r10491: First step towards wbinfo -t: This issues a name request for the primary

domain and gets the DC's name via a mailslot call.

Metze, I renamed wbsrv_queue_reply to wbsrv_send_reply in accordance with
irpc_send_reply. Having _queue_ here and _send_ there is a bit confusing. And
as everything is async anyway, the semantics should not be too much of a
problem.

Volker
(This used to be commit 4637964b19c6e9f7d201b287e2d409d029fced01)

1 files changed, 119 insertions, 0 deletions

diff --git a/source4/nbt_server/nbt_server.c b/source4/nbt_server/nbt_server.c
index 2119610988..83a7ae8a2f 100644
--- a/source4/nbt_server/nbt_server.c
+++ b/source4/nbt_server/nbt_server.c
@@ -43,6 +43,116 @@ static NTSTATUS nbtd_information(struct irpc_message *msg,
 	return NT_STATUS_OK;
 }
 
+struct getdc_state {
+	struct irpc_message *msg;
+	struct nbtd_getdcname *req;
+};
+
+static void getdc_recv_ntlogon_reply(struct dgram_mailslot_handler *dgmslot, 
+				     struct nbt_dgram_packet *packet, 
+				     const char *src_address, int src_port)
+{
+	struct getdc_state *s =
+		talloc_get_type(dgmslot->private, struct getdc_state);
+
+	struct nbt_ntlogon_packet ntlogon;
+	NTSTATUS status;
+
+	status = dgram_mailslot_ntlogon_parse(dgmslot, packet, packet,
+					      &ntlogon);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(5, ("dgram_mailslot_ntlogon_parse failed: %s\n",
+			  nt_errstr(status)));
+		goto done;
+	}
+
+	status = NT_STATUS_NO_LOGON_SERVERS;
+
+	DEBUG(10, ("reply: command=%d\n", ntlogon.command));
+
+	switch (ntlogon.command) {
+	case NTLOGON_SAM_LOGON:
+		DEBUG(0, ("Huh -- got NTLOGON_SAM_LOGON as reply\n"));
+		break;
+	case NTLOGON_SAM_LOGON_REPLY:
+		DEBUG(10, ("NTLOGON_SAM_LOGON_REPLY: server: %s, user: %s, "
+			   "domain: %s\n", ntlogon.req.reply.server,
+			   ntlogon.req.reply.user_name,
+			   ntlogon.req.reply.domain));
+		s->req->out.dcname =
+			talloc_strdup(s->req, ntlogon.req.reply.server);
+		if (s->req->out.dcname == NULL) {
+			DEBUG(0, ("talloc failed\n"));
+			status = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+		status = NT_STATUS_OK;
+		break;
+	default:
+		DEBUG(0, ("Got unknown packet: %d\n", ntlogon.command));
+		break;
+	}
+
+ done:
+	irpc_send_reply(s->msg, status);
+}
+
+static NTSTATUS nbtd_getdcname(struct irpc_message *msg, 
+			       struct nbtd_getdcname *req)
+{
+	struct nbtd_server *server =
+		talloc_get_type(msg->private, struct nbtd_server);
+
+	struct getdc_state *s;
+	struct nbt_ntlogon_packet p;
+	struct nbt_ntlogon_sam_logon *r;
+	struct nbt_dgram_socket *sock;
+	struct nbt_name src, dst;
+	struct dgram_mailslot_handler *handler;
+	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+
+	DEBUG(0, ("nbtd_getdcname called\n"));
+
+	sock = server->interfaces[0].dgmsock;
+
+	s = talloc(msg, struct getdc_state);
+        NT_STATUS_HAVE_NO_MEMORY(s);
+
+	s->msg = msg;
+	s->req = req;
+	
+	handler = dgram_mailslot_temp(sock, NBT_MAILSLOT_GETDC,
+				      getdc_recv_ntlogon_reply, s);
+        NT_STATUS_HAVE_NO_MEMORY(handler);
+	
+	ZERO_STRUCT(p);
+	p.command = NTLOGON_SAM_LOGON;
+	r = &p.req.logon;
+	r->request_count = 0;
+	r->computer_name = req->in.my_computername;
+	r->user_name = req->in.my_accountname;
+	r->mailslot_name = handler->mailslot_name;
+	r->acct_control = req->in.account_control;
+	r->sid = *req->in.domain_sid;
+	r->nt_version = 1;
+	r->lmnt_token = 0xffff;
+	r->lm20_token = 0xffff;
+
+	make_nbt_name_client(&src, req->in.my_computername);
+	make_nbt_name(&dst, req->in.domainname, 0x1c);
+
+	status = dgram_mailslot_ntlogon_send(sock, DGRAM_DIRECT_GROUP,
+					     &dst, req->in.ip_address, 138,
+					     &src, &p);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("dgram_mailslot_ntlogon_send failed: %s\n",
+			  nt_errstr(status)));
+		return status;
+	}
+
+	msg->defer_reply = True;
+	return NT_STATUS_OK;
+}
 
 
 /*
@@ -91,6 +201,15 @@ static void nbtd_task_init(struct task_server *task)
 		return;
 	}
 
+	/* Setup handler for getdcname call */
+	status = IRPC_REGISTER(task->msg_ctx, irpc, NBTD_GETDCNAME,
+			       nbtd_getdcname, nbtsrv);
+	if (!NT_STATUS_IS_OK(status)) {
+		task_server_terminate(task, "nbtd failed to setup getdcname "
+				      "handler");
+		return;
+	}
+
 	/* start the process of registering our names on all interfaces */
 	nbtd_register_names(nbtsrv);