389-ds-base/ldap/servers/plugins/replication/repl5.h

/** BEGIN COPYRIGHT BLOCK
 * 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; version 2 of the License.
 * 
 * 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., 59 Temple
 * Place, Suite 330, Boston, MA 02111-1307 USA.
 * 
 * In addition, as a special exception, Red Hat, Inc. gives You the additional
 * right to link the code of this Program with code not covered under the GNU
 * General Public License ("Non-GPL Code") and to distribute linked combinations
 * including the two, subject to the limitations in this paragraph. Non-GPL Code
 * permitted under this exception must only link to the code of this Program
 * through those well defined interfaces identified in the file named EXCEPTION
 * found in the source code files (the "Approved Interfaces"). The files of
 * Non-GPL Code may instantiate templates or use macros or inline functions from
 * the Approved Interfaces without causing the resulting work to be covered by
 * the GNU General Public License. Only Red Hat, Inc. may make changes or
 * additions to the list of Approved Interfaces. You must obey the GNU General
 * Public License in all respects for all of the Program code and other code used
 * in conjunction with the Program except the Non-GPL Code covered by this
 * exception. If you modify this file, you may extend this exception to your
 * version of the file, but you are not obligated to do so. If you do not wish to
 * provide this exception without modification, you must delete this exception
 * statement from your version and license this file solely under the GPL without
 * exception. 
 * 
 * 
 * Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
 * Copyright (C) 2010 Red Hat, Inc.
 * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
 * All rights reserved.
 * END COPYRIGHT BLOCK **/

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif


/* repl5.h - 5.0 replication header */
 
#ifndef _REPL5_H_
#define _REPL5_H_

#include <limits.h>
#include <time.h>
#include <stdio.h>
#include <string.h>
#ifndef _WIN32
#include <sys/param.h>
#endif /* _WIN32 */

#include "portable.h" /* GGOODREPL - is this cheating? */
#include "repl_shared.h"
#include "llist.h"
#include "repl5_ruv.h"
#include "cl4.h"

#define REPLICA_TYPE_WINDOWS 1
#define REPLICA_TYPE_MULTIMASTER 0
#define REPL_DIRSYNC_CONTROL_OID "1.2.840.113556.1.4.841"
#define REPL_RETURN_DELETED_OBJS_CONTROL_OID "1.2.840.113556.1.4.417"
#define REPL_WIN2K3_AD_OID "1.2.840.113556.1.4.1670"

/* DS 5.0 replication protocol OIDs */
#define REPL_START_NSDS50_REPLICATION_REQUEST_OID "2.16.840.1.113730.3.5.3"
#define REPL_END_NSDS50_REPLICATION_REQUEST_OID "2.16.840.1.113730.3.5.5"
#define REPL_NSDS50_REPLICATION_ENTRY_REQUEST_OID "2.16.840.1.113730.3.5.6"
#define REPL_NSDS50_REPLICATION_RESPONSE_OID "2.16.840.1.113730.3.5.4"
#define REPL_NSDS50_UPDATE_INFO_CONTROL_OID    "2.16.840.1.113730.3.4.13"
#define REPL_NSDS50_INCREMENTAL_PROTOCOL_OID "2.16.840.1.113730.3.6.1"
#define REPL_NSDS50_TOTAL_PROTOCOL_OID "2.16.840.1.113730.3.6.2"
/* DS7.1 introduces pipelineing in the protocol : really not much different to the 5.0 
 * protocol, but enough change to make it unsafe to interoperate the two. So we define 
 * new OIDs for 7.1 here. The supplier server looks for these on the consumer and 
 * if they're not there it falls back to the older 5.0 non-pipelined protocol */
#define REPL_NSDS71_INCREMENTAL_PROTOCOL_OID "2.16.840.1.113730.3.6.4"
#define REPL_NSDS71_TOTAL_PROTOCOL_OID "2.16.840.1.113730.3.6.3"
/* The new protocol OIDs above do not help us with determining if a consumer
 * Supports them or not. That's because they're burried inside the start replication 
 * extended operation, and are not visible in the support controls and operations list 
 * So, we add a new extended operation for the 7.1 total protocol. This is partly because
 * the total protocol is slightly different (no LDAP_BUSY allowed in 7.1) and partly
 * because we need a handy way to spot the difference between a pre-7.1 and post-7.0 
 * consumer at the supplier */
#define REPL_NSDS71_REPLICATION_ENTRY_REQUEST_OID "2.16.840.1.113730.3.5.9"
/* DS9.0 introduces replication session callbacks that can send/receive
 * arbitrary data when starting a replication session.  This requires a
 * new set of start and response extops. */
#define REPL_START_NSDS90_REPLICATION_REQUEST_OID "2.16.840.1.113730.3.5.12"
#define REPL_NSDS90_REPLICATION_RESPONSE_OID "2.16.840.1.113730.3.5.13"


