make cut text handling using a hook

libvncclient/rfbproto.c

@@ -1019,10 +1019,6 @@ SendClientCutText(rfbClient* client, char *str, int len)
 {
   rfbClientCutTextMsg cct;
 
-  if (client->serverCutText)
-    free(client->serverCutText);
-  client->serverCutText = NULL;
-
   if (!SupportsClient2Server(client, rfbClientCutText)) return TRUE;
 
   cct.type = rfbClientCutText;
@@ -1481,23 +1477,25 @@ HandleRFBServerMessage(rfbClient* client)
 
   case rfbServerCutText:
   {
+    char *buffer;
+
     if (!ReadFromRFBServer(client, ((char *)&msg) + 1,
 			   sz_rfbServerCutTextMsg - 1))
       return FALSE;
 
     msg.sct.length = rfbClientSwap32IfLE(msg.sct.length);
 
-    if (client->serverCutText)
-      free(client->serverCutText);
+    buffer = malloc(msg.sct.length+1);
 
-    client->serverCutText = malloc(msg.sct.length+1);
-
-    if (!ReadFromRFBServer(client, client->serverCutText, msg.sct.length))
+    if (!ReadFromRFBServer(client, buffer, msg.sct.length))
       return FALSE;
 
-    client->serverCutText[msg.sct.length] = 0;
+    buffer[msg.sct.length] = 0;
+
+    if (client->GotXCutText)
+      client->GotXCutText(client, buffer, msg.sct.length);
 
-    client->newServerCutText = TRUE;
+    free(buffer);
 
     break;
   }

rfb/rfbclient.h

@@ -104,6 +104,7 @@ typedef void (*SoftCursorUnlockScreenProc)(struct _rfbClient* client);
 typedef void (*GotFrameBufferUpdateProc)(struct _rfbClient* client, int x, int y, int w, int h);
 typedef char* (*GetPasswordProc)(struct _rfbClient* client);
 typedef rfbBool (*MallocFrameBufferProc)(struct _rfbClient* client);
+typedef void (*GotXCutTextProc)(struct _rfbClient* client, const char *text, int textlen);
 typedef void (*BellProc)(struct _rfbClient* client);
 
 typedef struct _rfbClient {
@@ -136,8 +137,6 @@ typedef struct _rfbClient {
 	char *desktopName;
 	rfbPixelFormat format;
 	rfbServerInitMsg si;
-	char *serverCutText;
-	rfbBool newServerCutText;
 
 	/* sockets.c */
 #define RFB_BUF_SIZE 8192
@@ -220,6 +219,7 @@ typedef struct _rfbClient {
 	/* the pointer returned by GetPassword will be freed after use! */
 	GetPasswordProc GetPassword;
 	MallocFrameBufferProc MallocFrameBuffer;
+	GotXCutTextProc GotXCutText;
 	BellProc Bell;
 
 	/* Which messages are supported by the server