back-meta.h

ldap服务器源码

/* $OpenLDAP: pkg/ldap/servers/slapd/back-meta/back-meta.h,v 1.23.2.22 2007/01/27 23:56:43 ando Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1999-2007 The OpenLDAP Foundation.
 * Portions Copyright 2001-2003 Pierangelo Masarati.
 * Portions Copyright 1999-2003 Howard Chu.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted only as authorized by the OpenLDAP
 * Public License.
 *
 * A copy of this license is available in the file LICENSE in the
 * top-level directory of the distribution or, alternatively, at
 * <http://www.OpenLDAP.org/license.html>.
 */
/* ACKNOWLEDGEMENTS:
 * This work was initially developed by the Howard Chu for inclusion
 * in OpenLDAP Software and subsequently enhanced by Pierangelo
 * Masarati.
 */

#ifndef SLAPD_LDAP_H
#error "include servers/slapd/back-ldap/back-ldap.h before this file!"
#endif /* SLAPD_LDAP_H */

#ifndef SLAPD_META_H
#define SLAPD_META_H

#include "proto-meta.h"

/* String rewrite library */
#include "rewrite.h"
LDAP_BEGIN_DECL

/*
 * Set META_BACK_PRINT_CONNTREE larger than 0 to dump the connection tree (debug only)
 */
#ifndef META_BACK_PRINT_CONNTREE
#define META_BACK_PRINT_CONNTREE 0
#endif /* !META_BACK_PRINT_CONNTREE */

struct slap_conn;
struct slap_op;

/* from back-ldap.h before rwm removal */
struct ldapmap {
	int drop_missing;

	Avlnode *map;
	Avlnode *remap;
};

struct ldapmapping {
	struct berval src;
	struct berval dst;
};

struct ldaprwmap {
	/*
	 * DN rewriting
	 */
#ifdef ENABLE_REWRITE
	struct rewrite_info *rwm_rw;
#else /* !ENABLE_REWRITE */
	/* some time the suffix massaging without librewrite
	 * will be disabled */
	BerVarray rwm_suffix_massage;
#endif /* !ENABLE_REWRITE */

	/*
	 * Attribute/objectClass mapping
	 */
	struct ldapmap rwm_oc;
	struct ldapmap rwm_at;
};

/* Whatever context ldap_back_dn_massage needs... */
typedef struct dncookie {
	struct metatarget_t	*target;

#ifdef ENABLE_REWRITE
	Connection		*conn;
	char			*ctx;
	SlapReply		*rs;
#else
	int			normalized;
	int			tofrom;
#endif
} dncookie;

int ldap_back_dn_massage(dncookie *dc, struct berval *dn,
	struct berval *res);

extern int ldap_back_conn_cmp( const void *c1, const void *c2);
extern int ldap_back_conn_dup( void *c1, void *c2 );
extern void ldap_back_conn_free( void *c );

/* attributeType/objectClass mapping */
int mapping_cmp (const void *, const void *);
int mapping_dup (void *, void *);

void ldap_back_map_init ( struct ldapmap *lm, struct ldapmapping ** );
int ldap_back_mapping ( struct ldapmap *map, struct berval *s,
	struct ldapmapping **m, int remap );
void ldap_back_map ( struct ldapmap *map, struct berval *s, struct berval *m,
	int remap );
#define BACKLDAP_MAP	0
#define BACKLDAP_REMAP	1
char *
ldap_back_map_filter(
	struct ldapmap *at_map,
	struct ldapmap *oc_map,
	struct berval *f,
	int remap );

int
ldap_back_map_attrs(
	struct ldapmap *at_map,
	AttributeName *a,
	int remap,
	char ***mapped_attrs );

extern int ldap_back_map_config(
	struct ldapmap	*oc_map,
	struct ldapmap	*at_map,
	const char	*fname,
	int		lineno,
	int		argc,
	char		**argv );

extern int
ldap_back_filter_map_rewrite(
	dncookie	*dc,
	Filter		*f,
	struct berval	*fstr,
	int		remap );

