openldap/servers/slapd/back-ldap/back-ldap.h

/* back-ldap.h - ldap backend header file */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1999-2006 The OpenLDAP Foundation.
 * Portions Copyright 2000-2003 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
#define SLAPD_LDAP_H

#include "../back-monitor/back-monitor.h"

LDAP_BEGIN_DECL

struct ldapinfo_t;

/* stuff required for monitoring */
typedef struct ldap_monitor_info_t {
	monitor_subsys_t	lmi_mss;
	struct ldapinfo_t	*lmi_li;

	struct berval		lmi_rdn;
	struct berval		lmi_nrdn;
	monitor_callback_t	*lmi_cb;
	struct berval		lmi_base;
	int			lmi_scope;
	struct berval		lmi_filter;
	struct berval		lmi_more_filter;
} ldap_monitor_info_t;

typedef struct ldapconn_t {
	Connection		*lc_conn;
#define	LDAP_BACK_PCONN		((void *)0x0)
#define	LDAP_BACK_PCONN_TLS	((void *)0x1)
#define	LDAP_BACK_PCONN_ID(c)	((void *)(c) > LDAP_BACK_PCONN_TLS ? (c)->c_connid : -1)
#ifdef HAVE_TLS
#define	LDAP_BACK_PCONN_SET(op)	((op)->o_conn->c_is_tls ? LDAP_BACK_PCONN_TLS : LDAP_BACK_PCONN)
#else /* ! HAVE_TLS */
#define	LDAP_BACK_PCONN_SET(op)	(LDAP_BACK_PCONN)
#endif /* ! HAVE_TLS */

	LDAP			*lc_ld;
	struct berval		lc_cred;
	struct berval 		lc_bound_ndn;
	struct berval		lc_local_ndn;
	unsigned		lc_lcflags;
#define LDAP_BACK_CONN_ISSET_F(fp,f)	(*(fp) & (f))
#define	LDAP_BACK_CONN_SET_F(fp,f)	(*(fp) |= (f))
#define	LDAP_BACK_CONN_CLEAR_F(fp,f)	(*(fp) &= ~(f))
#define	LDAP_BACK_CONN_CPY_F(fp,f,mfp) \
	do { \
		if ( ((f) & *(mfp)) == (f) ) { \
			*(fp) |= (f); \
		} else { \
			*(fp) &= ~(f); \
		} \
	} while ( 0 )

#define LDAP_BACK_CONN_ISSET(lc,f)	LDAP_BACK_CONN_ISSET_F(&(lc)->lc_lcflags, (f))
#define	LDAP_BACK_CONN_SET(lc,f)	LDAP_BACK_CONN_SET_F(&(lc)->lc_lcflags, (f))
#define	LDAP_BACK_CONN_CLEAR(lc,f)	LDAP_BACK_CONN_CLEAR_F(&(lc)->lc_lcflags, (f))
#define	LDAP_BACK_CONN_CPY(lc,f,mlc)	LDAP_BACK_CONN_CPY_F(&(lc)->lc_lcflags, (f), &(mlc)->lc_lcflags)

#define	LDAP_BACK_FCONN_ISBOUND	(0x00000001U)
#define	LDAP_BACK_FCONN_ISANON	(0x00000002U)
#define	LDAP_BACK_FCONN_ISBMASK	(LDAP_BACK_FCONN_ISBOUND|LDAP_BACK_FCONN_ISANON)
#define	LDAP_BACK_FCONN_ISPRIV	(0x00000004U)
#define	LDAP_BACK_FCONN_ISTLS	(0x00000008U)
#define	LDAP_BACK_FCONN_BINDING	(0x00000010U)
#define	LDAP_BACK_FCONN_TAINTED	(0x00000020U)

