_Value(_bstr_t(name), _variant_t(val));
}

/* Lookup Administrators group name from winmgmt */
static HRESULT GetAdminName(_bstr_t *name)
{
    HRESULT hr;
    COMPointer<IWbemLocator> pLoc;
    COMPointer<IWbemServices> pSvc;
    COMPointer<IEnumWbemClassObject> pEnum;
    COMPointer<IWbemClassObject> pWobj;
    ULONG returned;
    _variant_t var;

    chk(CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER,
                         IID_IWbemLocator, (LPVOID *)pLoc.replace()));
    chk(pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, NULL,
                            0, 0, 0, pSvc.replace()));
    chk(CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE,
                          NULL, RPC_C_AUTHN_LEVEL_CALL,
                          RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE));
    chk(pSvc->ExecQuery(_bstr_t(L"WQL"),
                        _bstr_t(L"select * from Win32_Account where "
                                "SID='S-1-5-32-544' and localAccount=TRUE"),
                        WBEM_FLAG_RETURN_IMMEDIATELY | WBEM_FLAG_FORWARD_ONLY,
                        NULL, pEnum.replace()));
    if (!pEnum) {
        hr = E_FAIL;
        errmsg(hr, "Failed to query for Administrators");
        goto out;
    }
    chk(pEnum->Next(WBEM_INFINITE, 1, pWobj.replace(), &returned));
    if (returned == 0) {
        hr = E_FAIL;
        errmsg(hr, "No Administrators found");
        goto out;
    }

    chk(pWobj->Get(_bstr_t(L"Name"), 0, &var, 0, 0));
    try {
        *name = var;
    } catch(...) {
        hr = E_FAIL;
        errmsg(hr, "Failed to get name of Administrators");
        goto out;
    }

out:
    return hr;
}

/* Acquire group or user name by SID */
static HRESULT getNameByStringSID(
    const wchar_t *sid, LPWSTR buffer, LPDWORD bufferLen)
{
    HRESULT hr = S_OK;
    PSID psid = NULL;
    SID_NAME_USE groupType;
    DWORD domainNameLen = BUFFER_SIZE;
    wchar_t domainName[BUFFER_SIZE];

    if (!ConvertStringSidToSidW(sid, &psid)) {
        hr = HRESULT_FROM_WIN32(GetLastError());
        goto out;
    }
    if (!LookupAccountSidW(NULL, psid, buffer, bufferLen,
                           domainName, &domainNameLen, &groupType)) {
        hr = HRESULT_FROM_WIN32(GetLastError());
        /* Fall through and free psid */
    }

    LocalFree(psid);

out:
    return hr;
}

/* Find and iterate QGA VSS provider in COM+ Application Catalog */
static HRESULT QGAProviderFind(
    HRESULT (*found)(ICatalogCollection *, int, void *), void *arg)
{
    HRESULT hr;
    COMInitializer initializer;
    COMPointer<IUnknown> pUnknown;
    COMPointer<ICOMAdminCatalog2> pCatalog;
    COMPointer<ICatalogCollection> pColl;
    COMPointer<ICatalogObject> pObj;
    _variant_t var;
    long i, n;

    chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER,
                         IID_IUnknown, (void **)pUnknown.replace()));
    chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2,
                                 (void **)pCatalog.replace()));
    chk(pCatalog->GetCollection(_bstr_t(L"Applications"),
                                (IDispatch **)pColl.replace()));
    chk(pColl->Populate());

    chk(pColl->get_Count(&n));
    for (i = n - 1; i >= 0; i--) {
        chk(pColl->get_Item(i, (IDispatch **)pObj.replace()));
        chk(pObj->get_Value(_bstr_t(L"Name"), &var));
        if (var == _variant_t(QGA_PROVIDER_LNAME)) {
            if (FAILED(found(pColl, i, arg))) {
                goto out;
            }
        }
    }
    chk(pColl->SaveChanges(&n));

out:
    return hr;
}

/* Count QGA VSS provider in COM+ Application Catalog */
static HRESULT QGAProviderCount(ICatalogCollection *coll, int i, void *arg)
{
    (*(int *)arg)++;
    return S_OK;
}

/* Remove QGA VSS provider from COM+ Application Catalog Collection */
static HRESULT QGAProviderRemove(ICatalogCollection *coll, int i, void *arg)
{
    HRESULT hr;

    fprintf(stderr, "Removing COM+ Application: %s\n", QGA_PROVIDER_NAME);
    chk(coll->Remove(i));
out:
    return hr;
}

/* Unregister this module from COM+ Applications Catalog */
STDAPI COMUnregister(void)
{
    HRESULT hr;

    DllUnregisterServer();
    chk(QGAProviderFind(QGAProviderRemove, NULL));
out:
    return hr;
}

