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winealsa: Rewrite get_reg_devices() using the Nt registry api. 

This code will move to the unixlib.

Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Andrew Eikum <aeikum@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Huw Davies 2022-02-15 13:09:52 +00:00 committed by Alexandre Julliard
parent dde06247a7
commit 60d6eb4df7
1 changed files with 82 additions and 14 deletions
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96
dlls/winealsa.drv/mmdevdrv.c
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@ -166,7 +166,7 @@ static const char defname[] = "default";
static const WCHAR drv_keyW[] = {'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','D','r','i','v','e','r','s','\\',
'w','i','n','e','a','l','s','a','.','d','r','v',0};
'w','i','n','e','a','l','s','a','.','d','r','v'};
static const WCHAR drv_key_devicesW[] = {'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','D','r','i','v','e','r','s','\\',
'w','i','n','e','a','l','s','a','.','d','r','v','\\','d','e','v','i','c','e','s',0};
@ -351,6 +351,73 @@ static void get_device_guid(EDataFlow flow, const char *device, GUID *guid)
RegCloseKey(key);
}
static inline void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
{
while (len--) *dst++ = (unsigned char)*src++;
}
static HKEY reg_open_key( HKEY root, const WCHAR *name, ULONG name_len )
{
UNICODE_STRING nameW = { name_len, name_len, (WCHAR *)name };
OBJECT_ATTRIBUTES attr;
HANDLE ret;
attr.Length = sizeof(attr);
attr.RootDirectory = root;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
if (NtOpenKeyEx( &ret, MAXIMUM_ALLOWED, &attr, 0 )) return 0;
return ret;
}
static HKEY open_hkcu(void)
{
char buffer[256];
WCHAR bufferW[256];
DWORD_PTR sid_data[(sizeof(TOKEN_USER) + SECURITY_MAX_SID_SIZE) / sizeof(DWORD_PTR)];
DWORD i, len = sizeof(sid_data);
SID *sid;
if (NtQueryInformationToken( GetCurrentThreadEffectiveToken(), TokenUser, sid_data, len, &len ))
return 0;
sid = ((TOKEN_USER *)sid_data)->User.Sid;
len = sprintf( buffer, "\\Registry\\User\\S-%u-%u", sid->Revision,
MAKELONG( MAKEWORD( sid->IdentifierAuthority.Value[5], sid->IdentifierAuthority.Value[4] ),
MAKEWORD( sid->IdentifierAuthority.Value[3], sid->IdentifierAuthority.Value[2] )));
for (i = 0; i < sid->SubAuthorityCount; i++)
len += sprintf( buffer + len, "-%u", sid->SubAuthority[i] );
ascii_to_unicode( bufferW, buffer, len + 1 );
return reg_open_key( NULL, bufferW, len * sizeof(WCHAR) );
}
static HKEY reg_open_hkcu_key( const WCHAR *name, ULONG name_len )
{
HKEY hkcu = open_hkcu(), key;
key = reg_open_key( hkcu, name, name_len );
NtClose( hkcu );
return key;
}
ULONG reg_query_value( HKEY hkey, const WCHAR *name,
KEY_VALUE_PARTIAL_INFORMATION *info, ULONG size )
{
unsigned int name_size = name ? lstrlenW( name ) * sizeof(WCHAR) : 0;
UNICODE_STRING nameW = { name_size, name_size, (WCHAR *)name };
if (NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
info, size, &size ))
return 0;
return size - FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data);
}
static snd_pcm_stream_t alsa_get_direction(EDataFlow flow)
{
return (flow == eRender) ? SND_PCM_STREAM_PLAYBACK : SND_PCM_STREAM_CAPTURE;
@ -496,27 +563,28 @@ static void get_reg_devices(EDataFlow flow, WCHAR ***ids, GUID **guids, UINT *nu
{
static const WCHAR ALSAOutputDevices[] = {'A','L','S','A','O','u','t','p','u','t','D','e','v','i','c','e','s',0};
static const WCHAR ALSAInputDevices[] = {'A','L','S','A','I','n','p','u','t','D','e','v','i','c','e','s',0};
char buffer[4096];
KEY_VALUE_PARTIAL_INFORMATION *key_info = (void *)buffer;
HKEY key;
WCHAR reg_devices[256];
DWORD size = sizeof(reg_devices), type;
DWORD size;
const WCHAR *value_name = (flow == eRender) ? ALSAOutputDevices : ALSAInputDevices;
/* @@ Wine registry key: HKCU\Software\Wine\Drivers\winealsa.drv */
if(RegOpenKeyW(HKEY_CURRENT_USER, drv_keyW, &key) == ERROR_SUCCESS){
if(RegQueryValueExW(key, value_name, 0, &type,
(BYTE*)reg_devices, &size) == ERROR_SUCCESS){
WCHAR *p = reg_devices;
if((key = reg_open_hkcu_key(drv_keyW, sizeof(drv_keyW)))){
if((size = reg_query_value(key, value_name, key_info, sizeof(buffer)))){
WCHAR *p = (WCHAR *)key_info->Data;
if(type != REG_MULTI_SZ){
if(key_info->Type != REG_MULTI_SZ){
ERR("Registry ALSA device list value type must be REG_MULTI_SZ\n");
RegCloseKey(key);
NtClose(key);
return;
}
while(*p){
char devname[64];
int len = lstrlenW(p);
char *devname = malloc(len * 3 + 1);
WideCharToMultiByte(CP_UNIXCP, 0, p, -1, devname, sizeof(devname), NULL, NULL);
WideCharToMultiByte(CP_UNIXCP, 0, p, -1, devname, len * 3 + 1, NULL, NULL);
if(alsa_try_open(devname, flow)){
if(*num){
@ -530,12 +598,12 @@ static void get_reg_devices(EDataFlow flow, WCHAR ***ids, GUID **guids, UINT *nu
get_device_guid(flow, devname, &(*guids)[*num]);
++*num;
}
p += lstrlenW(p) + 1;
free(devname);
p += len + 1;
}
}
RegCloseKey(key);
NtClose(key);
}
}