samba-mirror/source4/wrepl_server/wrepl_server.h

/* 
   Unix SMB/CIFS implementation.
   
   WINS Replication server
   
   Copyright (C) Stefan Metzmacher	2005
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

struct wreplsrv_service;
struct wreplsrv_in_connection;
struct wreplsrv_out_connection;
struct wreplsrv_partner;
struct wreplsrv_pull_partner_item;
struct wreplsrv_push_partner_item;

#define WREPLSRV_VALID_ASSOC_CTX	0x12345678
#define WREPLSRV_INVALID_ASSOC_CTX	0x0000000a

/*
  state of an incoming wrepl call
*/
struct wreplsrv_in_call {
	struct wreplsrv_in_connection *wreplconn;
	struct wrepl_packet req_packet;
	struct wrepl_packet rep_packet;
};

/*
  state of an incoming wrepl connection
*/
struct wreplsrv_in_connection {
	struct wreplsrv_in_connection *prev,*next;
	struct stream_connection *conn;

	/* our global service context */
	struct wreplsrv_service *service;

	/*
	 * the partner that connects us,
	 * can be NULL, when we got a connection
	 * from an unknown address
	 */
	struct wreplsrv_partner *partner;

	/*
	 * we need to take care of our own ip address,
	 * as this is the WINS-Owner ID the peer expect
	 * from us.
	 */
	const char *our_ip;

	/* keep track of the assoc_ctx's */
	struct {
		BOOL stopped;
		uint32_t our_ctx;
		uint32_t peer_ctx;
	} assoc_ctx;

	/* the partial input on the connection */
	DATA_BLOB partial;
	size_t partial_read;

	/*
	 * are we currently processing a request?
	 * this prevents loops, with half async code
	 */
	BOOL processing;

	/*
	 * if this is set we no longer accept incoming packets
	 * and terminate the connection after we have send all packets
	 */
	BOOL terminate;

	/* the list of outgoing DATA_BLOB's that needs to be send */
	struct data_blob_list_item *send_queue;
};

/*
  state of an outcoming wrepl connection
*/
struct wreplsrv_out_connection {
	struct wreplsrv_partner *partner;
};

/*
  state of the whole wrepl service
*/
struct wreplsrv_service {
	/* the whole wrepl service is in one task */
	struct task_server *task;

	/* the winsdb handle */
	struct ldb_context *wins_db;

	/* all incoming connections */
	struct wreplsrv_in_connection *in_connections;

	/* all partners (pull and push) */
	struct wreplsrv_partner *partners;

	/* all pull partners */
	struct wreplsrv_pull_partner *pull_partners;

	/* all push partners */
	struct wreplsrv_push_partner *push_partners;
};