wine-staging/patches/winmm-mciSendCommandA/0001-winmm-Do-not-crash-in-Win-9X-mode-when-an-invalid-de.patch

From b15d46b4ddeddaea146f754ac5a618b8721deeee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
Date: Fri, 4 Mar 2016 16:15:50 +0100
Subject: [PATCH] winmm: Do not crash in Win 9X mode when an invalid device ptr
 is passed to MCI_OPEN.

---
 dlls/winmm/mci.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/winmm/mci.c b/dlls/winmm/mci.c
index 2048dd65a50..1df3430dc74 100644
--- a/dlls/winmm/mci.c
+++ b/dlls/winmm/mci.c
@@ -247,6 +247,10 @@ static DWORD MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2)
             MCI_ANIM_OPEN_PARMSW *mci_openW;
             DWORD_PTR *ptr;
 
+            if ((dwParam1 & (MCI_OPEN_TYPE|MCI_OPEN_TYPE_ID)) == MCI_OPEN_TYPE &&
+                (GetVersion() & 0x80000000) && IsBadStringPtrA(mci_openA->lpstrDeviceType, -1))
+                return MCIERR_MISSING_COMMAND_STRING;
+
             ptr = malloc(sizeof(DWORD_PTR) + sizeof(*mci_openW));
             if (!ptr) return MCIERR_OUT_OF_MEMORY;
 
@@ -2288,7 +2292,6 @@ DWORD WINAPI mciSendCommandA(MCIDEVICEID wDevID, UINT wMsg, DWORD_PTR dwParam1,
         return ret;
     }
     ret = mciSendCommandW(wDevID, wMsg, dwParam1, dwParam2);
-
     MCI_UnmapMsgAtoW(wMsg, dwParam1, dwParam2, ret);
     return ret;
 }
-- 
2.51.0