The utility muirct.exe for some reason accesses the opaque HANDLE that is returned by BeginUpdateResource, it assumes a certain structure in which (on 32bit systems) there is a pointer to the wide repesentation of the file name in offset 0x18 (0x30 on 64bit).
Refer to: muirct!BldToolsEndUpdateResourceW called from muirct!CopyChecksumToFile
Sample execution: MUIRCT.EXE -c "ui.exe" -e "de-DE\ui.exe.mui"
Signed-off-by: Jon Doron arilou@gmail.com --- dlls/kernel32/resource.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/dlls/kernel32/resource.c b/dlls/kernel32/resource.c index 73f3cca363..dda3a5c3a2 100644 --- a/dlls/kernel32/resource.c +++ b/dlls/kernel32/resource.c @@ -635,6 +635,7 @@ DWORD WINAPI SizeofResource( HINSTANCE hModule, HRSRC hRsrc )
typedef struct { + void *Unknown[6]; LPWSTR pFileName; BOOL bDeleteExistingResources; struct list root;
For some reason muirct.exe is aware of the opaque structure used by BeginUpdateResource, it access the filename field of the opaque structure during it's processing.
MS documentation for the muirct utility: https://docs.microsoft.com/en-us/windows/desktop/intl/resource-utilities
Sample execution: MUIRCT.EXE -c "ui.exe" -e "de-DE\ui.exe.mui"
Signed-off-by: Jon Doron arilou@gmail.com --- dlls/kernel32/tests/resource.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)
diff --git a/dlls/kernel32/tests/resource.c b/dlls/kernel32/tests/resource.c index 74066cfba3..1bae01ec19 100644 --- a/dlls/kernel32/tests/resource.c +++ b/dlls/kernel32/tests/resource.c @@ -24,6 +24,7 @@ #include "wine/test.h"
static const char filename[] = "test_.exe"; +static const WCHAR filenameW[] = {'t','e','s','t','_','.','e','x','e',0}; static DWORD GLE;
enum constants { @@ -463,6 +464,30 @@ static void test_find_resource(void) ok( GetLastError() == ERROR_RESOURCE_LANG_NOT_FOUND, "wrong error %u\n", GetLastError() ); }
+typedef struct +{ + void *Unknown[6]; + LPWSTR pFileName; +} QUEUEDUPDATES; + +static void test_resource_internal_structure_offsets(void) +{ + HANDLE res; + QUEUEDUPDATES *res_data; + WCHAR *res_filenameW; + + res = BeginUpdateResourceW( (PWCHAR)filenameW, FALSE ); + ok( res != NULL, "BeginUpdateResourceW failed\n" ); + res_data = (QUEUEDUPDATES *)GlobalLock(res); + ok( res_data != NULL, "GlobalLock failed\n" ); + res_filenameW = (PWCHAR)GlobalLock( (HGLOBAL)res_data->pFileName ); + ok( res_filenameW != NULL, "GlobalLock for res_filenameW failed\n" ); + ok( !lstrcmpW(res_filenameW, (PWCHAR)filenameW), "Filename fields do not match\n" ); + ok( GlobalUnlock( res_filenameW ), "GlobalUnlock res_filenamed failed\n" ); + ok( GlobalUnlock( res_data ), "GlobalUnlock res_data failed\n" ); + ok( EndUpdateResourceW( res, TRUE ), "EndUpdateResourceW failed\n"); +} + START_TEST(resource) { DWORD i; @@ -482,6 +507,7 @@ START_TEST(resource) { const struct _sec_variants *sec = &sec_variants[i]; build_exe( &sec->build ); + test_resource_internal_structure_offsets(); update_resources_none(); check_exe( &sec->chk_none ); update_resources_delete();
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Jon Doron