/* DS 5.0 replication protocol error codes */
#define NSDS50_REPL_REPLICA_READY 0x00 /* Replica ready, go ahead */
#define NSDS50_REPL_REPLICA_BUSY 0x01 /* Replica busy, try later */
#define NSDS50_REPL_EXCESSIVE_CLOCK_SKEW 0x02 /* Supplier clock too far ahead */
#define NSDS50_REPL_PERMISSION_DENIED 0x03 /* Bind DN not allowed to send updates */
#define NSDS50_REPL_DECODING_ERROR 0x04 /* Consumer couldn't decode extended operation */
#define NSDS50_REPL_UNKNOWN_UPDATE_PROTOCOL 0x05 /* Consumer doesn't understand suplier's update protocol */
#define NSDS50_REPL_NO_SUCH_REPLICA 0x06 /* Consumer holds no such replica */
#define NSDS50_REPL_BELOW_PURGEPOINT 0x07 /* Supplier provided a CSN below the consumer's purge point */
#define NSDS50_REPL_INTERNAL_ERROR 0x08 /* Something bad happened on consumer */
#define NSDS50_REPL_REPLICA_RELEASE_SUCCEEDED 0x09 /* Replica released successfully */
#define NSDS50_REPL_LEGACY_CONSUMER 0x0A    /* replica is a legacy consumer */
#define NSDS50_REPL_REPLICAID_ERROR 0x0B	/* replicaID doesn't seem to be unique */
#define NSDS50_REPL_DISABLED 0x0C	/* replica suffix is disabled */
#define NSDS50_REPL_UPTODATE 0x0D	/* replica is uptodate */
#define NSDS50_REPL_BACKOFF 0x0E        /* replica wants master to go into backoff mode */
#define NSDS50_REPL_REPLICA_NO_RESPONSE 0xff /* No response received */

/* Protocol status */
#define PROTOCOL_STATUS_UNKNOWN 701
#define PROTOCOL_STATUS_INCREMENTAL_AWAITING_CHANGES 702
#define PROTOCOL_STATUS_INCREMENTAL_ACQUIRING_REPLICA 703
#define PROTOCOL_STATUS_INCREMENTAL_RELEASING_REPLICA 704
#define PROTOCOL_STATUS_INCREMENTAL_SENDING_UPDATES 705
#define PROTOCOL_STATUS_INCREMENTAL_BACKING_OFF 706
#define PROTOCOL_STATUS_INCREMENTAL_NEEDS_TOTAL_UPDATE 707
#define PROTOCOL_STATUS_INCREMENTAL_FATAL_ERROR 708
#define PROTOCOL_STATUS_TOTAL_ACQUIRING_REPLICA 709
#define PROTOCOL_STATUS_TOTAL_RELEASING_REPLICA 710
#define PROTOCOL_STATUS_TOTAL_SENDING_DATA 711

/* To Allow Consumer Initialisation when adding an agreement - */
#define STATE_PERFORMING_TOTAL_UPDATE 501
#define STATE_PERFORMING_INCREMENTAL_UPDATE 502

#define MAX_NUM_OF_MASTERS		64
#define REPL_SESSION_ID_SIZE	64

/* Attribute names for replication agreement attributes */
extern const char *type_nsds5ReplicaHost;
extern const char *type_nsds5ReplicaPort;
extern const char *type_nsds5TransportInfo;
extern const char *type_nsds5ReplicaBindDN;
extern const char *type_nsds5ReplicaCredentials;
extern const char *type_nsds5ReplicaBindMethod;
extern const char *type_nsds5ReplicaRoot;
extern const char *type_nsds5ReplicatedAttributeList;
extern const char *type_nsds5ReplicaUpdateSchedule;
extern const char *type_nsds5ReplicaInitialize;
extern const char *type_nsds5ReplicaTimeout;
extern const char *type_nsds5ReplicaBusyWaitTime;
extern const char *type_nsds5ReplicaSessionPauseTime;

