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webservices: Protect heaps with a critical section. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2017-03-08 11:25:59 +01:00 committed by Alexandre Julliard
parent f261a830c4
commit dea8708079
1 changed files with 134 additions and 48 deletions
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182
dlls/webservices/reader.c
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@ -284,13 +284,17 @@ static const struct prop_desc heap_props[] =
struct heap
{
HANDLE handle;
SIZE_T max_size;
SIZE_T allocated;
ULONG prop_count;
struct prop prop[sizeof(heap_props)/sizeof(heap_props[0])];
ULONG magic;
CRITICAL_SECTION cs;
HANDLE handle;
SIZE_T max_size;
SIZE_T allocated;
ULONG prop_count;
struct prop prop[sizeof(heap_props)/sizeof(heap_props[0])];
};
#define HEAP_MAGIC (('H' << 24) | ('E' << 16) | ('A' << 8) | 'P')
static BOOL ensure_heap( struct heap *heap )
{
SIZE_T size;
@ -304,31 +308,48 @@ static BOOL ensure_heap( struct heap *heap )
void *ws_alloc( WS_HEAP *handle, SIZE_T size )
{
void *ret;
struct heap *heap = (struct heap *)handle;
if (!ensure_heap( heap ) || size > heap->max_size - heap->allocated) return NULL;
void *ret = NULL;
EnterCriticalSection( &heap->cs );
if (heap->magic != HEAP_MAGIC) goto done;
if (!ensure_heap( heap ) || size > heap->max_size - heap->allocated) goto done;
if ((ret = HeapAlloc( heap->handle, 0, size ))) heap->allocated += size;
done:
LeaveCriticalSection( &heap->cs );
return ret;
}
static void *ws_alloc_zero( WS_HEAP *handle, SIZE_T size )
{
void *ret;
struct heap *heap = (struct heap *)handle;
if (!ensure_heap( heap ) || size > heap->max_size - heap->allocated) return NULL;
void *ret = NULL;
EnterCriticalSection( &heap->cs );
if (heap->magic != HEAP_MAGIC) goto done;
if (!ensure_heap( heap ) || size > heap->max_size - heap->allocated) goto done;
if ((ret = HeapAlloc( heap->handle, HEAP_ZERO_MEMORY, size ))) heap->allocated += size;
done:
LeaveCriticalSection( &heap->cs );
return ret;
}
void *ws_realloc( WS_HEAP *handle, void *ptr, SIZE_T old_size, SIZE_T new_size )
{
void *ret;
struct heap *heap = (struct heap *)handle;
if (!ensure_heap( heap )) return NULL;
void *ret = NULL;
EnterCriticalSection( &heap->cs );
if (heap->magic != HEAP_MAGIC || !ensure_heap( heap )) goto done;
if (new_size >= old_size)
{
SIZE_T size = new_size - old_size;
if (size > heap->max_size - heap->allocated) return NULL;
if (size > heap->max_size - heap->allocated) goto done;
if ((ret = HeapReAlloc( heap->handle, 0, ptr, new_size ))) heap->allocated += size;
}
else
@ -336,18 +357,24 @@ void *ws_realloc( WS_HEAP *handle, void *ptr, SIZE_T old_size, SIZE_T new_size )
SIZE_T size = old_size - new_size;
if ((ret = HeapReAlloc( heap->handle, 0, ptr, new_size ))) heap->allocated -= size;
}
done:
LeaveCriticalSection( &heap->cs );
return ret;
}
static void *ws_realloc_zero( WS_HEAP *handle, void *ptr, SIZE_T old_size, SIZE_T new_size )
{
void *ret;
struct heap *heap = (struct heap *)handle;
if (!ensure_heap( heap )) return NULL;
void *ret = NULL;
EnterCriticalSection( &heap->cs );
if (heap->magic != HEAP_MAGIC || !ensure_heap( heap )) goto done;
if (new_size >= old_size)
{
SIZE_T size = new_size - old_size;
if (size > heap->max_size - heap->allocated) return NULL;
if (size > heap->max_size - heap->allocated) goto done;
if ((ret = HeapReAlloc( heap->handle, HEAP_ZERO_MEMORY, ptr, new_size ))) heap->allocated += size;
}
else
@ -355,15 +382,25 @@ static void *ws_realloc_zero( WS_HEAP *handle, void *ptr, SIZE_T old_size, SIZE_
SIZE_T size = old_size - new_size;
if ((ret = HeapReAlloc( heap->handle, HEAP_ZERO_MEMORY, ptr, new_size ))) heap->allocated -= size;
}
done:
LeaveCriticalSection( &heap->cs );
return ret;
}
void ws_free( WS_HEAP *handle, void *ptr, SIZE_T size )
{