/* Register this module to COM+ Applications Catalog */
STDAPI COMRegister(void)
{
    HRESULT hr;
    COMInitializer initializer;
    COMPointer<IUnknown> pUnknown;
    COMPointer<ICOMAdminCatalog2> pCatalog;
    COMPointer<ICatalogCollection> pApps, pRoles, pUsersInRole;
    COMPointer<ICatalogObject> pObj;
    long n;
    _bstr_t name;
    _variant_t key;
    CHAR dllPath[MAX_PATH], tlbPath[MAX_PATH];
    bool unregisterOnFailure = false;
    int count = 0;
    DWORD bufferLen = BUFFER_SIZE;
    wchar_t buffer[BUFFER_SIZE];
    const wchar_t *administratorsGroupSID = L"S-1-5-32-544";
    const wchar_t *systemUserSID = L"S-1-5-18";

    if (!g_hinstDll) {
        errmsg(E_FAIL, "Failed to initialize DLL");
        return E_FAIL;
    }

    chk(QGAProviderFind(QGAProviderCount, (void *)&count));
    if (count) {
        errmsg(E_ABORT, "QGA VSS Provider is already installed");
        return E_ABORT;
    }

    chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER,
                         IID_IUnknown, (void **)pUnknown.replace()));
    chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2,
                                 (void **)pCatalog.replace()));

    /* Install COM+ Component */

    chk(pCatalog->GetCollection(_bstr_t(L"Applications"),
                                (IDispatch **)pApps.replace()));
    chk(pApps->Populate());
    chk(pApps->Add((IDispatch **)&pObj));
    chk(put_Value(pObj, L"Name",        QGA_PROVIDER_LNAME));
    chk(put_Value(pObj, L"Description", QGA_PROVIDER_LNAME));
    chk(put_Value(pObj, L"ApplicationAccessChecksEnabled", true));
    chk(put_Value(pObj, L"Authentication",                 short(6)));
    chk(put_Value(pObj, L"AuthenticationCapability",       short(2)));
    chk(put_Value(pObj, L"ImpersonationLevel",             short(2)));
    chk(pApps->SaveChanges(&n));

    /* The app should be deleted if something fails after SaveChanges */
    unregisterOnFailure = true;

    chk(pObj->get_Key(&key));

    if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) {
        hr = HRESULT_FROM_WIN32(GetLastError());
        errmsg(hr, "GetModuleFileName failed");
        goto out;
    }
    n = strlen(dllPath);
    if (n < 3) {
        hr = E_FAIL;
        errmsg(hr, "Failed to lookup dll");
        goto out;
    }
    strcpy(tlbPath, dllPath);
    strcpy(tlbPath+n-3, "tlb");
    fprintf(stderr, "Registering " QGA_PROVIDER_NAME ":\n");
    fprintf(stderr, "  %s\n", dllPath);
    fprintf(stderr, "  %s\n", tlbPath);
    if (!PathFileExists(tlbPath)) {
        hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
        errmsg(hr, "Failed to lookup tlb");
        goto out;
    }

    chk(pCatalog->CreateServiceForApplication(
            _bstr_t(QGA_PROVIDER_LNAME), _bstr_t(QGA_PROVIDER_LNAME),
            _bstr_t(L"SERVICE_DEMAND_START"), _bstr_t(L"SERVICE_ERROR_NORMAL"),
            _bstr_t(L""), _bstr_t(L".\\localsystem"), _bstr_t(L""), FALSE));
    chk(pCatalog->InstallComponent(_bstr_t(QGA_PROVIDER_LNAME),
                                   _bstr_t(dllPath), _bstr_t(tlbPath),
                                   _bstr_t("")));

    /* Setup roles of the applicaion */

    chk(getNameByStringSID(administratorsGroupSID, buffer, &bufferLen));
    chk(pApps->GetCollection(_bstr_t(L"Roles"), key,
                             (IDispatch **)pRoles.replace()));
    chk(pRoles->Populate());
    chk(pRoles->Add((IDispatch **)pObj.replace()));
    chk(put_Value(pObj, L"Name", buffer));
    chk(put_Value(pObj, L"Description", L"Administrators group"));
    chk(pRoles->SaveChanges(&n));
    chk(pObj->get_Key(&key));

    /* Setup users in the role */

    chk(pRoles->GetCollection(_bstr_t(L"UsersInRole"), key,
                              (IDispatch **)pUsersInRole.replace()));
    chk(pUsersInRole->Populate());

    chk(pUsersInRole->Add((IDispatch **)pObj.replace()));
    chk(GetAdminName(&name));
    chk(put_Value(pObj, L"User", _bstr_t(".\\") + name));

    bufferLen = BUFFER_SIZE;
    chk(getNameByStringSID(systemUserSID, buffer, &bufferLen));
    chk(pUsersInRole->Add((IDispatch **)pObj.replace()));
    chk(put_Value(pObj, L"User", buffer));
    chk(pUsersInRole->SaveChanges(&n));

