Fixes for running X Test Suite via lbxproxy:XORG-6_8_99_903XORG-6_8_99_902XORG-6_8_99_901

- Failure for Xproto/GetProperty [Sun bug #4432077]
- lbxproxy crash on Xlib5/XGetWindowProperty [Sun bug #4416964]
- lbxproxy crash on Xlib7/XCreateColormap-10 [Sun bug #4431077]
- lbxproxy crash on Xproto tests for bad length [Sun bug #4414232] (Derek
    Wang - Sun Microsystems)

4 files changed, 31 insertions, 6 deletions

diff --git a/di/cmap.c b/di/cmap.c
index 88c4553..1102ab5 100644
--- a/di/cmap.c
+++ b/di/cmap.c
@@ -1,4 +1,5 @@
 /* $Xorg: cmap.c,v 1.5 2001/02/09 02:05:31 xorgcvs Exp $ */
+/* $XdotOrg: $ */
 
 /*
 Copyright 1996, 1998  The Open Group
@@ -968,6 +969,8 @@ create_colormap(cmap, visual)
     Pixel     **pptr;
 
     pvis = GetVisual(visual);
+    if (!pvis)
+	return ((ColormapPtr) NULL);
     csize = pvis->colormapEntries;
     tsize = (csize * sizeof(Entry)) + (MAXCLIENTS * sizeof(Pixel *)) +
 	(MAXCLIENTS * sizeof(int));
diff --git a/di/props.c b/di/props.c
index 9f94bc4..296cdd1 100644
--- a/di/props.c
+++ b/di/props.c
@@ -1,4 +1,5 @@
 /* $Xorg: props.c,v 1.4 2001/02/09 02:05:32 xorgcvs Exp $ */
+/* $XdotOrg: $ */
 /*
 
 Copyright 1998  The Open Group
@@ -254,6 +255,8 @@ ProcLBXGetProperty(client)
     REQUEST(xGetPropertyReq);
     ReplyStuffPtr nr;
 
+    REQUEST_SIZE_MATCH(xGetPropertyReq);
+
     nr = NewReply(client, client->server->lbxReq, X_LbxGetProperty,
 		  GetLbxGetPropertyReply);
     if (!nr)
@@ -289,7 +292,7 @@ GetLbxGetPropertyReply(client, nr, data)
     PropertyTagDataRec ptd;
     PropertyTagDataPtr ptdp;
     pointer     pdata = NULL;
-    char	*sdata;
+    char	*sdata = NULL;
     char        n;
     xGetPropertyReply reply;
     CARD32	tag, nItems, type, bytesAfter;
@@ -387,15 +390,28 @@ GetLbxGetPropertyReply(client, nr, data)
 	len = min(len, nr->request_info.lbxgetprop.length << 2);
 	reply.bytesAfter = (ptdp->length -
 			    (len + (nr->request_info.lbxgetprop.offset << 2)));
-	sdata = sdata + (nr->request_info.lbxgetprop.offset << 2);
+	if (sdata)
+	    sdata = sdata + (nr->request_info.lbxgetprop.offset << 2);
     }
 
+    if (ptdp->length) {
+	len = ptdp->length - (nr->request_info.lbxgetprop.offset << 2);
+	len = min(len, nr->request_info.lbxgetprop.length << 2);
+	reply.bytesAfter = (ptdp->length -
+			    (len + (nr->request_info.lbxgetprop.offset << 2)));
+    } else {
+	len = 0;
+	reply.bytesAfter = rep->bytesAfter;
+    }
+    if(sdata)
+        sdata = sdata + (nr->request_info.lbxgetprop.offset << 2);
+    
     reply.type = X_Reply;
     reply.sequenceNumber = rep->sequenceNumber;
     reply.format = ptdp->format;
     reply.length = (len + 3) >> 2;
     reply.propertyType = ptdp->type;
-    if (len)
+    if (len && ptdp->format)
 	reply.nItems = len / (ptdp->format >> 3);
     else
 	reply.nItems = 0;
diff --git a/include/misc.h b/include/misc.h
index 3ead872..3b7ee48 100644
--- a/include/misc.h
+++ b/include/misc.h
@@ -1,4 +1,5 @@
 /* $Xorg: misc.h,v 1.4 2001/02/09 02:05:32 xorgcvs Exp $ */
+/* $XdotOrg: $ */
 
 /*
 
@@ -111,4 +112,8 @@ extern int MaxClients;
 #define REQUEST(type) \
 	register type *stuff = (type *)client->requestBuffer
 
+#define REQUEST_SIZE_MATCH(req) \
+    if ((sizeof(req) >> 2) != client->req_len) \
+	return (BadLength)
+
 #endif
diff --git a/os/io.c b/os/io.c
index 25df337..56604f8 100644
--- a/os/io.c
+++ b/os/io.c
@@ -1,4 +1,5 @@
 /* $Xorg: io.c,v 1.6 2001/02/09 02:05:33 xorgcvs Exp $ */
+/* $XdotOrg: $ */
 /***********************************************************
 
 Copyright 1987, 1989, 1998  The Open Group
@@ -112,13 +113,13 @@ StandardRequestLength(req,client,got,partp)
 {
     int	    len;
     
-    if (!req)
-	req = (xReq *) client->requestBuffer;
     if (got < sizeof (xReq))
     {
 	*partp = TRUE;
 	return sizeof (xReq);
     }
+    if (!req)
+	req = (xReq *) client->requestBuffer;
     len = get_req_len(req,client);
     if (len > MAXBUFSIZE)
     {
@@ -984,7 +985,7 @@ StandardWriteToClient (who, count, buf)
     register ConnectionOutputPtr oco = oc->output;
     int padBytes;
 
-    if (!count)
+    if (!count || !buf)
 	return(0);
 
     if (!oco)