/* Attribute names for windows replication agreements */
extern const char *type_nsds7WindowsReplicaArea;
extern const char *type_nsds7DirectoryReplicaArea;
extern const char *type_nsds7CreateNewUsers;
extern const char *type_nsds7CreateNewGroups;
extern const char *type_nsds7DirsyncCookie;
extern const char *type_nsds7WindowsDomain;
extern const char *type_winSyncInterval;
extern const char *type_oneWaySync;

/* To Allow Consumer Initialisation when adding an agreement - */
extern const char *type_nsds5BeginReplicaRefresh;

/* replica related attributes */
extern const char *attr_replicaId;
extern const char *attr_replicaRoot;
extern const char *attr_replicaType;
extern const char *attr_replicaBindDn;
extern const char *attr_state;
extern const char *attr_flags;
extern const char *attr_replicaName;
extern const char *attr_replicaReferral;
extern const char *type_ruvElement;
extern const char *type_replicaPurgeDelay;
extern const char *type_replicaChangeCount;
extern const char *type_replicaTombstonePurgeInterval;
extern const char *type_replicaLegacyConsumer;
extern const char *type_ruvElementUpdatetime;

/* multimaster plugin points */
int multimaster_preop_bind (Slapi_PBlock *pb); 
int multimaster_preop_add (Slapi_PBlock *pb);
int multimaster_preop_delete (Slapi_PBlock *pb);
int multimaster_preop_modify (Slapi_PBlock *pb);
int multimaster_preop_modrdn (Slapi_PBlock *pb);
int multimaster_preop_search (Slapi_PBlock *pb);
int multimaster_preop_compare (Slapi_PBlock *pb);
int multimaster_bepreop_add (Slapi_PBlock *pb);
int multimaster_bepreop_delete (Slapi_PBlock *pb);
int multimaster_bepreop_modify (Slapi_PBlock *pb);
int replica_ruv_smods_for_op (Slapi_PBlock *pb, char **uniqueid,
	Slapi_Mods **smods);
int multimaster_bepreop_modrdn (Slapi_PBlock *pb);
int multimaster_bepostop_modrdn (Slapi_PBlock *pb);
int multimaster_bepostop_delete (Slapi_PBlock *pb);
int multimaster_postop_bind (Slapi_PBlock *pb);
int multimaster_postop_add (Slapi_PBlock *pb);
int multimaster_postop_delete (Slapi_PBlock *pb);
int multimaster_postop_modify (Slapi_PBlock *pb);
int multimaster_postop_modrdn (Slapi_PBlock *pb);
int multimaster_betxnpostop_modrdn (Slapi_PBlock *pb);
int multimaster_betxnpostop_delete (Slapi_PBlock *pb);
int multimaster_betxnpostop_add (Slapi_PBlock *pb);
int multimaster_betxnpostop_modify (Slapi_PBlock *pb);

/* In repl5_init.c */
char* get_thread_private_agmtname ();
void  set_thread_private_agmtname (const char *agmtname);
void* get_thread_private_cache ();
void  set_thread_private_cache (void *buf);
char* get_repl_session_id (Slapi_PBlock *pb, char *id, CSN **opcsn);

/* In repl_extop.c */
int multimaster_extop_StartNSDS50ReplicationRequest(Slapi_PBlock *pb);
int multimaster_extop_EndNSDS50ReplicationRequest(Slapi_PBlock *pb);
int extop_noop(Slapi_PBlock *pb);
struct berval *NSDS50StartReplicationRequest_new(const char *protocol_oid,
	const char *repl_root, char **extra_referrals, CSN *csn);
struct berval *NSDS50EndReplicationRequest_new(char *repl_root);
int decode_repl_ext_response(struct berval *bvdata, int *response_code,
	struct berval ***ruv_bervals, char **data_guid, struct berval **data);
struct berval *NSDS90StartReplicationRequest_new(const char *protocol_oid,
        const char *repl_root, char **extra_referrals, CSN *csn,
	const char *data_guid, const struct berval *data);

/* In repl5_total.c */
int multimaster_extop_NSDS50ReplicationEntry(Slapi_PBlock *pb);

/* In repl_controls.c */
int create_NSDS50ReplUpdateInfoControl(const char *uuid,
	const char *superior_uuid, const CSN *csn,
	LDAPMod **modify_mods, LDAPControl **ctrlp);
void destroy_NSDS50ReplUpdateInfoControl(LDAPControl **ctrlp);
int decode_NSDS50ReplUpdateInfoControl(LDAPControl **controlsp,
    char **uuid, char **newsuperior_uuid, CSN **csn, LDAPMod ***modrdn_mods);