out:
    if (unregisterOnFailure && FAILED(hr)) {
        COMUnregister();
    }

    return hr;
}


static BOOL CreateRegistryKey(LPCTSTR key, LPCTSTR value, LPCTSTR data)
{
    HKEY  hKey;
    LONG  ret;
    DWORD size;

    ret = RegCreateKeyEx(HKEY_CLASSES_ROOT, key, 0, NULL,
        REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL);
    if (ret != ERROR_SUCCESS) {
        goto out;
    }

    if (data != NULL) {
        size = strlen(data) + 1;
    } else {
        size = 0;
    }

    ret = RegSetValueEx(hKey, value, 0, REG_SZ, (LPBYTE)data, size);
    RegCloseKey(hKey);

out:
    if (ret != ERROR_SUCCESS) {
        /* As we cannot printf within DllRegisterServer(), show a dialog. */
        errmsg_dialog(ret, "Cannot add registry", key);
        return FALSE;
    }
    return TRUE;
}

/* Register this dll as a VSS provider */
STDAPI DllRegisterServer(void)
{
    COMInitializer initializer;
    COMPointer<IVssAdmin> pVssAdmin;
    HRESULT hr = E_FAIL;
    char dllPath[MAX_PATH];
    char key[256];

    if (!g_hinstDll) {
        errmsg_dialog(hr, "Module instance is not available");
        goto out;
    }

    /* Add this module to registery */

    sprintf(key, "CLSID\\%s", g_szClsid);
    if (!CreateRegistryKey(key, NULL, g_szClsid)) {
        goto out;
    }

    if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) {
        errmsg_dialog(GetLastError(), "GetModuleFileName failed");
        goto out;
    }

    sprintf(key, "CLSID\\%s\\InprocServer32", g_szClsid);
    if (!CreateRegistryKey(key, NULL, dllPath)) {
        goto out;
    }

    if (!CreateRegistryKey(key, "ThreadingModel", "Apartment")) {
        goto out;
    }

    sprintf(key, "CLSID\\%s\\ProgID", g_szClsid);
    if (!CreateRegistryKey(key, NULL, g_szProgid)) {
        goto out;
    }

    if (!CreateRegistryKey(g_szProgid, NULL, QGA_PROVIDER_NAME)) {
        goto out;
    }

    sprintf(key, "%s\\CLSID", g_szProgid);
    if (!CreateRegistryKey(key, NULL, g_szClsid)) {
        goto out;
    }

    hr = CoCreateInstance(CLSID_VSSCoordinator, NULL, CLSCTX_ALL,
                          IID_IVssAdmin, (void **)pVssAdmin.replace());
    if (FAILED(hr)) {
        errmsg_dialog(hr, "CoCreateInstance(VSSCoordinator) failed");
        goto out;
    }

    hr = pVssAdmin->RegisterProvider(g_gProviderId, CLSID_QGAVSSProvider,
                                     const_cast<WCHAR*>(QGA_PROVIDER_LNAME),
                                     VSS_PROV_SOFTWARE,
                                     const_cast<WCHAR*>(QGA_PROVIDER_VERSION),
                                     g_gProviderVersion);
    if (hr == (long int) VSS_E_PROVIDER_ALREADY_REGISTERED) {
        DllUnregisterServer();
        hr = pVssAdmin->RegisterProvider(g_gProviderId, CLSID_QGAVSSProvider,
                                         const_cast<WCHAR * >
                                         (QGA_PROVIDER_LNAME),
                                         VSS_PROV_SOFTWARE,
                                         const_cast<WCHAR * >
                                         (QGA_PROVIDER_VERSION),
                                         g_gProviderVersion);
    }

    if (FAILED(hr)) {
        errmsg_dialog(hr, "RegisterProvider failed");
    }

out:
    if (FAILED(hr)) {
        DllUnregisterServer();
    }

    return hr;
}

/* Unregister this VSS hardware provider from the system */
STDAPI DllUnregisterServer(void)
{
    TCHAR key[256];
    COMInitializer initializer;
    COMPointer<IVssAdmin> pVssAdmin;

    HRESULT hr = CoCreateInstance(CLSID_VSSCoordinator,
                                  NULL, CLSCTX_ALL, IID_IVssAdmin,
                                  (void **)pVssAdmin.replace());
    if (SUCCEEDED(hr)) {
        hr = pVssAdmin->UnregisterProvider(g_gProviderId);
    } else {
        errmsg(hr, "CoCreateInstance(VSSCoordinator) failed");
    }

    sprintf(key, "CLSID\\%s", g_szClsid);
    SHDeleteKey(HKEY_CLASSES_ROOT, key);
    SHDeleteKey(HKEY_CLASSES_ROOT, g_szProgid);

    return S_OK; /* Uninstall should never fail */
}


/* Support function to convert ASCII string into BSTR (used in _bstr_t) */
namespace _com_util
{
    BSTR WINAPI ConvertStringToBSTR(const char *ascii) {
        int len = strlen(ascii);
        BSTR bstr = SysAllocStringLen(NULL, len);

        if (!bstr) {
            return NULL;
        }

        if (mbstowcs(bstr, ascii, len) == (size_t)-1) {
            fprintf(stderr, "Failed to convert string '%s' into BSTR", ascii);
            bstr[0] = 0;
        }
        return bstr;
    }
}

