[PATCH 0/1] MR9035: wbemprox: Use setupapi to enumerate video controllers.

[Tim Clem (＠tclem)]

So that we can access the correct device IDs.

---

The EA launcher uses WMI to query system information to tie licenses to particular machines. It expects that a video controller's PNPDeviceID will be valid (i.e. something under CurrentControlSet\Enum), which it no longer is since we stopped using DXGI in d511872a3d0dce5148d23ce5cbf80c989d484b26 / !7450. That information is available from setupapi, which is presumably faster than DXGI (speed was the motivating factor for !7450 - see the original bug https://bugs.winehq.org/show_bug.cgi?id=38879).

I'm all ears if there's a better way to associate the devices under CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318} with those that setupapi reads from ...\Enum, or if there's a way to get the stuff that's in ...\Class out of setupapi (e.g. the RAM and DAC type).

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/9035

[PATCH 1/1] wbemprox: Use setupapi to enumerate video controllers.

[Tim Clem]

From: Tim Clem <tclem(a)codeweavers.com>

So that we can access the correct device IDs.
---
 dlls/wbemprox/Makefile.in |   2 +-
 dlls/wbemprox/builtin.c   | 127 ++++++++++++++++++++++++--------------
 2 files changed, 83 insertions(+), 46 deletions(-)

diff --git a/dlls/wbemprox/Makefile.in b/dlls/wbemprox/Makefile.in
index 8c57cf95cdb..3abfac841c9 100644
--- a/dlls/wbemprox/Makefile.in
+++ b/dlls/wbemprox/Makefile.in
@@ -1,5 +1,5 @@
 MODULE    = wbemprox.dll
-IMPORTS   = winspool version iphlpapi oleaut32 ole32 advapi32 user32 gdi32 ws2_32
+IMPORTS   = winspool version iphlpapi setupapi oleaut32 ole32 advapi32 user32 gdi32 ws2_32
 
 SOURCES = \
 	builtin.c \
diff --git a/dlls/wbemprox/builtin.c b/dlls/wbemprox/builtin.c
index e306fbbce53..a2e309dd88b 100644
--- a/dlls/wbemprox/builtin.c
+++ b/dlls/wbemprox/builtin.c
@@ -40,6 +40,8 @@
 #include "ntsecapi.h"
 #include "winspool.h"
 #include "ntddstor.h"
+#include "setupapi.h"
+#include "devguid.h"
 
 #include "wine/debug.h"
 #include "wbemprox_private.h"
@@ -4530,58 +4532,105 @@ struct display_adapter
     WCHAR *driver_date;
     WCHAR *driver_desc;
     WCHAR *driver_version;
+    WCHAR *pnpdevice_id;
     WCHAR *dac_type;
     DWORD  memory_size;
 };
 
-static struct display_adapter *get_display_adapters( UINT *count )
+static WCHAR *get_string_devprop( HDEVINFO set, SP_DEVINFO_DATA *dev_info, const DEVPROPKEY *key )
 {
-    DWORD nb_allocated = 2, i = 0, idx_class = 0;
-    HKEY key_class, key_instance;
-    struct display_adapter *ret, *tmp;
-    WCHAR instance[5];
-
-    if (RegOpenKeyExW( HKEY_LOCAL_MACHINE,
-                       L"System\\CurrentControlSet\\Control\\Class\\{4d36e968-e325-11ce-bfc1-08002be10318}",
-                       0, KEY_ENUMERATE_SUB_KEYS, &key_class )) return NULL;
+    DEVPROPTYPE type;
+    DWORD size;
+    WCHAR *str;
 
-    if (!(ret = malloc( nb_allocated * sizeof(*ret) )))
+    if (SetupDiGetDevicePropertyW( set, dev_info, key, &type, NULL, 0, &size, 0 ) || GetLastError() != ERROR_INSUFFICIENT_BUFFER) return NULL;
+    if (type != DEVPROP_TYPE_STRING && type != DEVPROP_TYPE_STRING_LIST) return NULL;
+    if (!(str = malloc( size ))) return NULL;
+    if (!SetupDiGetDevicePropertyW( set, dev_info, key, &type, (BYTE *)str, size, NULL, 0 ))
     {
-        RegCloseKey( key_class );
+        free(str);
         return NULL;
     }
 
