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Fail when LPRECT contains negative values.

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Ivan de Saedeleer 1999-10-31 21:32:42 +00:00 committed by Alexandre Julliard
parent 18c9ee815e
commit b81e96eb2a
1 changed files with 15 additions and 0 deletions
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15
graphics/ddraw.c
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@ -1014,6 +1014,13 @@ static HRESULT WINAPI IDirectDrawSurface4Impl_Blt(
} }
if (rdst) { if (rdst) {
if ((rdst->top < 0) ||
(rdst->left < 0) ||
(rdst->bottom < 0) ||
(rdst->right < 0)) {
ERR(" Negative values in LPRECT !!!\n");
goto release;
}
memcpy(&xdst,rdst,sizeof(xdst)); memcpy(&xdst,rdst,sizeof(xdst));
} else { } else {
xdst.top = 0; xdst.top = 0;
@ -1023,6 +1030,13 @@ static HRESULT WINAPI IDirectDrawSurface4Impl_Blt(
} }
if (rsrc) { if (rsrc) {
if ((rsrc->top < 0) ||
(rsrc->left < 0) ||
(rsrc->bottom < 0) ||
(rsrc->right < 0)) {
ERR(" Negative values in LPRECT !!!\n");
goto release;
}
memcpy(&xsrc,rsrc,sizeof(xsrc)); memcpy(&xsrc,rsrc,sizeof(xsrc));
} else { } else {
if (src) { if (src) {
@ -1204,6 +1218,7 @@ static HRESULT WINAPI IDirectDrawSurface4Impl_Blt(
FIXME("\tUnsupported flags: "); FIXME("\tUnsupported flags: ");
_dump_DDBLT(dwFlags); _dump_DDBLT(dwFlags);
} }
release:
IDirectDrawSurface4_Unlock(iface,ddesc.u1.lpSurface); IDirectDrawSurface4_Unlock(iface,ddesc.u1.lpSurface);
if (src) IDirectDrawSurface4_Unlock(src,sdesc.u1.lpSurface); if (src) IDirectDrawSurface4_Unlock(src,sdesc.u1.lpSurface);