/* Stop QGA VSS provider service using Winsvc API  */
STDAPI StopService(void)
{
    HRESULT hr;
    SC_HANDLE manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
    SC_HANDLE service = NULL;

    if (!manager) {
        errmsg(E_FAIL, "Failed to open service manager");
        hr = E_FAIL;
        goto out;
    }
    service = OpenService(manager, QGA_PROVIDER_NAME, SC_MANAGER_ALL_ACCESS);

    if (!service) {
        errmsg(E_FAIL, "Failed to open service");
        hr =  E_FAIL;
        goto out;
    }
    if (!(ControlService(service, SERVICE_CONTROL_STOP, NULL))) {
        errmsg(E_FAIL, "Failed to stop service");
        hr = E_FAIL;
    }

out:
    CloseServiceHandle(service);
    CloseServiceHandle(manager);
    return hr;
}
Commit	Line	Data
b39297ae TS	1	/*
	2	* QEMU Guest Agent win32 VSS Provider installer
	3	*
	4	* Copyright Hitachi Data Systems Corp. 2013
	5	*
	6	* Authors:
	7	* Tomoki Sekiyama <tomoki.sekiyama@hds.com>
	8	*
	9	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	10	* See the COPYING file in the top-level directory.
	11	*/
	12
e55eb806	13	#include "qemu/osdep.h"
b39297ae TS	14
b39297ae TS	15	#include "vss-common.h"
a9c94277	16	#include <inc/win2003/vscoordint.h>
f342cc93	17	#include "install.h"
b39297ae TS	18	#include <wbemidl.h>
	19	#include <comdef.h>
	20	#include <comutil.h>
009f38d9	21	#include <sddl.h>
917ebcb1	22	#include <winsvc.h>
009f38d9 DR	23
009f38d9 DR	24	#define BUFFER_SIZE 1024
b39297ae TS	25
	26	extern HINSTANCE g_hinstDll;
	27
	28	const GUID CLSID_COMAdminCatalog = { 0xF618C514, 0xDFB8, 0x11d1,
	29	{0xA2, 0xCF, 0x00, 0x80, 0x5F, 0xC7, 0x92, 0x35} };
bca4bf10 TS	30	const GUID IID_ICOMAdminCatalog2 = { 0x790C6E0B, 0x9194, 0x4cc9,
bca4bf10 TS	31	{0x94, 0x26, 0xA4, 0x8A, 0x63, 0x18, 0x56, 0x96} };
b39297ae TS	32	const GUID CLSID_WbemLocator = { 0x4590f811, 0x1d3a, 0x11d0,
	33	{0x89, 0x1f, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} };
	34	const GUID IID_IWbemLocator = { 0xdc12a687, 0x737f, 0x11cf,
	35	{0x88, 0x4d, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} };
	36
	37	void errmsg(DWORD err, const char *text)
	38	{
	39	/*
	40	* `text' contains function call statement when errmsg is called via chk().
	41	* To make error message more readable, we cut off the text after '('.
	42	* If text doesn't contains '(', negative precision is given, which is
	43	* treated as though it were missing.
	44	*/
	45	char msg = NULL, nul = strchr(text, '(');
	46	int len = nul ? nul - text : -1;
	47
	48	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER \|
	49	FORMAT_MESSAGE_FROM_SYSTEM \| FORMAT_MESSAGE_IGNORE_INSERTS,
	50	NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
	51	(char *)&msg, 0, NULL);
	52	fprintf(stderr, "%.*s. (Error: %lx) %s\n", len, text, err, msg);
	53	LocalFree(msg);
	54	}
	55
	56	static void errmsg_dialog(DWORD err, const char text, const char opt = "")
	57	{
	58	char *msg, buf[512];
	59
	60	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER \|
	61	FORMAT_MESSAGE_FROM_SYSTEM \| FORMAT_MESSAGE_IGNORE_INSERTS,
	62	NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
	63	(char *)&msg, 0, NULL);
	64	snprintf(buf, sizeof(buf), "%s%s. (Error: %lx) %s", text, opt, err, msg);
	65	MessageBox(NULL, buf, "Error from " QGA_PROVIDER_NAME, MB_OK\|MB_ICONERROR);
	66	LocalFree(msg);
	67	}
	68
	69	#define _chk(hr, status, msg, err_label) \
	70	do { \
	71	hr = (status); \
	72	if (FAILED(hr)) { \
	73	errmsg(hr, msg); \
	74	goto err_label; \
	75	} \
	76	} while (0)
	77
	78	#define chk(status) _chk(hr, status, "Failed to " #status, out)
