From b708e87a63947bc963d17592ac88022b708816c3 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Sun, 10 Apr 2005 23:09:38 +0000
Subject: r6288: the nbt dgram server now responds to GETDC requests. It works
 with our test suite, but doesn't yet seem to satisfy a nt4 client. I'm
 investigating. (This used to be commit
 406217262dff5adb5d0cb0028198e08f66cc85f4)

---
 source4/nbt_server/dgram/netlogon.c | 65 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 64 insertions(+), 1 deletion(-)

(limited to 'source4/nbt_server/dgram/netlogon.c')

diff --git a/source4/nbt_server/dgram/netlogon.c b/source4/nbt_server/dgram/netlogon.c
index 471145c4ac..e013742f0a 100644
--- a/source4/nbt_server/dgram/netlogon.c
+++ b/source4/nbt_server/dgram/netlogon.c
@@ -26,6 +26,44 @@
 #include "smbd/service_task.h"
 #include "lib/socket/socket.h"
 
+/*
+  reply to a GETDC request
+ */
+static void nbtd_netlogon_getdc(struct dgram_mailslot_handler *dgmslot, 
+				struct nbt_dgram_packet *packet, 
+				const char *src_address, int src_port,
+				struct nbt_netlogon_packet *netlogon)
+{
+	struct nbt_name *name = &packet->data.msg.dest_name;
+	struct nbt_netlogon_packet reply;
+	struct nbt_netlogon_response_from_pdc *pdc;
+
+	/* only answer getdc requests on the PDC or LOGON names */
+	if (name->type != NBT_NAME_PDC && name->type != NBT_NAME_LOGON) {
+		return;
+	}
+
+	/* setup a GETDC reply */
+	reply.command = NETLOGON_RESPONSE_FROM_PDC;
+	pdc = &reply.req.response;
+
+	pdc->pdc_name         = lp_netbios_name();
+	pdc->unicode_pdc_name = pdc->pdc_name;
+	pdc->domain_name      = lp_workgroup();
+	pdc->nt_version       = 1;
+	pdc->lmnt_token       = 0xFFFF;
+	pdc->lm20_token       = 0xFFFF;
+
+
+	packet->data.msg.dest_name.type = 0;
+
+	dgram_mailslot_netlogon_reply(dgmslot->dgmsock, 
+				      packet, 
+				      netlogon->req.pdc.mailslot_name,
+				      &reply);
+}
+
+
 /*
   handle incoming netlogon mailslot requests
 */
@@ -34,16 +72,41 @@ void nbtd_mailslot_netlogon_handler(struct dgram_mailslot_handler *dgmslot,
 				    const char *src_address, int src_port)
 {
 	NTSTATUS status = NT_STATUS_NO_MEMORY;
+	struct nbtd_interface *iface = 
+		talloc_get_type(dgmslot->private, struct nbtd_interface);
 	struct nbt_netlogon_packet *netlogon = 
 		talloc(dgmslot, struct nbt_netlogon_packet);
+	struct nbtd_iface_name *iname;
+	struct nbt_name *name = &packet->data.msg.dest_name;
+
 	if (netlogon == NULL) goto failed;
 
-	DEBUG(2,("netlogon request from %s:%d\n", src_address, src_port));
+	/*
+	  see if the we are listening on the destination netbios name
+	*/
+	iname = nbtd_find_iname(iface, name, 0);
+	if (iname == NULL) {
+		status = NT_STATUS_BAD_NETWORK_NAME;
+		goto failed;
+	}
+
+	DEBUG(2,("netlogon request to %s from %s:%d\n", 
+		 nbt_name_string(netlogon, name), src_address, src_port));
 	status = dgram_mailslot_netlogon_parse(dgmslot, netlogon, packet, netlogon);
 	if (!NT_STATUS_IS_OK(status)) goto failed;
 
 	NDR_PRINT_DEBUG(nbt_netlogon_packet, netlogon);
 
+	switch (netlogon->command) {
+	case NETLOGON_QUERY_FOR_PDC:
+		nbtd_netlogon_getdc(dgmslot, packet, src_address, src_port, netlogon);
+		break;
+	default:
+		DEBUG(2,("unknown netlogon op %d from %s:%d\n", 
+			 netlogon->command, src_address, src_port));
+		break;
+	}
+
 	talloc_free(netlogon);
 	return;
 
-- 
cgit