/* 0x00FF0000 are reserved for back-meta */

#define	LDAP_BACK_CONN_ISBOUND(lc)		LDAP_BACK_CONN_ISSET((lc), LDAP_BACK_FCONN_ISBOUND)
#define	LDAP_BACK_CONN_ISBOUND_SET(lc)		LDAP_BACK_CONN_SET((lc), LDAP_BACK_FCONN_ISBOUND)
#define	LDAP_BACK_CONN_ISBOUND_CLEAR(lc)	LDAP_BACK_CONN_CLEAR((lc), LDAP_BACK_FCONN_ISBMASK)
#define	LDAP_BACK_CONN_ISBOUND_CPY(lc, mlc)	LDAP_BACK_CONN_CPY((lc), LDAP_BACK_FCONN_ISBOUND, (mlc))
#define	LDAP_BACK_CONN_ISANON(lc)		LDAP_BACK_CONN_ISSET((lc), LDAP_BACK_FCONN_ISANON)
#define	LDAP_BACK_CONN_ISANON_SET(lc)		LDAP_BACK_CONN_SET((lc), LDAP_BACK_FCONN_ISANON)
#define	LDAP_BACK_CONN_ISANON_CLEAR(lc)		LDAP_BACK_CONN_ISBOUND_CLEAR((lc))
#define	LDAP_BACK_CONN_ISANON_CPY(lc, mlc)	LDAP_BACK_CONN_CPY((lc), LDAP_BACK_FCONN_ISANON, (mlc))
#define	LDAP_BACK_CONN_ISPRIV(lc)		LDAP_BACK_CONN_ISSET((lc), LDAP_BACK_FCONN_ISPRIV)
#define	LDAP_BACK_CONN_ISPRIV_SET(lc)		LDAP_BACK_CONN_SET((lc), LDAP_BACK_FCONN_ISPRIV)
#define	LDAP_BACK_CONN_ISPRIV_CLEAR(lc)		LDAP_BACK_CONN_CLEAR((lc), LDAP_BACK_FCONN_ISPRIV)
#define	LDAP_BACK_CONN_ISPRIV_CPY(lc, mlc)	LDAP_BACK_CONN_CPY((lc), LDAP_BACK_FCONN_ISPRIV, (mlc))
#define	LDAP_BACK_CONN_ISTLS(lc)		LDAP_BACK_CONN_ISSET((lc), LDAP_BACK_FCONN_ISTLS)
#define	LDAP_BACK_CONN_ISTLS_SET(lc)		LDAP_BACK_CONN_SET((lc), LDAP_BACK_FCONN_ISTLS)
#define	LDAP_BACK_CONN_ISTLS_CLEAR(lc)		LDAP_BACK_CONN_CLEAR((lc), LDAP_BACK_FCONN_ISTLS)
#define	LDAP_BACK_CONN_ISTLS_CPY(lc, mlc)	LDAP_BACK_CONN_CPY((lc), LDAP_BACK_FCONN_ISTLS, (mlc))
#define	LDAP_BACK_CONN_BINDING(lc)		LDAP_BACK_CONN_ISSET((lc), LDAP_BACK_FCONN_BINDING)
#define	LDAP_BACK_CONN_BINDING_SET(lc)		LDAP_BACK_CONN_SET((lc), LDAP_BACK_FCONN_BINDING)
#define	LDAP_BACK_CONN_BINDING_CLEAR(lc)	LDAP_BACK_CONN_CLEAR((lc), LDAP_BACK_FCONN_BINDING)
#define	LDAP_BACK_CONN_TAINTED(lc)		LDAP_BACK_CONN_ISSET((lc), LDAP_BACK_FCONN_TAINTED)
#define	LDAP_BACK_CONN_TAINTED_SET(lc)		LDAP_BACK_CONN_SET((lc), LDAP_BACK_FCONN_TAINTED)
#define	LDAP_BACK_CONN_TAINTED_CLEAR(lc)	LDAP_BACK_CONN_CLEAR((lc), LDAP_BACK_FCONN_TAINTED)

	unsigned		lc_refcnt;
	unsigned		lc_binding;
	unsigned		lc_flags;
	time_t			lc_create_time;
	time_t			lc_time;
} ldapconn_t;

typedef struct ldap_avl_info_t {
	ldap_pvt_thread_mutex_t		lai_mutex;
	Avlnode				*lai_tree;
} ldap_avl_info_t;

typedef struct slap_retry_info_t {
	time_t		*ri_interval;
	int		*ri_num;
	int		ri_idx;
	int		ri_count;
	time_t		ri_last;