/* suffix massaging by means of librewrite */
#ifdef ENABLE_REWRITE
extern int
suffix_massage_config( struct rewrite_info *info,
	struct berval *pvnc,
	struct berval *nvnc,
	struct berval *prnc,
	struct berval *nrnc );
#endif /* ENABLE_REWRITE */
extern int
ldap_back_referral_result_rewrite(
	dncookie	*dc,
	BerVarray	a_vals );
extern int
ldap_dnattr_rewrite(
	dncookie	*dc,
	BerVarray	a_vals );
extern int
ldap_dnattr_result_rewrite(
	dncookie	*dc,
	BerVarray	a_vals );

/* (end of) from back-ldap.h before rwm removal */

/*
 * A metasingleconn_t can be in the following, mutually exclusive states:
 *
 *	- none			(0x0U)
 *	- creating		META_BACK_FCONN_CREATING
 *	- initialized		META_BACK_FCONN_INITED
 *	- binding		LDAP_BACK_FCONN_BINDING
 *	- bound/anonymous	LDAP_BACK_FCONN_ISBOUND/LDAP_BACK_FCONN_ISANON
 *
 * possible modifiers are:
 *
 *	- privileged		LDAP_BACK_FCONN_ISPRIV
 *	- privileged, TLS	LDAP_BACK_FCONN_ISTLS
 *	- subjected to idassert	LDAP_BACK_FCONN_ISIDASR
 *	- tainted		LDAP_BACK_FCONN_TAINTED
 */

#define META_BACK_FCONN_INITED		(0x00100000U)
#define META_BACK_FCONN_CREATING	(0x00200000U)

#define	META_BACK_CONN_INITED(lc)		LDAP_BACK_CONN_ISSET((lc), META_BACK_FCONN_INITED)
#define	META_BACK_CONN_INITED_SET(lc)		LDAP_BACK_CONN_SET((lc), META_BACK_FCONN_INITED)
#define	META_BACK_CONN_INITED_CLEAR(lc)		LDAP_BACK_CONN_CLEAR((lc), META_BACK_FCONN_INITED)
#define	META_BACK_CONN_INITED_CPY(lc, mlc)	LDAP_BACK_CONN_CPY((lc), META_BACK_FCONN_INITED, (mlc))
#define	META_BACK_CONN_CREATING(lc)		LDAP_BACK_CONN_ISSET((lc), META_BACK_FCONN_CREATING)
#define	META_BACK_CONN_CREATING_SET(lc)		LDAP_BACK_CONN_SET((lc), META_BACK_FCONN_CREATING)
#define	META_BACK_CONN_CREATING_CLEAR(lc)	LDAP_BACK_CONN_CLEAR((lc), META_BACK_FCONN_CREATING)
#define	META_BACK_CONN_CREATING_CPY(lc, mlc)	LDAP_BACK_CONN_CPY((lc), META_BACK_FCONN_CREATING, (mlc))

struct metainfo_t;

#define	META_NOT_CANDIDATE		((ber_tag_t)0x0)
#define	META_CANDIDATE			((ber_tag_t)0x1)
#define	META_BINDING			((ber_tag_t)0x2)
#define	META_RETRYING			((ber_tag_t)0x4)

typedef struct metasingleconn_t {
#define META_CND_ISSET(rs,f)		( ( (rs)->sr_tag & (f) ) == (f) )
#define META_CND_SET(rs,f)		( (rs)->sr_tag |= (f) )
#define META_CND_CLEAR(rs,f)		( (rs)->sr_tag &= ~(f) )

