BOOL WINAPI CryptAcquireContextW(HCRYPTPROV *phProv, LPCTSTR pszContainer, LPCTSTR pszProvider, DWORD dwProvType, DWORD dwFlags)
{
static const WCHAR *className = L"Windows.Security.Cryptography.CryptographicBuffer";
const UINT32 clen = wcslen(className);
HSTRING hClassName = NULL;
HSTRING_HEADER header;
HRESULT hr = WindowsCreateStringReference(className, clen, &header, &hClassName);
if (FAILED(hr)) {
WindowsDeleteString(hClassName);
return FALSE;
}
ICryptographicBufferStatics *cryptoStatics = NULL;
hr = RoGetActivationFactory(hClassName, &IID_ICryptographicBufferStatics, (void**)&cryptoStatics);
WindowsDeleteString(hClassName);
if (FAILED(hr))
return FALSE;
*phProv = cryptoStatics;
return TRUE;
}
void vlc_rand_bytes (void *buf, size_t len)
{
size_t count = len;
uint8_t *p_buf = (uint8_t *)buf;
/* fill buffer with pseudo-random data */
while (count > 0)
{
unsigned int val;
val = rand();
if (count < sizeof (val))
{
memcpy (p_buf, &val, count);
break;
}
memcpy (p_buf, &val, sizeof (val));
count -= sizeof (val);
p_buf += sizeof (val);
}
#if VLC_WINSTORE_APP
static const WCHAR *className = L"Windows.Security.Cryptography.CryptographicBuffer";
const UINT32 clen = wcslen(className);
HSTRING hClassName = NULL;
HSTRING_HEADER header;
HRESULT hr = WindowsCreateStringReference(className, clen, &header, &hClassName);
if (hr) {
WindowsDeleteString(hClassName);
return;
}
ICryptographicBufferStatics *cryptoStatics = NULL;
hr = RoGetActivationFactory(hClassName, &IID_ICryptographicBufferStatics, (void**)&cryptoStatics);
WindowsDeleteString(hClassName);
if (hr)
return;
IBuffer *buffer = NULL;
hr = ICryptographicBufferStatics_GenerateRandom(cryptoStatics, len, &buffer);
if (hr) {
ICryptographicBufferStatics_Release(cryptoStatics);
return;
}
UINT32 olength;
unsigned char *rnd = NULL;
hr = ICryptographicBufferStatics_CopyToByteArray(cryptoStatics, buffer, &olength, (BYTE**)&rnd);
memcpy(buf, rnd, len);
IBuffer_Release(buffer);
ICryptographicBufferStatics_Release(cryptoStatics);
#else
HCRYPTPROV hProv;
/* acquire default encryption context */
if( CryptAcquireContext(
&hProv, // Variable to hold returned handle.
NULL, // Use default key container.
MS_DEF_PROV, // Use default CSP.
PROV_RSA_FULL, // Type of provider to acquire.
CRYPT_VERIFYCONTEXT) ) // Flag values
{
/* fill buffer with pseudo-random data, intial buffer content
is used as auxillary random seed */
CryptGenRandom(hProv, len, buf);
CryptReleaseContext(hProv, 0);
}
#endif /* VLC_WINSTORE_APP */
}
static HRESULT WinRTSHGetFolderPath(HWND hwnd, int csidl, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath)
{
VLC_UNUSED(hwnd);
VLC_UNUSED(hToken);
HRESULT hr;
IStorageFolder *folder;
if (dwFlags != SHGFP_TYPE_CURRENT)
return E_NOTIMPL;
folder = NULL;
csidl &= ~0xFF00; /* CSIDL_FLAG_MASK */
if (csidl == CSIDL_APPDATA) {
IApplicationDataStatics *appDataStatics = NULL;
IApplicationData *appData = NULL;
static const WCHAR *className = L"Windows.Storage.ApplicationData";
const UINT32 clen = wcslen(className);
HSTRING hClassName = NULL;
HSTRING_HEADER header;
hr = WindowsCreateStringReference(className, clen, &header, &hClassName);
if (FAILED(hr))
goto end_appdata;
hr = RoGetActivationFactory(hClassName, &IID_IApplicationDataStatics, (void**)&appDataStatics);
if (FAILED(hr))
goto end_appdata;
if (!appDataStatics) {
hr = E_FAIL;
goto end_appdata;
}
hr = IApplicationDataStatics_get_Current(appDataStatics, &appData);
if (FAILED(hr))
goto end_appdata;
if (!appData) {
hr = E_FAIL;
goto end_appdata;
}
hr = IApplicationData_get_LocalFolder(appData, &folder);
end_appdata:
WindowsDeleteString(hClassName);
if (appDataStatics)
IApplicationDataStatics_Release(appDataStatics);
if (appData)
IApplicationData_Release(appData);
}
else
{
IKnownFoldersStatics *knownFoldersStatics = NULL;
static const WCHAR *className = L"Windows.Storage.KnownFolders";
const UINT32 clen = wcslen(className);
HSTRING hClassName = NULL;
HSTRING_HEADER header;
hr = WindowsCreateStringReference(className, clen, &header, &hClassName);
if (FAILED(hr))
goto end_other;
hr = RoGetActivationFactory(hClassName, &IID_IKnownFoldersStatics, (void**)&knownFoldersStatics);
if (FAILED(hr))
goto end_other;
if (!knownFoldersStatics) {
hr = E_FAIL;
goto end_other;
}
switch (csidl) {
case CSIDL_PERSONAL:
hr = IKnownFoldersStatics_get_DocumentsLibrary(knownFoldersStatics, &folder);
break;
case CSIDL_MYMUSIC:
hr = IKnownFoldersStatics_get_MusicLibrary(knownFoldersStatics, &folder);
break;
case CSIDL_MYPICTURES:
hr = IKnownFoldersStatics_get_PicturesLibrary(knownFoldersStatics, &folder);
break;
case CSIDL_MYVIDEO:
hr = IKnownFoldersStatics_get_VideosLibrary(knownFoldersStatics, &folder);
break;
default:
hr = E_NOTIMPL;
}
end_other:
WindowsDeleteString(hClassName);
if (knownFoldersStatics)
IKnownFoldersStatics_Release(knownFoldersStatics);
}
if( SUCCEEDED(hr) && folder != NULL )
{
HSTRING path = NULL;
IStorageItem *item = NULL;
PCWSTR pszPathTemp;
hr = IStorageFolder_QueryInterface(folder, &IID_IStorageItem, (void**)&item);
if (FAILED(hr))
goto end_folder;
hr = IStorageItem_get_Path(item, &path);
if (FAILED(hr))
goto end_folder;
pszPathTemp = WindowsGetStringRawBuffer(path, NULL);
wcscpy(pszPath, pszPathTemp);
end_folder:
WindowsDeleteString(path);
IStorageFolder_Release(folder);
if (item)
IStorageItem_Release(item);
}
return hr;
}