#define SLAP_RETRYNUM_FOREVER	(-1)		/* retry forever */
#define SLAP_RETRYNUM_TAIL	(-2)		/* end of retrynum array */
#define SLAP_RETRYNUM_VALID(n)	((n) >= SLAP_RETRYNUM_FOREVER)	/* valid retrynum */
#define SLAP_RETRYNUM_FINITE(n)	((n) > SLAP_RETRYNUM_FOREVER)	/* not forever */
} slap_retry_info_t;

/*
 * identity assertion modes
 */
typedef enum {
	LDAP_BACK_IDASSERT_LEGACY = 1,
	LDAP_BACK_IDASSERT_NOASSERT,
	LDAP_BACK_IDASSERT_ANONYMOUS,
	LDAP_BACK_IDASSERT_SELF,
	LDAP_BACK_IDASSERT_OTHERDN,
	LDAP_BACK_IDASSERT_OTHERID
} slap_idassert_mode_t;

/* ID assert stuff */
typedef struct slap_idassert_t {
	slap_idassert_mode_t	si_mode;
#define	li_idassert_mode	li_idassert.si_mode

	slap_bindconf	si_bc;
#define	li_idassert_authcID	li_idassert.si_bc.sb_authcId
#define	li_idassert_authcDN	li_idassert.si_bc.sb_binddn
#define	li_idassert_passwd	li_idassert.si_bc.sb_cred
#define	li_idassert_authzID	li_idassert.si_bc.sb_authzId
#define	li_idassert_authmethod	li_idassert.si_bc.sb_method
#define	li_idassert_sasl_mech	li_idassert.si_bc.sb_saslmech
#define	li_idassert_sasl_realm	li_idassert.si_bc.sb_realm
#define	li_idassert_secprops	li_idassert.si_bc.sb_secprops
#define	li_idassert_tls		li_idassert.si_bc.sb_tls

	unsigned 	si_flags;
#define LDAP_BACK_AUTH_NONE				0x00U
#define	LDAP_BACK_AUTH_NATIVE_AUTHZ			0x01U
#define	LDAP_BACK_AUTH_OVERRIDE				0x02U
#define	LDAP_BACK_AUTH_PRESCRIPTIVE			0x04U
#define	LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ		0x08U
#define	LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND	0x10U
#define	li_idassert_flags	li_idassert.si_flags

	BerVarray	si_authz;
#define	li_idassert_authz	li_idassert.si_authz
} slap_idassert_t;

/*
 * Hook to allow mucking with ldapinfo_t when quarantine is over
 */
typedef int (*ldap_back_quarantine_f)( struct ldapinfo_t *, void * );

typedef struct ldapinfo_t {
	/* li_uri: the string that goes into ldap_initialize()
	 * TODO: use li_acl.sb_uri instead */
	char			*li_uri;
	/* li_bvuri: an array of each single URI that is equivalent;
	 * to be checked for the presence of a certain item */
	BerVarray		li_bvuri;
	ldap_pvt_thread_mutex_t	li_uri_mutex;

	LDAP_REBIND_PROC	*li_rebind_f;
	LDAP_URLLIST_PROC	*li_urllist_f;
	void			*li_urllist_p;

	slap_bindconf	li_acl;
#define	li_acl_authcID	li_acl.sb_authcId
#define	li_acl_authcDN	li_acl.sb_binddn
#define	li_acl_passwd	li_acl.sb_cred
#define	li_acl_authzID	li_acl.sb_authzId
#define	li_acl_authmethod	li_acl.sb_method
#define	li_acl_sasl_mech	li_acl.sb_saslmech
#define	li_acl_sasl_realm	li_acl.sb_realm
#define	li_acl_secprops	li_acl.sb_secprops