/* In repl5_replsupplier.c */
typedef struct repl_supplier Repl_Supplier;
Repl_Supplier *replsupplier_init(Slapi_Entry *e);
void replsupplier_configure(Repl_Supplier *rs, Slapi_PBlock *pb);
void replsupplier_start(Repl_Supplier *rs);
void replsupplier_stop(Repl_Supplier *rs);
void replsupplier_destroy(Repl_Supplier **rs);
void replsupplier_notify(Repl_Supplier *rs, PRUint32 eventmask);
PRUint32 replsupplier_get_status(Repl_Supplier *rs);

/* In repl5_plugins.c */
int multimaster_set_local_purl();
const char *multimaster_get_local_purl();
PRBool multimaster_started();

/* In repl5_schedule.c */
typedef struct schedule Schedule;
typedef void (*window_state_change_callback)(void *arg, PRBool opened);
Schedule *schedule_new(window_state_change_callback callback_fn, void *callback_arg, const char *session_id);
void schedule_destroy(Schedule *s);
int schedule_set(Schedule *sch, Slapi_Attr *attr);
char **schedule_get(Schedule *sch);
int schedule_in_window_now(Schedule *sch);
PRTime schedule_next(Schedule *sch);
int schedule_notify(Schedule *sch, Slapi_PBlock *pb);
void schedule_set_priority_attributes(Schedule *sch, char **prio_attrs, int override_schedule);
void schedule_set_startup_delay(Schedule *sch, size_t startup_delay);
void schedule_set_maximum_backlog(Schedule *sch, size_t max_backlog);
void schedule_notify_session(Schedule *sch, PRTime session_end_time, unsigned int flags);
#define REPLICATION_SESSION_SUCCESS	0

/* In repl5_bos.c */
typedef struct repl_bos Repl_Bos;

/* In repl5_agmt.c */
typedef struct repl5agmt Repl_Agmt;
#define TRANSPORT_FLAG_SSL 1
#define TRANSPORT_FLAG_TLS 2
#define BINDMETHOD_SIMPLE_AUTH 1
#define BINDMETHOD_SSL_CLIENTAUTH 2
#define BINDMETHOD_SASL_GSSAPI 3
#define BINDMETHOD_SASL_DIGEST_MD5 4
Repl_Agmt *agmt_new_from_entry(Slapi_Entry *e);
Repl_Agmt *agmt_new_from_pblock(Slapi_PBlock *pb);
void agmt_delete(void **ra);
const Slapi_DN *agmt_get_dn_byref(const Repl_Agmt *ra);
int agmt_get_auto_initialize(const Repl_Agmt *ra);
long agmt_get_timeout(const Repl_Agmt *ra);
long agmt_get_busywaittime(const Repl_Agmt *ra);
long agmt_get_pausetime(const Repl_Agmt *ra);
int agmt_start(Repl_Agmt *ra);
int windows_agmt_start(Repl_Agmt *ra); 
int agmt_stop(Repl_Agmt *ra);
int agmt_replicate_now(Repl_Agmt *ra);
char *agmt_get_hostname(const Repl_Agmt *ra);
int agmt_get_port(const Repl_Agmt *ra);
PRUint32 agmt_get_transport_flags(const Repl_Agmt *ra);
char *agmt_get_binddn(const Repl_Agmt *ra);
struct berval *agmt_get_credentials(const Repl_Agmt *ra);
int agmt_get_bindmethod(const Repl_Agmt *ra);
Slapi_DN *agmt_get_replarea(const Repl_Agmt *ra);
int agmt_is_fractional(const Repl_Agmt *ra);
int agmt_is_fractional_attr(const Repl_Agmt *ra, const char *attrname);
int agmt_is_50_mm_protocol(const Repl_Agmt *ra);
int agmt_matches_name(const Repl_Agmt *ra, const Slapi_DN *name);
int agmt_replarea_matches(const Repl_Agmt *ra, const Slapi_DN *name);
int agmt_schedule_in_window_now(const Repl_Agmt *ra);
int agmt_set_schedule_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_timeout_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_busywaittime_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_pausetime_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_credentials_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_binddn_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_bind_method_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_transportinfo_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
int agmt_set_port_from_entry( Repl_Agmt *ra, const Slapi_Entry *e );
const char *agmt_get_long_name(const Repl_Agmt *ra);
int agmt_initialize_replica(const Repl_Agmt *agmt);
void agmt_replica_init_done (const Repl_Agmt *agmt);
void agmt_notify_change(Repl_Agmt *ra, Slapi_PBlock *pb);
Object* agmt_get_consumer_ruv (Repl_Agmt *ra);
ReplicaId agmt_get_consumer_rid ( Repl_Agmt *ra, void *conn );
int agmt_set_consumer_ruv (Repl_Agmt *ra, RUV *ruv);
void agmt_update_consumer_ruv (Repl_Agmt *ra);
CSN* agmt_get_consumer_schema_csn (Repl_Agmt *ra);
void agmt_set_consumer_schema_csn (Repl_Agmt *ra, CSN *csn);
void agmt_set_last_update_in_progress (Repl_Agmt *ra, PRBool in_progress);
void agmt_set_last_update_start (Repl_Agmt *ra, time_t start_time);
void agmt_set_last_update_end (Repl_Agmt *ra, time_t end_time);
void agmt_set_last_update_status (Repl_Agmt *ra, int ldaprc, int replrc, const char *msg);
void agmt_set_update_in_progress (Repl_Agmt *ra, PRBool in_progress);
void agmt_set_last_init_start (Repl_Agmt *ra, time_t start_time);
void agmt_set_last_init_end (Repl_Agmt *ra, time_t end_time);
void agmt_set_last_init_status (Repl_Agmt *ra, int ldaprc, int replrc, const char *msg);
void agmt_inc_last_update_changecount (Repl_Agmt *ra, ReplicaId rid, int skipped);
void agmt_get_changecount_string (Repl_Agmt *ra, char *buf, int bufsize);
int agmt_set_replicated_attributes_from_entry(Repl_Agmt *ra, const Slapi_Entry *e);
int agmt_set_replicated_attributes_from_attr(Repl_Agmt *ra, Slapi_Attr *sattr);
char **agmt_get_fractional_attrs(const Repl_Agmt *ra);
char **agmt_validate_replicated_attributes(Repl_Agmt *ra);
void* agmt_get_priv (const Repl_Agmt *agmt);
void agmt_set_priv (Repl_Agmt *agmt, void* priv);

