Hidden bug in our tcp/ip stack, at shutdown api the so can be NULL if that happen...

Arty can u look if this changes is right if not revert it. This changes was tested in fireforx at http://www.mirc.com/get.html and try d/l mirc. This patch do not make firefox bsod, instead it genrate a long crash log at serial debug.

svn path=/trunk/; revision=22106

diff --git a/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c b/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c
index e951922..05997ff 100644 (file)
--- a/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c
+++ b/reactos/lib/drivers/oskittcp/oskittcp/uipc_socket.c
@@ -827,6 +827,19 @@ soshutdown(so, how)
        register struct socket *so;
        register int how;
 {
+    if (so == NULL)
+    {
+       register struct protosw *pr = NULL;
+
+       how++;
+       if (how & FREAD)
+               sorflush(so);
+       if (how & FWRITE)
+               return ((*pr->pr_usrreq)(so, PRU_SHUTDOWN,
+                   (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0));
+       return (0);
+    }
+    
        register struct protosw *pr = so->so_proto;
 
        how++;