	/* ID assert stuff */
	slap_idassert_t	li_idassert;
	/* end of ID assert stuff */

	int		li_nretries;
#define LDAP_BACK_RETRY_UNDEFINED	(-2)
#define LDAP_BACK_RETRY_FOREVER		(-1)
#define LDAP_BACK_RETRY_NEVER		(0)
#define LDAP_BACK_RETRY_DEFAULT		(3)

	unsigned	li_flags;
#define LDAP_BACK_F_NONE		(0x0000U)
#define LDAP_BACK_F_SAVECRED		(0x0001U)
#define LDAP_BACK_F_USE_TLS		(0x0002U)
#define LDAP_BACK_F_PROPAGATE_TLS	(0x0004U)
#define LDAP_BACK_F_TLS_CRITICAL	(0x0008U)
#define LDAP_BACK_F_TLS_USE_MASK	(LDAP_BACK_F_USE_TLS|LDAP_BACK_F_TLS_CRITICAL)
#define LDAP_BACK_F_TLS_PROPAGATE_MASK	(LDAP_BACK_F_PROPAGATE_TLS|LDAP_BACK_F_TLS_CRITICAL)
#define LDAP_BACK_F_TLS_MASK		(LDAP_BACK_F_TLS_USE_MASK|LDAP_BACK_F_TLS_PROPAGATE_MASK)
#define LDAP_BACK_F_CHASE_REFERRALS	(0x0010U)
#define LDAP_BACK_F_PROXY_WHOAMI	(0x0020U)

#define	LDAP_BACK_F_T_F			(0x0040U)
#define	LDAP_BACK_F_T_F_DISCOVER	(0x0080U)
#define	LDAP_BACK_F_T_F_MASK		(LDAP_BACK_F_T_F)
#define	LDAP_BACK_F_T_F_MASK2		(LDAP_BACK_F_T_F_MASK|LDAP_BACK_F_T_F_DISCOVER)

#define LDAP_BACK_F_MONITOR		(0x0100U)
#define	LDAP_BACK_F_SINGLECONN		(0x0200U)

#define	LDAP_BACK_F_ISOPEN		(0x0400U)

#define	LDAP_BACK_F_CANCEL_ABANDON	(0x0000U)
#define	LDAP_BACK_F_CANCEL_IGNORE	(0x1000U)
#define	LDAP_BACK_F_CANCEL_EXOP		(0x2000U)
#define	LDAP_BACK_F_CANCEL_EXOP_DISCOVER	(0x4000U)
#define	LDAP_BACK_F_CANCEL_MASK		(LDAP_BACK_F_CANCEL_IGNORE|LDAP_BACK_F_CANCEL_EXOP)
#define	LDAP_BACK_F_CANCEL_MASK2	(LDAP_BACK_F_CANCEL_MASK|LDAP_BACK_F_CANCEL_EXOP_DISCOVER)

#define	LDAP_BACK_ISSET(li,f)		( ( (li)->li_flags & (f) ) == (f) )
#define	LDAP_BACK_ISMASK(li,m,f)	( ( (li)->li_flags & (m) ) == (f) )

#define LDAP_BACK_SAVECRED(li)		LDAP_BACK_ISSET( (li), LDAP_BACK_F_SAVECRED )
#define LDAP_BACK_USE_TLS(li)		LDAP_BACK_ISSET( (li), LDAP_BACK_F_USE_TLS )
#define LDAP_BACK_PROPAGATE_TLS(li)	LDAP_BACK_ISSET( (li), LDAP_BACK_F_PROPAGATE_TLS )
#define LDAP_BACK_TLS_CRITICAL(li)	LDAP_BACK_ISSET( (li), LDAP_BACK_F_TLS_CRITICAL )
#define LDAP_BACK_CHASE_REFERRALS(li)	LDAP_BACK_ISSET( (li), LDAP_BACK_F_CHASE_REFERRALS )
#define LDAP_BACK_PROXY_WHOAMI(li)	LDAP_BACK_ISSET( (li), LDAP_BACK_F_PROXY_WHOAMI )

#define	LDAP_BACK_T_F(li)		LDAP_BACK_ISMASK( (li), LDAP_BACK_F_T_F_MASK, LDAP_BACK_F_T_F )
#define	LDAP_BACK_T_F_DISCOVER(li)	LDAP_BACK_ISMASK( (li), LDAP_BACK_F_T_F_MASK2, LDAP_BACK_F_T_F_DISCOVER )

#define LDAP_BACK_MONITOR(li)		LDAP_BACK_ISSET( (li), LDAP_BACK_F_MONITOR )
#define	LDAP_BACK_SINGLECONN(li)	LDAP_BACK_ISSET( (li), LDAP_BACK_F_SINGLECONN )