int get_agmt_agreement_type ( Repl_Agmt *agmt);
int agmt_has_protocol(Repl_Agmt *agmt);

typedef struct replica Replica;

/* In repl5_agmtlist.c */
int agmtlist_config_init();
void agmtlist_shutdown();
void agmtlist_notify_all(Slapi_PBlock *pb);
Object* agmtlist_get_first_agreement_for_replica (Replica *r);
Object* agmtlist_get_next_agreement_for_replica (Replica *r, Object *prev);


/* In repl5_backoff.c */
typedef struct backoff_timer Backoff_Timer;
#define BACKOFF_FIXED 1
#define BACKOFF_EXPONENTIAL 2
#define BACKOFF_RANDOM 3
Backoff_Timer *backoff_new(int timer_type, int initial_interval, int max_interval);
time_t backoff_reset(Backoff_Timer *bt, slapi_eq_fn_t callback, void *callback_data);
time_t backoff_step(Backoff_Timer *bt);
int backoff_expired(Backoff_Timer *bt, int margin);
void backoff_delete(Backoff_Timer **btp);

/* In repl5_connection.c */
typedef struct repl_connection Repl_Connection;
typedef enum
{   
    CONN_OPERATION_SUCCESS,
	CONN_OPERATION_FAILED,
	CONN_NOT_CONNECTED,
	CONN_SUPPORTS_DS5_REPL,
	CONN_DOES_NOT_SUPPORT_DS5_REPL,
	CONN_SCHEMA_UPDATED,
	CONN_SCHEMA_NO_UPDATE_NEEDED,
	CONN_LOCAL_ERROR,
	CONN_BUSY,
	CONN_SSL_NOT_ENABLED,
	CONN_TIMEOUT,
	CONN_SUPPORTS_DS71_REPL,
	CONN_DOES_NOT_SUPPORT_DS71_REPL,
	CONN_IS_READONLY,
	CONN_IS_NOT_READONLY,
	CONN_SUPPORTS_DIRSYNC,
	CONN_DOES_NOT_SUPPORT_DIRSYNC,
	CONN_IS_WIN2K3,
	CONN_NOT_WIN2K3,
	CONN_SUPPORTS_DS90_REPL,
	CONN_DOES_NOT_SUPPORT_DS90_REPL
} ConnResult;  
Repl_Connection *conn_new(Repl_Agmt *agmt);
ConnResult conn_connect(Repl_Connection *conn);
void conn_disconnect(Repl_Connection *conn);
void conn_delete(Repl_Connection *conn);
void conn_get_error(Repl_Connection *conn, int *operation, int *error);
void conn_get_error_ex(Repl_Connection *conn, int *operation, int *error, char **error_string);
ConnResult conn_send_add(Repl_Connection *conn, const char *dn, LDAPMod **attrs,
	LDAPControl *update_control, int *message_id);
ConnResult conn_send_delete(Repl_Connection *conn, const char *dn,
	LDAPControl *update_control, int *message_id);
ConnResult conn_send_modify(Repl_Connection *conn, const char *dn, LDAPMod **mods,
	LDAPControl *update_control, int *message_id);
ConnResult conn_send_rename(Repl_Connection *conn, const char *dn,
	const char *newrdn, const char *newparent, int deleteoldrdn,
	LDAPControl *update_control, int *message_id);
ConnResult conn_send_extended_operation(Repl_Connection *conn, const char *extop_oid,
	struct berval *payload, LDAPControl *update_control, int *message_id);