struct heap *heap = (struct heap *)handle;
if (!heap->handle) return;
HeapFree( heap->handle, 0, ptr );
heap->allocated -= size;
EnterCriticalSection( &heap->cs );
if (heap->magic == HEAP_MAGIC)
{
HeapFree( heap->handle, 0, ptr );
heap->allocated -= size;
}
LeaveCriticalSection( &heap->cs );
}
/**************************************************************************
@ -389,6 +426,11 @@ static struct heap *alloc_heap(void)
ULONG size = sizeof(*ret) + prop_size( heap_props, count );
if (!(ret = heap_alloc_zero( size ))) return NULL;
ret->magic = HEAP_MAGIC;
InitializeCriticalSection( &ret->cs );
ret->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": heap.cs");
prop_init( heap_props, count, ret->prop, &ret[1] );
ret->prop_count = count;
return ret;
@ -415,6 +457,13 @@ HRESULT WINAPI WsCreateHeap( SIZE_T max_size, SIZE_T trim_size, const WS_HEAP_PR
return S_OK;
}
static void reset_heap( struct heap *heap )
{
HeapDestroy( heap->handle );
heap->handle = NULL;
heap->max_size = heap->allocated = 0;
}
/**************************************************************************
* WsFreeHeap [webservices.@]
*/
@ -425,7 +474,22 @@ void WINAPI WsFreeHeap( WS_HEAP *handle )
TRACE( "%p\n", handle );
if (!heap) return;
HeapDestroy( heap->handle );
EnterCriticalSection( &heap->cs );
if (heap->magic != HEAP_MAGIC)
{
LeaveCriticalSection( &heap->cs );
return;
}
reset_heap( heap );
heap->magic = 0;
LeaveCriticalSection( &heap->cs );
heap->cs.DebugInfo->Spare[0] = 0;
DeleteCriticalSection( &heap->cs );
heap_free( heap );
}
@ -441,12 +505,60 @@ HRESULT WINAPI WsResetHeap( WS_HEAP *handle, WS_ERROR *error )
if (!heap) return E_INVALIDARG;
HeapDestroy( heap->handle );
heap->handle = NULL;
heap->max_size = heap->allocated = 0;
EnterCriticalSection( &heap->cs );
if (heap->magic != HEAP_MAGIC)
{
LeaveCriticalSection( &heap->cs );
return E_INVALIDARG;
}
reset_heap( heap );
LeaveCriticalSection( &heap->cs );
return S_OK;
}
/**************************************************************************
* WsGetHeapProperty [webservices.@]
*/
HRESULT WINAPI WsGetHeapProperty( WS_HEAP *handle, WS_HEAP_PROPERTY_ID id, void *buf,
ULONG size, WS_ERROR *error )
{
struct heap *heap = (struct heap *)handle;
HRESULT hr = S_OK;
TRACE( "%p %u %p %u %p\n", handle, id, buf, size, error );
if (error) FIXME( "ignoring error parameter\n" );
if (!heap) return E_INVALIDARG;
EnterCriticalSection( &heap->cs );
if (heap->magic != HEAP_MAGIC)
{
LeaveCriticalSection( &heap->cs );
return E_INVALIDARG;
}
switch (id)
{
case WS_HEAP_PROPERTY_REQUESTED_SIZE:
case WS_HEAP_PROPERTY_ACTUAL_SIZE:
{
SIZE_T *heap_size = buf;
if (!buf || size != sizeof(heap_size)) hr = E_INVALIDARG;
else *heap_size = heap->allocated;
break;
}
default:
hr = prop_get( heap->prop, heap->prop_count, id, buf, size );
}
LeaveCriticalSection( &heap->cs );
return hr;
}
struct node *alloc_node( WS_XML_NODE_TYPE type )
{
struct node *ret;
@ -960,32 +1072,6 @@ HRESULT WINAPI WsFillReader( WS_XML_READER *handle, ULONG min_size, const WS_ASY
return S_OK;
}
/**************************************************************************
* WsGetHeapProperty [webservices.@]
*/
HRESULT WINAPI WsGetHeapProperty( WS_HEAP *handle, WS_HEAP_PROPERTY_ID id, void *buf,
ULONG size, WS_ERROR *error )
{
struct heap *heap = (struct heap *)handle;
TRACE( "%p %u %p %u %p\n", handle, id, buf, size, error );
if (error) FIXME( "ignoring error parameter\n" );
switch (id)
{
case WS_HEAP_PROPERTY_REQUESTED_SIZE:
case WS_HEAP_PROPERTY_ACTUAL_SIZE:
{
SIZE_T *heap_size = buf;
if (!buf || size != sizeof(heap_size)) return E_INVALIDARG;
*heap_size = heap->allocated;
return S_OK;
}
default:
return prop_get( heap->prop, heap->prop_count, id, buf, size );
}
}
/**************************************************************************
* WsGetNamespaceFromPrefix [webservices.@]
*/