#define	LDAP_BACK_ISOPEN(li)		LDAP_BACK_ISSET( (li), LDAP_BACK_F_ISOPEN )

#define	LDAP_BACK_ABANDON(li)		LDAP_BACK_ISMASK( (li), LDAP_BACK_F_CANCEL_MASK, LDAP_BACK_F_CANCEL_ABANDON )
#define	LDAP_BACK_IGNORE(li)		LDAP_BACK_ISMASK( (li), LDAP_BACK_F_CANCEL_MASK, LDAP_BACK_F_CANCEL_IGNORE )
#define	LDAP_BACK_CANCEL(li)		LDAP_BACK_ISMASK( (li), LDAP_BACK_F_CANCEL_MASK, LDAP_BACK_F_CANCEL_EXOP )
#define	LDAP_BACK_CANCEL_DISCOVER(li)	LDAP_BACK_ISMASK( (li), LDAP_BACK_F_CANCEL_MASK2, LDAP_BACK_F_CANCEL_EXOP_DISCOVER )

	int		li_version;

	ldap_avl_info_t	li_conninfo;

	ldap_monitor_info_t	li_monitor_info;

	sig_atomic_t		li_isquarantined;
#define	LDAP_BACK_FQ_NO		(0)
#define	LDAP_BACK_FQ_YES	(1)
#define	LDAP_BACK_FQ_RETRYING	(2)

	slap_retry_info_t	li_quarantine;
#define	LDAP_BACK_QUARANTINE(li)	( (li)->li_quarantine.ri_num != NULL )
	ldap_pvt_thread_mutex_t	li_quarantine_mutex;
	ldap_back_quarantine_f	li_quarantine_f;
	void			*li_quarantine_p;

	time_t		li_network_timeout;
	time_t		li_conn_ttl;
	time_t		li_idle_timeout;
	time_t		li_timeout[ SLAP_OP_LAST ];
} ldapinfo_t;

typedef enum ldap_back_send_t {
	LDAP_BACK_DONTSEND		= 0x00,
	LDAP_BACK_SENDOK		= 0x01,
	LDAP_BACK_SENDERR		= 0x02,
	LDAP_BACK_SENDRESULT		= (LDAP_BACK_SENDOK|LDAP_BACK_SENDERR),
	LDAP_BACK_BINDING		= 0x04,

	LDAP_BACK_BIND_DONTSEND		= (LDAP_BACK_BINDING),
	LDAP_BACK_BIND_SOK		= (LDAP_BACK_BINDING|LDAP_BACK_SENDOK),
	LDAP_BACK_BIND_SERR		= (LDAP_BACK_BINDING|LDAP_BACK_SENDERR),
	LDAP_BACK_BIND_SRES		= (LDAP_BACK_BINDING|LDAP_BACK_SENDRESULT),

	LDAP_BACK_RETRYING		= 0x08,
	LDAP_BACK_RETRY_DONTSEND	= (LDAP_BACK_RETRYING),
	LDAP_BACK_RETRY_SOK		= (LDAP_BACK_RETRYING|LDAP_BACK_SENDOK),
	LDAP_BACK_RETRY_SERR		= (LDAP_BACK_RETRYING|LDAP_BACK_SENDERR),
	LDAP_BACK_RETRY_SRES		= (LDAP_BACK_RETRYING|LDAP_BACK_SENDRESULT)
} ldap_back_send_t;

/* define to use asynchronous StartTLS */
#define SLAP_STARTTLS_ASYNCHRONOUS

/* timeout to use when calling ldap_result() */
#define	LDAP_BACK_RESULT_TIMEOUT	(0)
#define	LDAP_BACK_RESULT_UTIMEOUT	(100000)
#define	LDAP_BACK_TV_SET(tv) \
	do { \
		(tv)->tv_sec = LDAP_BACK_RESULT_TIMEOUT; \
		(tv)->tv_usec = LDAP_BACK_RESULT_UTIMEOUT; \
	} while ( 0 )

LDAP_END_DECL

#include "proto-ldap.h"

#endif /* SLAPD_LDAP_H */