const char *conn_get_status(Repl_Connection *conn);
void conn_start_linger(Repl_Connection *conn);
void conn_cancel_linger(Repl_Connection *conn);
ConnResult conn_replica_supports_ds5_repl(Repl_Connection *conn);
ConnResult conn_replica_supports_ds71_repl(Repl_Connection *conn);
ConnResult conn_replica_supports_ds90_repl(Repl_Connection *conn);
ConnResult conn_replica_is_readonly(Repl_Connection *conn);

ConnResult conn_read_entry_attribute(Repl_Connection *conn, const char *dn, char *type,
	struct berval ***returned_bvals);
ConnResult conn_push_schema(Repl_Connection *conn, CSN **remotecsn);
void conn_set_timeout(Repl_Connection *conn, long timeout);
long conn_get_timeout(Repl_Connection *conn);
void conn_set_agmt_changed(Repl_Connection *conn);
ConnResult conn_read_result(Repl_Connection *conn, int *message_id);
ConnResult conn_read_result_ex(Repl_Connection *conn, char **retoidp, struct berval **retdatap, LDAPControl ***returned_controls, int send_msgid, int *resp_msgid, int noblock);

/* In repl5_protocol.c */
typedef struct repl_protocol Repl_Protocol;
Repl_Protocol *prot_new(Repl_Agmt *agmt, int protocol_state);
void prot_start(Repl_Protocol *rp);
Repl_Agmt *prot_get_agreement(Repl_Protocol *rp);
/* initiate total protocol */
void prot_initialize_replica(Repl_Protocol *rp);
/* stop protocol session in progress */
void prot_stop(Repl_Protocol *rp);
void prot_delete(Repl_Protocol **rpp);
void prot_free(Repl_Protocol **rpp);
PRBool prot_set_active_protocol (Repl_Protocol *rp, PRBool total);
void prot_clear_active_protocol (Repl_Protocol *rp);
Repl_Connection *prot_get_connection(Repl_Protocol *rp);
void prot_resume(Repl_Protocol *rp, int wakeup_action);
void prot_notify_update(Repl_Protocol *rp);
void prot_notify_agmt_changed(Repl_Protocol *rp, char * agmt_name);
void prot_notify_window_opened (Repl_Protocol *rp);
void prot_notify_window_closed (Repl_Protocol *rp);
Object *prot_get_replica_object(Repl_Protocol *rp);
void prot_replicate_now(Repl_Protocol *rp);

/* In repl5_replica.c */
typedef enum
{   
    REPLICA_TYPE_UNKNOWN,
	REPLICA_TYPE_PRIMARY,
	REPLICA_TYPE_READONLY,
	REPLICA_TYPE_UPDATABLE,
    REPLICA_TYPE_END	
} ReplicaType;  

#define RUV_STORAGE_ENTRY_UNIQUEID "ffffffff-ffffffff-ffffffff-ffffffff"
#define START_ITERATION_ENTRY_UNIQUEID "00000000-00000000-00000000-00000000"
#define START_ITERATION_ENTRY_DN       "cn=start iteration"

typedef int (*FNEnumReplica) (Replica *r, void *arg);