	79
9854202b TS	80	#if !defined(__MINGW64_VERSION_MAJOR) \|\| !defined(__MINGW64_VERSION_MINOR) \|\| \
9854202b TS	81	__MINGW64_VERSION_MAJOR * 100 + __MINGW64_VERSION_MINOR < 301
b39297ae TS	82	void __stdcall _com_issue_error(HRESULT hr)
	83	{
	84	errmsg(hr, "Unexpected error in COM");
	85	}
9854202b	86	#endif
b39297ae TS	87
	88	template<class T>
	89	HRESULT put_Value(ICatalogObject *pObj, LPCWSTR name, T val)
	90	{
	91	return pObj->put_Value(_bstr_t(name), _variant_t(val));
	92	}
	93
	94	/* Lookup Administrators group name from winmgmt */
	95	static HRESULT GetAdminName(_bstr_t *name)
	96	{
	97	HRESULT hr;
	98	COMPointer<IWbemLocator> pLoc;
	99	COMPointer<IWbemServices> pSvc;
	100	COMPointer<IEnumWbemClassObject> pEnum;
	101	COMPointer<IWbemClassObject> pWobj;
	102	ULONG returned;
	103	_variant_t var;
	104
	105	chk(CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER,
	106	IID_IWbemLocator, (LPVOID *)pLoc.replace()));
	107	chk(pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, NULL,
	108	0, 0, 0, pSvc.replace()));
	109	chk(CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE,
	110	NULL, RPC_C_AUTHN_LEVEL_CALL,
	111	RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE));
	112	chk(pSvc->ExecQuery(_bstr_t(L"WQL"),
	113	_bstr_t(L"select * from Win32_Account where "
	114	"SID='S-1-5-32-544' and localAccount=TRUE"),
	115	WBEM_FLAG_RETURN_IMMEDIATELY \| WBEM_FLAG_FORWARD_ONLY,
	116	NULL, pEnum.replace()));
	117	if (!pEnum) {
	118	hr = E_FAIL;
	119	errmsg(hr, "Failed to query for Administrators");
	120	goto out;
	121	}
	122	chk(pEnum->Next(WBEM_INFINITE, 1, pWobj.replace(), &returned));
	123	if (returned == 0) {
	124	hr = E_FAIL;
	125	errmsg(hr, "No Administrators found");
	126	goto out;
	127	}
	128
	129	chk(pWobj->Get(_bstr_t(L"Name"), 0, &var, 0, 0));
	130	try {
	131	*name = var;
	132	} catch(...) {
	133	hr = E_FAIL;
	134	errmsg(hr, "Failed to get name of Administrators");
	135	goto out;
	136	}
	137
	138	out:
	139	return hr;
	140	}
	141
009f38d9 DR	142	/* Acquire group or user name by SID */
	143	static HRESULT getNameByStringSID(
	144	const wchar_t *sid, LPWSTR buffer, LPDWORD bufferLen)
	145	{
	146	HRESULT hr = S_OK;
	147	PSID psid = NULL;
	148	SID_NAME_USE groupType;
	149	DWORD domainNameLen = BUFFER_SIZE;
	150	wchar_t domainName[BUFFER_SIZE];
	151
8cedc805 MR	152	if (!ConvertStringSidToSidW(sid, &psid)) {
	153	hr = HRESULT_FROM_WIN32(GetLastError());
	154	goto out;
	155	}
	156	if (!LookupAccountSidW(NULL, psid, buffer, bufferLen,
	157	domainName, &domainNameLen, &groupType)) {
	158	hr = HRESULT_FROM_WIN32(GetLastError());
	159	/* Fall through and free psid */
	160	}
009f38d9 DR	161
	162	LocalFree(psid);
	163
	164	out:
	165	return hr;
	166	}
	167
b39297ae TS	168	/* Find and iterate QGA VSS provider in COM+ Application Catalog */
	169	static HRESULT QGAProviderFind(
	170	HRESULT (found)(ICatalogCollection , int, void ), void arg)
	171	{
	172	HRESULT hr;
	173	COMInitializer initializer;
	174	COMPointer<IUnknown> pUnknown;
bca4bf10	175	COMPointer<ICOMAdminCatalog2> pCatalog;
b39297ae TS	176	COMPointer<ICatalogCollection> pColl;
	177	COMPointer<ICatalogObject> pObj;
	178	_variant_t var;
	179	long i, n;
	180
	181	chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER,
	182	IID_IUnknown, (void **)pUnknown.replace()));
bca4bf10	183	chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2,
b39297ae TS	184	(void **)pCatalog.replace()));
	185	chk(pCatalog->GetCollection(_bstr_t(L"Applications"),
	186	(IDispatch **)pColl.replace()));
