From da3cf82252881cb1e4315bd0ecb44bd27ee5520f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michael=20M=C3=BCller?= 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 | 44 +++++++++++++++++++++----------------------- 1 file changed, 21 insertions(+), 23 deletions(-) diff --git a/dlls/winmm/mci.c b/dlls/winmm/mci.c index 959801aa835..c56a69def11 100644 --- a/dlls/winmm/mci.c +++ b/dlls/winmm/mci.c @@ -204,7 +204,7 @@ static LPWSTR MCI_strdupAtoW( LPCSTR str ) return ret; } -static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) +static DWORD MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) { if (msg < DRV_RESERVED) return 0; @@ -247,8 +247,12 @@ static int 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 -1; + if (!ptr) return MCIERR_OUT_OF_MEMORY; *ptr++ = *dwParam2; /* save the previous pointer */ *dwParam2 = (DWORD_PTR)ptr; @@ -278,7 +282,7 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) if (HIWORD(dwParam1)) memcpy(&mci_openW->dwStyle, &mci_openA->dwStyle, sizeof(MCI_ANIM_OPEN_PARMSW) - sizeof(MCI_OPEN_PARMSW)); } - return 1; + return 0; case MCI_WINDOW: if (dwParam1 & MCI_ANIM_WINDOW_TEXT) @@ -286,8 +290,8 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) MCI_ANIM_WINDOW_PARMSA *mci_windowA = (MCI_ANIM_WINDOW_PARMSA *)*dwParam2; MCI_ANIM_WINDOW_PARMSW *mci_windowW; - mci_windowW = malloc(sizeof(*mci_windowW)); - if (!mci_windowW) return -1; + mci_windowW = malloc( sizeof(*mci_windowW)); + if (!mci_windowW) return MCIERR_OUT_OF_MEMORY; *dwParam2 = (DWORD_PTR)mci_windowW; @@ -299,8 +303,6 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) mci_windowW->hWnd = mci_windowA->hWnd; if (dwParam1 & MCI_ANIM_WINDOW_STATE) mci_windowW->nCmdShow = mci_windowA->nCmdShow; - - return 1; } return 0; @@ -312,7 +314,7 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) DWORD_PTR *ptr; ptr = malloc(sizeof(*mci_sysinfoW) + sizeof(DWORD_PTR)); - if (!ptr) return -1; + if (!ptr) return MCIERR_OUT_OF_MEMORY; *ptr++ = *dwParam2; /* save the previous pointer */ *dwParam2 = (DWORD_PTR)ptr; @@ -326,7 +328,6 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) mci_sysinfoW->lpstrReturn = malloc(mci_sysinfoW->dwRetSize * sizeof(WCHAR)); mci_sysinfoW->dwNumber = mci_sysinfoA->dwNumber; mci_sysinfoW->wDeviceType = mci_sysinfoA->wDeviceType; - return 1; } return 0; case MCI_INFO: @@ -336,7 +337,7 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) DWORD_PTR *ptr; ptr = malloc(sizeof(*mci_infoW) + sizeof(DWORD_PTR)); - if (!ptr) return -1; + if (!ptr) return MCIERR_OUT_OF_MEMORY; *ptr++ = *dwParam2; /* save the previous pointer */ *dwParam2 = (DWORD_PTR)ptr; @@ -350,8 +351,8 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) mci_infoW->lpstrReturn = malloc(mci_infoW->dwRetSize * sizeof(WCHAR)); if (dwParam1 & MCI_DGV_INFO_ITEM) mci_infoW->dwItem = mci_infoA->dwItem; - return 1; } + return 0; case MCI_SAVE: case MCI_LOAD: case MCI_CAPTURE: @@ -361,7 +362,7 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) MCI_OVLY_LOAD_PARMSW *mci_loadW; mci_loadW = malloc(sizeof(*mci_loadW)); - if (!mci_loadW) return -1; + if (!mci_loadW) return MCIERR_OUT_OF_MEMORY; *dwParam2 = (DWORD_PTR)mci_loadW; if (dwParam1 & MCI_NOTIFY) @@ -372,8 +373,8 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) (MCI_CAPTURE == msg && dwParam1 & MCI_DGV_CAPTURE_AT) || (MCI_RESTORE == msg && dwParam1 & MCI_DGV_RESTORE_AT)) mci_loadW->rc = mci_loadA->rc; - return 1; } + return 0; case MCI_SOUND: case MCI_ESCAPE: { /* All these commands have the same layout: callback + string */ @@ -381,14 +382,14 @@ static int MCI_MapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR *dwParam2) MCI_VD_ESCAPE_PARMSW *mci_vd_escapeW; mci_vd_escapeW = malloc(sizeof(*mci_vd_escapeW)); - if (!mci_vd_escapeW) return -1; + if (!mci_vd_escapeW) return MCIERR_OUT_OF_MEMORY; *dwParam2 = (DWORD_PTR)mci_vd_escapeW; if (dwParam1 & MCI_NOTIFY) mci_vd_escapeW->dwCallback = mci_vd_escapeA->dwCallback; mci_vd_escapeW->lpstrCommand = MCI_strdupAtoW(mci_vd_escapeA->lpstrCommand); - return 1; } + return 0; case MCI_SETAUDIO: case MCI_SETVIDEO: if (!(dwParam1 & (MCI_DGV_SETVIDEO_QUALITY | MCI_DGV_SETVIDEO_ALG @@ -501,7 +502,6 @@ static void MCI_UnmapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR dwParam2, break; default: - FIXME("Message %s needs unmapping\n", MCI_MessageToString(msg)); break; } } @@ -2282,20 +2282,18 @@ DWORD WINAPI mciSendCommandW(MCIDEVICEID wDevID, UINT wMsg, DWORD_PTR dwParam1, DWORD WINAPI mciSendCommandA(MCIDEVICEID wDevID, UINT wMsg, DWORD_PTR dwParam1, DWORD_PTR dwParam2) { DWORD ret; - int mapped; TRACE("(%08x, %s, %08Ix, %08Ix)\n", wDevID, MCI_MessageToString(wMsg), dwParam1, dwParam2); - mapped = MCI_MapMsgAtoW(wMsg, dwParam1, &dwParam2); - if (mapped == -1) + ret = MCI_MapMsgAtoW(wMsg, dwParam1, &dwParam2); + if (ret) { FIXME("message %04x mapping failed\n", wMsg); - return MCIERR_OUT_OF_MEMORY; + return ret; } - ret = mciSendCommandW(wDevID, wMsg, dwParam1, dwParam2); - if (mapped) - MCI_UnmapMsgAtoW(wMsg, dwParam1, dwParam2, ret); + ret = mciSendCommandW(wDevID, wMsg, dwParam1, dwParam2); + MCI_UnmapMsgAtoW(wMsg, dwParam1, dwParam2, ret); return ret; } -- 2.40.1