/* this function should be called to construct the replica object
   from the data already in the DIT */
Replica *replica_new(const Slapi_DN *root);
Replica *windows_replica_new(const Slapi_DN *root);
/* this function should be called to construct the replica object
   during addition of the replica over LDAP */
Replica *replica_new_from_entry (Slapi_Entry *e, char *errortext, PRBool is_add_operation);
void replica_destroy(void **arg);
PRBool replica_get_exclusive_access(Replica *r, PRBool *isInc, PRUint64 connid, int opid,
									const char *locking_purl,
									char **current_purl);
void replica_relinquish_exclusive_access(Replica *r, PRUint64 connid, int opid);
PRBool replica_get_tombstone_reap_active(const Replica *r);
const Slapi_DN *replica_get_root(const Replica *r);
const char *replica_get_name(const Replica *r);
ReplicaId replica_get_rid (const Replica *r);
void replica_set_rid (Replica *r, ReplicaId rid);
PRBool replica_is_initialized (const Replica *r);
Object *replica_get_ruv (const Replica *r);
/* replica now owns the RUV */
void replica_set_ruv (Replica *r, RUV *ruv);
Object *replica_get_csngen (const Replica *r);
ReplicaType replica_get_type (const Replica *r);
void replica_set_type (Replica *r, ReplicaType type);
PRBool replica_is_legacy_consumer (const Replica *r);
void replica_set_legacy_consumer (Replica *r, PRBool legacy);
char *replica_get_legacy_purl (const Replica *r);
void replica_set_legacy_purl (Replica *r, const char *purl);
PRBool replica_is_updatedn (const Replica *r, const Slapi_DN *sdn);
void replica_set_updatedn (Replica *r, const Slapi_ValueSet *vs, int mod_op);
char *replica_get_generation (const Replica *r);
/* currently supported flags */
#define REPLICA_LOG_CHANGES 0x1 /* enable change logging */
PRBool replica_is_flag_set (const Replica *r, PRUint32 flag);
void   replica_set_flag (Replica *r, PRUint32 flag, PRBool clear);
void   replica_replace_flags (Replica *r, PRUint32 flags);
void replica_dump(Replica *r);
void replica_set_enabled (Replica *r, PRBool enable);
Object *replica_get_replica_from_dn (const Slapi_DN *dn);
void replica_update_ruv(Replica *replica, const CSN *csn, const char *replica_purl);
Object *replica_get_replica_for_op (Slapi_PBlock *pb);
/* the functions below manipulate replica hash */
int replica_init_name_hash ();
void replica_destroy_name_hash ();
int replica_add_by_name (const char *name, Object *replica);
int replica_delete_by_name (const char *name);
Object* replica_get_by_name (const char *name);
void replica_flush(Replica *r);
void replica_get_referrals(const Replica *r, char ***referrals);
void replica_set_referrals(Replica *r,const Slapi_ValueSet *vs);
int replica_update_csngen_state (Replica *r, const RUV *ruv);
int replica_update_csngen_state_ext (Replica *r, const RUV *ruv, const CSN *extracsn);
CSN *replica_get_purge_csn(const Replica *r);
int replica_log_ruv_elements (const Replica *r);
void replica_enumerate_replicas (FNEnumReplica fn, void *arg);
int replica_reload_ruv (Replica *r);
int replica_check_for_data_reload (Replica *r, void *arg);
/* the functions below manipulate replica dn hash */
int replica_init_dn_hash ();
void replica_destroy_dn_hash ();
int replica_add_by_dn (const char *dn);
int replica_delete_by_dn (const char *dn);
int replica_is_being_configured (const char *dn);
const CSN * _get_deletion_csn(Slapi_Entry *e);
int legacy_consumer_init_referrals (Replica *r);
void consumer5_set_mapping_tree_state_for_replica(const Replica *r, RUV *supplierRuv);
Object *replica_get_for_backend (const char *be_name);
void replica_set_purge_delay (Replica *r, PRUint32 purge_delay);
void replica_set_tombstone_reap_interval (Replica *r, long interval);
void replica_update_ruv_consumer (Replica *r, RUV *supplier_ruv);
void replica_set_ruv_dirty (Replica *r);
void replica_write_ruv (Replica *r);
/* The functions below handles the state flag */
/* Current internal state flags */
/* The replica can be busy and not other flag, 
 * it means that the protocol has ended, but the work is not done yet.
 * It happens on total protocol, the end protocol has been received, 
 * and the thread waits for import to finish
 */
#define REPLICA_IN_USE	1 /* The replica is busy */
#define REPLICA_INCREMENTAL_IN_PROGRESS 2 /* Set only between start and stop inc */
#define REPLICA_TOTAL_IN_PROGRESS 4 /* Set only between start and stop total */
#define REPLICA_AGREEMENTS_DISABLED 8 /* Replica is offline */
#define REPLICA_TOTAL_EXCL_SEND 16 /* The server is either sending or receiving
                                      the total update.  Introducing it if SEND
                                      is active, RECV should back off. And
                                      vice versa.  But SEND can coexist. */
#define REPLICA_TOTAL_EXCL_RECV 32 /* ditto */