	187	chk(pColl->Populate());
	188
	189	chk(pColl->get_Count(&n));
	190	for (i = n - 1; i >= 0; i--) {
	191	chk(pColl->get_Item(i, (IDispatch **)pObj.replace()));
	192	chk(pObj->get_Value(_bstr_t(L"Name"), &var));
	193	if (var == _variant_t(QGA_PROVIDER_LNAME)) {
	194	if (FAILED(found(pColl, i, arg))) {
	195	goto out;
	196	}
	197	}
	198	}
	199	chk(pColl->SaveChanges(&n));
	200
	201	out:
	202	return hr;
	203	}
	204
	205	/* Count QGA VSS provider in COM+ Application Catalog */
	206	static HRESULT QGAProviderCount(ICatalogCollection coll, int i, void arg)
	207	{
	208	((int )arg)++;
	209	return S_OK;
	210	}
	211
	212	/* Remove QGA VSS provider from COM+ Application Catalog Collection */
	213	static HRESULT QGAProviderRemove(ICatalogCollection coll, int i, void arg)
	214	{
	215	HRESULT hr;
	216
	217	fprintf(stderr, "Removing COM+ Application: %s\n", QGA_PROVIDER_NAME);
	218	chk(coll->Remove(i));
	219	out:
	220	return hr;
	221	}
	222
	223	/* Unregister this module from COM+ Applications Catalog */
	224	STDAPI COMUnregister(void)
	225	{
	226	HRESULT hr;
	227
	228	DllUnregisterServer();
	229	chk(QGAProviderFind(QGAProviderRemove, NULL));
	230	out:
	231	return hr;
	232	}
	233
	234	/* Register this module to COM+ Applications Catalog */
	235	STDAPI COMRegister(void)
	236	{
	237	HRESULT hr;
	238	COMInitializer initializer;
	239	COMPointer<IUnknown> pUnknown;
bca4bf10	240	COMPointer<ICOMAdminCatalog2> pCatalog;
b39297ae TS	241	COMPointer<ICatalogCollection> pApps, pRoles, pUsersInRole;
	242	COMPointer<ICatalogObject> pObj;
	243	long n;
	244	_bstr_t name;
	245	_variant_t key;
	246	CHAR dllPath[MAX_PATH], tlbPath[MAX_PATH];
	247	bool unregisterOnFailure = false;
	248	int count = 0;
009f38d9 DR	249	DWORD bufferLen = BUFFER_SIZE;
	250	wchar_t buffer[BUFFER_SIZE];
	251	const wchar_t *administratorsGroupSID = L"S-1-5-32-544";
	252	const wchar_t *systemUserSID = L"S-1-5-18";
b39297ae TS	253
	254	if (!g_hinstDll) {
	255	errmsg(E_FAIL, "Failed to initialize DLL");
	256	return E_FAIL;
	257	}
	258
	259	chk(QGAProviderFind(QGAProviderCount, (void *)&count));
	260	if (count) {
	261	errmsg(E_ABORT, "QGA VSS Provider is already installed");
	262	return E_ABORT;
	263	}
	264
	265	chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER,
	266	IID_IUnknown, (void **)pUnknown.replace()));
bca4bf10	267	chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2,
b39297ae TS	268	(void **)pCatalog.replace()));
	269
	270	/* Install COM+ Component */
	271
	272	chk(pCatalog->GetCollection(_bstr_t(L"Applications"),
	273	(IDispatch **)pApps.replace()));
	274	chk(pApps->Populate());
	275	chk(pApps->Add((IDispatch **)&pObj));
	276	chk(put_Value(pObj, L"Name", QGA_PROVIDER_LNAME));
	277	chk(put_Value(pObj, L"Description", QGA_PROVIDER_LNAME));
	278	chk(put_Value(pObj, L"ApplicationAccessChecksEnabled", true));
	279	chk(put_Value(pObj, L"Authentication", short(6)));
	280	chk(put_Value(pObj, L"AuthenticationCapability", short(2)));
	281	chk(put_Value(pObj, L"ImpersonationLevel", short(2)));
	282	chk(pApps->SaveChanges(&n));
	283
	284	/* The app should be deleted if something fails after SaveChanges */
	285	unregisterOnFailure = true;
	286
	287	chk(pObj->get_Key(&key));
	288
	289	if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) {
	290	hr = HRESULT_FROM_WIN32(GetLastError());
	291	errmsg(hr, "GetModuleFileName failed");
	292	goto out;
	293	}
	294	n = strlen(dllPath);
	295	if (n < 3) {
	296	hr = E_FAIL;
	297	errmsg(hr, "Failed to lookup dll");
	298	goto out;
	299	}
	300	strcpy(tlbPath, dllPath);
	301	strcpy(tlbPath+n-3, "tlb");