#define META_CANDIDATE_RESET(rs)	( (rs)->sr_tag = 0 )
#define META_IS_CANDIDATE(rs)		META_CND_ISSET( (rs), META_CANDIDATE )
#define META_CANDIDATE_SET(rs)		META_CND_SET( (rs), META_CANDIDATE )
#define META_CANDIDATE_CLEAR(rs)	META_CND_CLEAR( (rs), META_CANDIDATE )
#define META_IS_BINDING(rs)		META_CND_ISSET( (rs), META_BINDING )
#define META_BINDING_SET(rs)		META_CND_SET( (rs), META_BINDING )
#define META_BINDING_CLEAR(rs)		META_CND_CLEAR( (rs), META_BINDING )
#define META_IS_RETRYING(rs)		META_CND_ISSET( (rs), META_RETRYING )
#define META_RETRYING_SET(rs)		META_CND_SET( (rs), META_RETRYING )
#define META_RETRYING_CLEAR(rs)		META_CND_CLEAR( (rs), META_RETRYING )
	
	LDAP            	*msc_ld;
	time_t			msc_time;
	struct berval          	msc_bound_ndn;
	struct berval		msc_cred;
	unsigned		msc_mscflags;
	/* NOTE: lc_lcflags is redefined to msc_mscflags to reuse the macros
	 * defined for back-ldap */
#define	lc_lcflags		msc_mscflags
} metasingleconn_t;

typedef struct metaconn_t {
	struct slap_conn	*mc_conn;
#define	lc_conn			mc_conn
	unsigned		mc_refcnt;

	time_t			mc_create_time;
	time_t			mc_time;
	
	struct berval          	mc_local_ndn;
	/* NOTE: msc_mscflags is used to recycle the #define
	 * in metasingleconn_t */
	unsigned		msc_mscflags;

	/*
	 * means that the connection is bound; 
	 * of course only one target actually is ...
	 */
	int             	mc_authz_target;
#define META_BOUND_NONE		(-1)
#define META_BOUND_ALL		(-2)

	struct metainfo_t	*mc_info;

	LDAP_TAILQ_ENTRY(metaconn_t)	mc_q;

	/* supersedes the connection stuff */
	metasingleconn_t	mc_conns[ 1 ];
	/* NOTE: mc_conns must be last, because
	 * the required number of conns is malloc'ed
	 * in one block with the metaconn_t structure */
} metaconn_t;

typedef struct metatarget_t {
	char			*mt_uri;
	ldap_pvt_thread_mutex_t	mt_uri_mutex;

	/* TODO: we might want to enable different strategies
	 * for different targets */
	LDAP_REBIND_PROC	*mt_rebind_f;
	void			*mt_urllist_p;

	BerVarray		mt_subtree_exclude;
	int			mt_scope;

	struct berval		mt_psuffix;		/* pretty suffix */
	struct berval		mt_nsuffix;		/* normalized suffix */

	struct berval		mt_binddn;
	struct berval		mt_bindpw;

	slap_idassert_t		mt_idassert;
#define	mt_idassert_mode	mt_idassert.si_mode
#define	mt_idassert_authcID	mt_idassert.si_bc.sb_authcId
#define	mt_idassert_authcDN	mt_idassert.si_bc.sb_binddn
#define	mt_idassert_passwd	mt_idassert.si_bc.sb_cred
#define	mt_idassert_authzID	mt_idassert.si_bc.sb_authzId
#define	mt_idassert_authmethod	mt_idassert.si_bc.sb_method
#define	mt_idassert_sasl_mech	mt_idassert.si_bc.sb_saslmech
#define	mt_idassert_sasl_realm	mt_idassert.si_bc.sb_realm
#define	mt_idassert_secprops	mt_idassert.si_bc.sb_secprops
#define	mt_idassert_tls		mt_idassert.si_bc.sb_tls
#define	mt_idassert_flags	mt_idassert.si_flags
#define	mt_idassert_authz	mt_idassert.si_authz

	int			mt_nretries;
#define META_RETRY_UNDEFINED	(-2)
#define META_RETRY_FOREVER	(-1)
#define META_RETRY_NEVER	(0)
#define META_RETRY_DEFAULT	(10)