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/*
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;
#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 {
/* 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;
/* keep track of the assoc_ctx's */
struct {
uint32_t our_ctx;
uint32_t peer_ctx;
} assoc_ctx;
/*
* the client socket to the partner,
* NULL if not yet connected
*/
struct wrepl_socket *sock;
};
enum winsrepl_partner_type {
WINSREPL_PARTNER_NONE = 0x0,
WINSREPL_PARTNER_PULL = 0x1,
WINSREPL_PARTNER_PUSH = 0x2,
WINSREPL_PARTNER_BOTH = (WINSREPL_PARTNER_PULL | WINSREPL_PARTNER_PUSH)
};
#define WINSREPL_DEFAULT_PULL_INTERVAL (30*60)
#define WINSREPL_DEFAULT_PULL_RETRY_INTERVAL (30)
#define WINSREPL_DEFAULT_PUSH_CHANGE_COUNT (0)
/*
this represents one of our configured partners
*/
struct wreplsrv_partner {
struct wreplsrv_partner *prev,*next;
/* our global service context */
struct wreplsrv_service *service;
/* the netbios name of the partner, mostly just for debugging */
const char *name;
/* the ip-address of the partner */
const char *address;
/*
* as wins partners identified by ip-address, we need to use a specific source-ip
* when we want to connect to the partner
*/
const char *our_address;
/* the type of the partner, pull, push or both */
enum winsrepl_partner_type type;
/* pull specific options */
struct {
/* the interval between 2 pull replications to the partner */
uint32_t interval;
/* the retry_interval if a pull cycle failed to the partner */
uint32_t retry_interval;
/* the error count till the last success */
uint32_t error_count;
/* the status of the last pull cycle */
NTSTATUS last_status;
/* this is a list of each wins_owner the partner knows about */
struct wreplsrv_owner *table;
/* the outgoing connection to the partner */
struct wreplsrv_out_connection *wreplconn;
/* the current pending pull cycle request */
struct composite_context *creq;
/* the pull cycle io params */
struct wreplsrv_pull_cycle_io *cycle_io;
/* the current timed_event to the next pull cycle */
struct timed_event *te;
} pull;
/* push specific options */
struct {
/* change count till push notification */
uint32_t change_count;
/* the status of the last push cycle */
NTSTATUS last_status;
/* the outgoing connection to the partner */
struct wreplsrv_out_connection *wreplconn;
/* the current push notification */
struct composite_context *creq;
/* the pull cycle io params */
struct wreplsrv_push_notify_io *notify_io;
/* the current timed_event to the next push notify */
struct timed_event *te;
} push;
};
struct wreplsrv_owner {
struct wreplsrv_owner *prev,*next;
/* this hold the owner_id (address), min_version, max_version and partner_type */
struct wrepl_wins_owner owner;
/* can be NULL if this owner isn't a configure partner */
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;
/* this is a list of each wins_owner we know about in our database */
struct wreplsrv_owner *table;
};
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