	302	fprintf(stderr, "Registering " QGA_PROVIDER_NAME ":\n");
	303	fprintf(stderr, " %s\n", dllPath);
	304	fprintf(stderr, " %s\n", tlbPath);
	305	if (!PathFileExists(tlbPath)) {
	306	hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
	307	errmsg(hr, "Failed to lookup tlb");
	308	goto out;
	309	}
	310
bca4bf10 TS	311	chk(pCatalog->CreateServiceForApplication(
bca4bf10 TS	312	_bstr_t(QGA_PROVIDER_LNAME), _bstr_t(QGA_PROVIDER_LNAME),
f342cc93	313	_bstr_t(L"SERVICE_DEMAND_START"), _bstr_t(L"SERVICE_ERROR_NORMAL"),
bca4bf10	314	_bstr_t(L""), _bstr_t(L".\\localsystem"), _bstr_t(L""), FALSE));
b39297ae TS	315	chk(pCatalog->InstallComponent(_bstr_t(QGA_PROVIDER_LNAME),
	316	_bstr_t(dllPath), _bstr_t(tlbPath),
	317	_bstr_t("")));
	318
	319	/* Setup roles of the applicaion */
	320
009f38d9	321	chk(getNameByStringSID(administratorsGroupSID, buffer, &bufferLen));
b39297ae TS	322	chk(pApps->GetCollection(_bstr_t(L"Roles"), key,
	323	(IDispatch **)pRoles.replace()));
	324	chk(pRoles->Populate());
	325	chk(pRoles->Add((IDispatch **)pObj.replace()));
009f38d9	326	chk(put_Value(pObj, L"Name", buffer));
b39297ae TS	327	chk(put_Value(pObj, L"Description", L"Administrators group"));
	328	chk(pRoles->SaveChanges(&n));
	329	chk(pObj->get_Key(&key));
	330
	331	/* Setup users in the role */
	332
	333	chk(pRoles->GetCollection(_bstr_t(L"UsersInRole"), key,
	334	(IDispatch **)pUsersInRole.replace()));
	335	chk(pUsersInRole->Populate());
	336
	337	chk(pUsersInRole->Add((IDispatch **)pObj.replace()));
	338	chk(GetAdminName(&name));
	339	chk(put_Value(pObj, L"User", _bstr_t(".\\") + name));
	340
009f38d9 DR	341	bufferLen = BUFFER_SIZE;
009f38d9 DR	342	chk(getNameByStringSID(systemUserSID, buffer, &bufferLen));
b39297ae	343	chk(pUsersInRole->Add((IDispatch **)pObj.replace()));
009f38d9	344	chk(put_Value(pObj, L"User", buffer));
b39297ae TS	345	chk(pUsersInRole->SaveChanges(&n));
	346
	347	out:
	348	if (unregisterOnFailure && FAILED(hr)) {
	349	COMUnregister();
	350	}
	351
	352	return hr;
	353	}
	354
	355
	356	static BOOL CreateRegistryKey(LPCTSTR key, LPCTSTR value, LPCTSTR data)
	357	{
	358	HKEY hKey;
	359	LONG ret;
	360	DWORD size;
	361
	362	ret = RegCreateKeyEx(HKEY_CLASSES_ROOT, key, 0, NULL,
	363	REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL);
	364	if (ret != ERROR_SUCCESS) {
	365	goto out;
	366	}
	367
	368	if (data != NULL) {
	369	size = strlen(data) + 1;
	370	} else {
	371	size = 0;
	372	}
	373
	374	ret = RegSetValueEx(hKey, value, 0, REG_SZ, (LPBYTE)data, size);
	375	RegCloseKey(hKey);
	376
	377	out:
	378	if (ret != ERROR_SUCCESS) {
	379	/* As we cannot printf within DllRegisterServer(), show a dialog. */
	380	errmsg_dialog(ret, "Cannot add registry", key);
	381	return FALSE;
	382	}
	383	return TRUE;
	384	}
	385
	386	/* Register this dll as a VSS provider */
	387	STDAPI DllRegisterServer(void)
	388	{
	389	COMInitializer initializer;
	390	COMPointer<IVssAdmin> pVssAdmin;
	391	HRESULT hr = E_FAIL;
	392	char dllPath[MAX_PATH];
	393	char key[256];
	394
	395	if (!g_hinstDll) {
	396	errmsg_dialog(hr, "Module instance is not available");
	397	goto out;
	398	}
	399
	400	/* Add this module to registery */
	401
	402	sprintf(key, "CLSID\\%s", g_szClsid);
	403	if (!CreateRegistryKey(key, NULL, g_szClsid)) {
	404	goto out;
	405	}
	406
	407	if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) {
	408	errmsg_dialog(GetLastError(), "GetModuleFileName failed");
409	goto out;
410	}
411
412	sprintf(key, "CLSID\\%s\\InprocServer32", g_szClsid);
413	if (!CreateRegistryKey(key, NULL, dllPath)) {
414	goto out;