PRBool replica_is_state_flag_set(Replica *r, PRInt32 flag);
void replica_set_state_flag (Replica *r, PRUint32 flag, PRBool clear); 
void replica_set_tombstone_reap_stop(Replica *r, PRBool val);
void replica_enable_replication (Replica *r);
void replica_disable_replication (Replica *r, Object *r_obj);
int replica_start_agreement(Replica *r, Repl_Agmt *ra);
int windows_replica_start_agreement(Replica *r, Repl_Agmt *ra);

CSN* replica_generate_next_csn ( Slapi_PBlock *pb, const CSN *basecsn );
int replica_get_attr ( Slapi_PBlock *pb, const char *type, void *value );

/* mapping tree extensions manipulation */
void multimaster_mtnode_extension_init ();
void multimaster_mtnode_extension_destroy ();
void multimaster_mtnode_construct_replicas ();

void multimaster_be_state_change (void *handle, char *be_name, int old_be_state, int new_be_state);

/* In repl5_replica_config.c */
int replica_config_init();
void replica_config_destroy ();
int get_replica_type(Replica *r);

/* replutil.c */
LDAPControl* create_managedsait_control ();
LDAPControl* create_backend_control(Slapi_DN *sdn);
void repl_set_mtn_state_and_referrals(const Slapi_DN *sdn, const char *mtn_state,
									  const RUV *ruv, char **ruv_referrals,
									  char **other_referrals);
void repl_set_repl_plugin_path(const char *path);

/* repl5_updatedn_list.c */
typedef void *ReplicaUpdateDNList;
typedef int (*FNEnumDN)(Slapi_DN *dn, void *arg);
ReplicaUpdateDNList replica_updatedn_list_new(const Slapi_Entry *entry);
void replica_updatedn_list_free(ReplicaUpdateDNList list);
void replica_updatedn_list_replace(ReplicaUpdateDNList list, const Slapi_ValueSet *vs);
void replica_updatedn_list_delete(ReplicaUpdateDNList list, const Slapi_ValueSet *vs);
void replica_updatedn_list_add(ReplicaUpdateDNList list, const Slapi_ValueSet *vs);
PRBool replica_updatedn_list_ismember(ReplicaUpdateDNList list, const Slapi_DN *dn);
char *replica_updatedn_list_to_string(ReplicaUpdateDNList list, const char *delimiter);
void replica_updatedn_list_enumerate(ReplicaUpdateDNList list, FNEnumDN fn, void *arg);

/* enabling developper traces for MMR to understand the total/inc protocol state machines */
#ifdef DEV_DEBUG
#define SLAPI_LOG_DEV_DEBUG SLAPI_LOG_FATAL
#define dev_debug(a) slapi_log_error(SLAPI_LOG_DEV_DEBUG, "DEV_DEBUG", "%s\n", a)
#else
#define dev_debug(a)
#endif

void repl5_set_debug_timeout(const char *val);
/* temp hack XXX */
ReplicaId agmt_get_consumerRID(Repl_Agmt *ra);


void windows_init_agreement_from_entry(Repl_Agmt *ra, Slapi_Entry *e);
int windows_handle_modify_agreement(Repl_Agmt *ra, const char *type, Slapi_Entry *e);
void windows_agreement_delete(Repl_Agmt *ra);
Repl_Connection *windows_conn_new(Repl_Agmt *agmt);
void windows_conn_delete(Repl_Connection *conn);

/* repl_session_plugin.c */
void repl_session_plugin_init();
void repl_session_plugin_call_agmt_init_cb(Repl_Agmt *ra);
int repl_session_plugin_call_pre_acquire_cb(const Repl_Agmt *ra, int is_total,
        char **data_guid, struct berval **data);
int repl_session_plugin_call_post_acquire_cb(const Repl_Agmt *ra, int is_total,
        const char *data_guid, const struct berval *data);
int repl_session_plugin_call_recv_acquire_cb(const char *repl_area, int is_total,
        const char *data_guid, const struct berval *data);
int repl_session_plugin_call_reply_acquire_cb(const char *repl_area, int is_total,
        char **data_guid, struct berval **data);
void repl_session_plugin_call_destroy_agmt_cb(const Repl_Agmt *ra);

#endif /* _REPL5_H_ */