-    while (RegEnumKeyW( key_class, idx_class++, instance, ARRAY_SIZE(instance) ) != ERROR_NO_MORE_ITEMS)
+    return str;
+}
+
+static struct display_adapter *get_display_adapters( UINT *count )
+{
+    static const WCHAR *class_prefix = L"System\\CurrentControlSet\\Control\\Class\\";
+    DWORD nb_allocated = 2, i = 0, idx_devinfo = 0;
+    struct display_adapter *ret, *tmp;
+    HDEVINFO devs;
+    SP_DEVINFO_DATA dev_info = { .cbSize = sizeof(SP_DEVINFO_DATA) };
+
+    if (!(ret = malloc( nb_allocated * sizeof(*ret) ))) return NULL;
+
+    if ((devs = SetupDiGetClassDevsW( &GUID_DEVCLASS_DISPLAY, NULL, NULL, DIGCF_PRESENT )) == INVALID_HANDLE_VALUE) return NULL;
+
+    while(SetupDiEnumDeviceInfo( devs, idx_devinfo++, &dev_info ))
     {
-        if (!RegOpenKeyExW( key_class, instance, 0, KEY_READ, &key_instance ))
+        WCHAR *driver, *hw_ids;
+        UINT key_len;
+        WCHAR *key_path;
+        HKEY key_instance;
+
+        if (!(driver = get_string_devprop( devs, &dev_info, &DEVPKEY_Device_Driver ))) continue;
+        if (!(hw_ids = get_string_devprop( devs, &dev_info, &DEVPKEY_Device_HardwareIds )))
+        {
+            free( driver );
+            continue;
+        }
+
+        key_len = wcslen( class_prefix ) + wcslen( driver ) + 1;
+        if (!(key_path = calloc( sizeof(WCHAR), key_len )))
         {
-            ret[i].driver_date = get_reg_value( key_instance, L"DriverDate" );
-            ret[i].driver_desc = get_reg_value( key_instance, L"DriverDesc" );
-            ret[i].driver_version = get_reg_value( key_instance, L"DriverVersion" );
-            ret[i].dac_type = get_reg_value( key_instance, L"HardwareInformation.DacType" );
-            ret[i].memory_size = get_reg_value_dword( key_instance, L"HardwareInformation.MemorySize" );
-            if (++i >= nb_allocated)
+            free( driver );
+            free( hw_ids );
+            continue;
+        }
+
+        swprintf( key_path, key_len, L"%s%s", class_prefix, driver );
+        free( driver );
+
+        if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, key_path, 0, KEY_QUERY_VALUE, &key_instance ))
+        {
+            free( hw_ids );
+            free( key_path );
+            continue;
+        }
+
+        free( key_path );
+
+        ret[i].driver_date = get_reg_value( key_instance, L"DriverDate" );
+        ret[i].driver_desc = get_reg_value( key_instance, L"DriverDesc" );
+        ret[i].driver_version = get_reg_value( key_instance, L"DriverVersion" );
+        /* DEVPKEY_Device_HardwareIds is actually an array of null-terminated
+           strings, so consumers will only see the first one. */
+        ret[i].pnpdevice_id = hw_ids;
+        ret[i].dac_type = get_reg_value( key_instance, L"HardwareInformation.DacType" );
+        ret[i].memory_size = get_reg_value_dword( key_instance, L"HardwareInformation.MemorySize" );
+        if (++i >= nb_allocated)
+        {
+            nb_allocated *= 2;
+            if ((tmp = realloc( ret, nb_allocated * sizeof(*ret) ))) ret = tmp;
+            else
             {
-                nb_allocated *= 2;
-                if ((tmp = realloc( ret, nb_allocated * sizeof(*ret) ))) ret = tmp;
-                else
+                while (--i)
                 {
-                    while (--i)
-                    {
-                        free( ret[i].driver_date );
-                        free( ret[i].driver_desc );
-                        free( ret[i].driver_version );
-                        free( ret[i].dac_type );
-                    }
-                    goto done;
+                    free( ret[i].driver_date );
+                    free( ret[i].driver_desc );
+                    free( ret[i].driver_version );
+                    free( ret[i].pnpdevice_id );
+                    free( ret[i].dac_type );
                 }
+                RegCloseKey( key_instance );
+                goto done;
             }
-            RegCloseKey( key_instance );
         }
+        RegCloseKey( key_instance );
     }
 
 done:
-    RegCloseKey( key_class );
     if (!i)
     {
         free( ret );
@@ -4605,18 +4654,6 @@ static DWORD get_adapter_vendor_id( const WCHAR *desc )
     return HW_VENDOR_WINE;
 }
 
-static WCHAR *get_videocontroller_pnpdeviceid( const WCHAR *desc )
-{
-    static const WCHAR fmtW[] = L"PCI\\VEN_%04X&DEV_0000&SUBSYS_00000000&REV_00\\0&DEADBEEF&0&DEAD";
-    DWORD vendor_id = get_adapter_vendor_id( desc );
-    UINT len = ARRAY_SIZE(fmtW);
-    WCHAR *ret;
-
-    if (!(ret = malloc( len * sizeof(WCHAR) ))) return NULL;
-    swprintf( ret, len, fmtW, vendor_id );
-    return ret;
-}
-
 static const WCHAR *get_videocontroller_installeddriver( const WCHAR *desc )
 {
     DWORD vendor_id = get_adapter_vendor_id( desc );
@@ -4674,7 +4711,7 @@ static enum fill_status fill_videocontroller( struct table *table, const struct
         rec->driverversion         = adapters[i].driver_version;
         rec->installeddriver       = get_videocontroller_installeddriver( adapters[i].driver_desc );
         rec->name                  = wcsdup( rec->caption );
-        rec->pnpdevice_id          = get_videocontroller_pnpdeviceid( adapters[i].driver_desc );
+        rec->pnpdevice_id          = adapters[i].pnpdevice_id;
         rec->status                = L"OK";
         rec->videoarchitecture     = 2; /* Unknown */
         rec->videomemorytype       = 2; /* Unknown */
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/9035