415	}
416
417	if (!CreateRegistryKey(key, "ThreadingModel", "Apartment")) {
418	goto out;
419	}
420
421	sprintf(key, "CLSID\\%s\\ProgID", g_szClsid);
422	if (!CreateRegistryKey(key, NULL, g_szProgid)) {
423	goto out;
424	}
425
426	if (!CreateRegistryKey(g_szProgid, NULL, QGA_PROVIDER_NAME)) {
427	goto out;
428	}
429
430	sprintf(key, "%s\\CLSID", g_szProgid);
431	if (!CreateRegistryKey(key, NULL, g_szClsid)) {
432	goto out;
433	}
434
435	hr = CoCreateInstance(CLSID_VSSCoordinator, NULL, CLSCTX_ALL,
436	IID_IVssAdmin, (void **)pVssAdmin.replace());
437	if (FAILED(hr)) {
438	errmsg_dialog(hr, "CoCreateInstance(VSSCoordinator) failed");
439	goto out;
440	}
441
442	hr = pVssAdmin->RegisterProvider(g_gProviderId, CLSID_QGAVSSProvider,
443	const_cast<WCHAR*>(QGA_PROVIDER_LNAME),
444	VSS_PROV_SOFTWARE,
445	const_cast<WCHAR*>(QGA_PROVIDER_VERSION),
446	g_gProviderVersion);
b2413df8 SJ	447	if (hr == (long int) VSS_E_PROVIDER_ALREADY_REGISTERED) {
	448	DllUnregisterServer();
	449	hr = pVssAdmin->RegisterProvider(g_gProviderId, CLSID_QGAVSSProvider,
	450	const_cast<WCHAR * >
	451	(QGA_PROVIDER_LNAME),
	452	VSS_PROV_SOFTWARE,
	453	const_cast<WCHAR * >
	454	(QGA_PROVIDER_VERSION),
	455	g_gProviderVersion);
	456	}
	457
b39297ae TS	458	if (FAILED(hr)) {
	459	errmsg_dialog(hr, "RegisterProvider failed");
	460	}
	461
	462	out:
	463	if (FAILED(hr)) {
	464	DllUnregisterServer();
	465	}
	466
	467	return hr;
	468	}
	469
	470	/* Unregister this VSS hardware provider from the system */
	471	STDAPI DllUnregisterServer(void)
	472	{
	473	TCHAR key[256];
	474	COMInitializer initializer;
	475	COMPointer<IVssAdmin> pVssAdmin;
	476
	477	HRESULT hr = CoCreateInstance(CLSID_VSSCoordinator,
	478	NULL, CLSCTX_ALL, IID_IVssAdmin,
	479	(void **)pVssAdmin.replace());
	480	if (SUCCEEDED(hr)) {
	481	hr = pVssAdmin->UnregisterProvider(g_gProviderId);
	482	} else {
	483	errmsg(hr, "CoCreateInstance(VSSCoordinator) failed");
	484	}
	485
	486	sprintf(key, "CLSID\\%s", g_szClsid);
	487	SHDeleteKey(HKEY_CLASSES_ROOT, key);
	488	SHDeleteKey(HKEY_CLASSES_ROOT, g_szProgid);
	489
	490	return S_OK; /* Uninstall should never fail */
	491	}
	492
	493
	494	/* Support function to convert ASCII string into BSTR (used in _bstr_t) */
	495	namespace _com_util
	496	{
	497	BSTR WINAPI ConvertStringToBSTR(const char *ascii) {
	498	int len = strlen(ascii);
	499	BSTR bstr = SysAllocStringLen(NULL, len);
	500
	501	if (!bstr) {
	502	return NULL;
	503	}
	504
	505	if (mbstowcs(bstr, ascii, len) == (size_t)-1) {
	506	fprintf(stderr, "Failed to convert string '%s' into BSTR", ascii);
	507	bstr[0] = 0;
	508	}
	509	return bstr;
	510	}
	511	}
f342cc93	512
917ebcb1	513	/* Stop QGA VSS provider service using Winsvc API */
f342cc93 SJ	514	STDAPI StopService(void)
	515	{
	516	HRESULT hr;
917ebcb1 BS	517	SC_HANDLE manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
917ebcb1 BS	518	SC_HANDLE service = NULL;
f342cc93	519
917ebcb1 BS	520	if (!manager) {
	521	errmsg(E_FAIL, "Failed to open service manager");
	522	hr = E_FAIL;
	523	goto out;
	524	}
	525	service = OpenService(manager, QGA_PROVIDER_NAME, SC_MANAGER_ALL_ACCESS);
f342cc93	526
917ebcb1 BS	527	if (!service) {
	528	errmsg(E_FAIL, "Failed to open service");
	529	hr = E_FAIL;
	530	goto out;
	531	}
	532	if (!(ControlService(service, SERVICE_CONTROL_STOP, NULL))) {
	533	errmsg(E_FAIL, "Failed to stop service");
	534	hr = E_FAIL;
f342cc93 SJ	535	}
	536
	537	out:
917ebcb1 BS	538	CloseServiceHandle(service);
917ebcb1 BS	539	CloseServiceHandle(manager);
f342cc93 SJ	540	return hr;
f342cc93 SJ	541	}