Alexandre Julliard : kernelbase: Verify that the file can be opened when looking for an executable.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b82842461215f25c6d0819104cd06ab5cc7bf28a
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b82842461215f25c6d0819104cd06ab5cc7bf28a

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Wed Dec  4 10:07:03 2019 +0100

kernelbase: Verify that the file can be opened when looking for an executable.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48211
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/kernelbase/process.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/kernelbase/process.c b/dlls/kernelbase/process.c
index 51b75470c8..90ea299416 100644
--- a/dlls/kernelbase/process.c
+++ b/dlls/kernelbase/process.c
@@ -57,6 +57,13 @@ static BOOL find_exe_file( const WCHAR *name, WCHAR *buffer, DWORD buflen )
     ret = (SearchPathW( load_path, name, L".exe", buflen, buffer, NULL ) ||
            /* not found, try without extension in case it is a Unix app */
            SearchPathW( load_path, name, NULL, buflen, buffer, NULL ));
+
+    if (ret)  /* make sure it can be opened, SearchPathW also returns directories */
+    {
+        HANDLE handle = CreateFileW( buffer, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_DELETE,
+                                     NULL, OPEN_EXISTING, 0, 0 );
+        if ((ret = (handle != INVALID_HANDLE_VALUE))) CloseHandle( handle );
+    }
     RtlReleasePath( load_path );
     return ret;
 }