From 16bf14adf1b78f7ec4d3d267d500258fdf399627 Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Tue, 16 Dec 1997 09:20:34 +0000
Subject: Added Lanman announce patch from Jacco de Leeuw <leeuw@wins.uva.nl>.
 Also added code to stop old Samba servers that announce the workgroup name as
 master browser name when they are a local master browser. Jeremy. (This used
 to be commit 3605da055737e2cc0fbfffe7772721943a5be8bd)

---
 source3/nmbd/nmbd_packets.c | 56 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

(limited to 'source3/nmbd/nmbd_packets.c')

diff --git a/source3/nmbd/nmbd_packets.c b/source3/nmbd/nmbd_packets.c
index 43249cc0a3..4fb0543967 100644
--- a/source3/nmbd/nmbd_packets.c
+++ b/source3/nmbd/nmbd_packets.c
@@ -1023,6 +1023,56 @@ command code %d from %s IP %s to %s\n",
   } 
 }
 
+/****************************************************************************
+ Dispatch a LanMan browse frame from port 138 to the correct processing function.
+****************************************************************************/
+
+void process_lanman_packet(struct packet_struct *p, char *buf,int len)
+{
+  struct dgram_packet *dgram = &p->packet.dgram;
+  int command = SVAL(buf,0);
+  struct subnet_record *subrec = find_subnet_for_dgram_browse_packet(p);
+
+  /* Drop the packet if it's a different NetBIOS scope, or
+     the source is from one of our names. */
+
+  if (!strequal(dgram->dest_name.scope,scope ))
+  {
+    DEBUG(7,("process_lanman_packet: Discarding datagram from IP %s. Scope (%s) \
+mismatch with our scope (%s).\n", inet_ntoa(p->ip), dgram->dest_name.scope, scope));
+    return;
+  }
+
+  if (is_myname(dgram->source_name.name))
+  {
+    DEBUG(0,("process_lanman_packet: Discarding datagram from IP %s. Source name \
+%s is one of our names !\n", inet_ntoa(p->ip), namestr(&dgram->source_name)));
+    return;
+  }
+
+  switch (command)
+  {
+    case ANN_HostAnnouncement:
+    {
+      debug_browse_data(buf, len);
+      process_lm_host_announce(subrec, p, buf+1);
+      break;
+    }
+    case ANN_AnnouncementRequest:
+    {
+      process_lm_announce_request(subrec, p, buf+1);
+      break;
+    }
+    default:
+    {
+      DEBUG(0,("process_lanman_packet: On subnet %s ignoring browse packet \
+command code %d from %s IP %s to %s\n",
+            subrec->subnet_name, command, namestr(&dgram->source_name),
+            inet_ntoa(p->ip), namestr(&dgram->dest_name)));
+    }
+  }
+}
+
 /****************************************************************************
   Determine if a packet is for us on port 138. Note that to have any chance of
   being efficient we need to drop as many packets as possible at this
@@ -1100,6 +1150,12 @@ static void process_dgram(struct packet_struct *p)
     return;
   }
 
+  /* Datagram packet received for the LAN Manager mailslot */
+  if (strequal(smb_buf(buf),LANMAN_MAILSLOT)) {
+    process_lanman_packet(p,buf2,len);
+    return;
+  }
+
   /* Datagram packet received for the domain logon mailslot */
   if (strequal(smb_buf(buf),NET_LOGON_MAILSLOT))
   {
-- 
cgit