ui/vnc: fix potential memory corruption issues

[qemu.git] / ui / vnc.h

diff --git a/ui/vnc.h b/ui/vnc.h
index 8da81b8d6eba60088f3bd065b3be0d95d640aa76..8f582fdc6cd669d18e3b2dd8b9782d64aa5cf694 100644 (file)
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -31,7 +31,6 @@
 #include "qemu/queue.h"
 #include "qemu/thread.h"
 #include "ui/console.h"
-#include "monitor/monitor.h"
 #include "audio/audio.h"
 #include "qemu/bitmap.h"
 #include <zlib.h>
@@ -40,6 +39,7 @@
 #include "keymaps.h"
 #include "vnc-palette.h"
 #include "vnc-enc-zrle.h"
+#include "qapi-types.h"
 
 // #define _VNC_DEBUG 1
 
@@ -77,14 +77,15 @@ typedef void VncSendHextileTile(VncState *vs,
                                 void *last_fg,
                                 int *has_bg, int *has_fg);
 
-/* VNC_MAX_WIDTH must be a multiple of 16. */
-#define VNC_MAX_WIDTH 2560
-#define VNC_MAX_HEIGHT 2048
-
 /* VNC_DIRTY_PIXELS_PER_BIT is the number of dirty pixels represented
- * by one bit in the dirty bitmap */
+ * by one bit in the dirty bitmap, should be a power of 2 */
 #define VNC_DIRTY_PIXELS_PER_BIT 16
 
+/* VNC_MAX_WIDTH must be a multiple of VNC_DIRTY_PIXELS_PER_BIT. */
+
+#define VNC_MAX_WIDTH ROUND_UP(2560, VNC_DIRTY_PIXELS_PER_BIT)
+#define VNC_MAX_HEIGHT 2048
+
 /* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */
 #define VNC_DIRTY_BITS (VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT)
 
@@ -126,7 +127,8 @@ typedef struct VncRectStat VncRectStat;
 struct VncSurface
 {
     struct timeval last_freq_check;
-    DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT], VNC_MAX_WIDTH / 16);
+    DECLARE_BITMAP(dirty[VNC_MAX_HEIGHT],
+                   VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT);
     VncRectStat stats[VNC_STAT_ROWS][VNC_STAT_COLS];
     pixman_image_t *fb;
     pixman_format_code_t format;
@@ -292,7 +294,7 @@ struct VncState
     bool websocket;
 #endif /* CONFIG_VNC_WS */
 
-    QObject *info;
+    VncClientInfo *info;
 
     Buffer output;
     Buffer input;