C++ BER_BVISEMPTY函数代码示例

static int
pguid_db_init(
	BackendDB	*be,
	ConfigReply	*cr)
{
	if ( SLAP_ISGLOBALOVERLAY( be ) ) {
		Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
			"pguid_db_init: pguid cannot be used as global overlay.\n" );
		return 1;
	}

	if ( be->be_nsuffix == NULL ) {
		Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
			"pguid_db_init: database must have suffix\n" );
		return 1;
	}

	if ( BER_BVISNULL( &be->be_rootndn ) || BER_BVISEMPTY( &be->be_rootndn ) ) {
		Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
			"pguid_db_init: missing rootdn for database DN=\"%s\", YMMV\n",
			be->be_suffix[ 0 ].bv_val );
	}

	return 0;
}

int
slapi_modify_internal_pb( Slapi_PBlock *pb )
{
	SlapReply		*rs;

	if ( pb == NULL ) {
		return -1;
	}

	PBLOCK_ASSERT_INTOP( pb, LDAP_REQ_MODIFY );

	rs = pb->pb_rs;

	if ( pb->pb_op->orm_modlist == NULL ) {
		rs->sr_err = LDAP_PARAM_ERROR;
		goto cleanup;
	}

	if ( BER_BVISEMPTY( &pb->pb_op->o_req_ndn ) ) {
		rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
		goto cleanup;
	}

	rs->sr_err = slap_mods_check( pb->pb_op, pb->pb_op->orm_modlist,
		&rs->sr_text, pb->pb_textbuf, sizeof( pb->pb_textbuf ), NULL );
	if ( rs->sr_err != LDAP_SUCCESS ) {
                goto cleanup;
        }

	slapi_int_func_internal_pb( pb, op_modify );

cleanup:

	return 0;
}

void
rwm_mapping_dst_free( void *v_mapping )
{
	struct ldapmapping *mapping = v_mapping;

	if ( BER_BVISEMPTY( &mapping[0].m_dst ) ) {
		rwm_mapping_free( &mapping[ -1 ] );
	}
}

static void
mapping_dst_free(
	void		*v_mapping )
{
	struct ldapmapping *mapping = v_mapping;

	if ( BER_BVISEMPTY( &mapping->dst ) ) {
		mapping_free( &mapping[ -1 ] );
	}
}

int
fe_op_bind_success( Operation *op, SlapReply *rs )
{
	ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );

	if( op->o_conn->c_authz_backend == NULL ) {
		op->o_conn->c_authz_backend = op->o_bd;
	}

	/* be_bind returns regular/global edn */
	if( !BER_BVISEMPTY( &op->orb_edn ) ) {
		op->o_conn->c_dn = op->orb_edn;
	} else {
		ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
	}

	ber_dupbv( &op->o_conn->c_ndn, &op->o_req_ndn );

	/* op->o_conn->c_sb may be 0 for internal operations */
	if( !BER_BVISEMPTY( &op->o_conn->c_dn ) && op->o_conn->c_sb != 0 ) {
		ber_len_t max = sockbuf_max_incoming_auth;
		ber_sockbuf_ctrl( op->o_conn->c_sb,
			LBER_SB_OPT_SET_MAX_INCOMING, &max );
	}

	/* log authorization identity */
	Statslog( LDAP_DEBUG_STATS,
		"%s BIND dn=\"%s\" mech=%s ssf=0\n",
		op->o_log_prefix,
		op->o_conn->c_dn.bv_val, op->orb_mech.bv_val );

	Debug( LDAP_DEBUG_TRACE,
		"do_bind: v%d bind: \"%s\" to \"%s\"\n",
		op->o_protocol, op->o_req_dn.bv_val, op->o_conn->c_dn.bv_val );

	ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );

	/* send this here to avoid a race condition */
	send_ldap_result( op, rs );

	return LDAP_SUCCESS;
}

int
slapi_search_internal_callback_pb( Slapi_PBlock *pb,
	void *callback_data,
	plugin_result_callback prc,
	plugin_search_entry_callback psec,
	plugin_referral_entry_callback prec )
{
	int			free_filter = 0;
	SlapReply		*rs;

	if ( pb == NULL ) {
		return -1;
	}

	PBLOCK_ASSERT_INTOP( pb, LDAP_REQ_SEARCH );

	rs = pb->pb_rs;

	/* search callback and arguments */
	slapi_pblock_set( pb, SLAPI_X_INTOP_RESULT_CALLBACK,         (void *)prc );
	slapi_pblock_set( pb, SLAPI_X_INTOP_SEARCH_ENTRY_CALLBACK,   (void *)psec );
	slapi_pblock_set( pb, SLAPI_X_INTOP_REFERRAL_ENTRY_CALLBACK, (void *)prec );
	slapi_pblock_set( pb, SLAPI_X_INTOP_CALLBACK_DATA,           (void *)callback_data );

	if ( BER_BVISEMPTY( &pb->pb_op->ors_filterstr )) {
		rs->sr_err = LDAP_PARAM_ERROR;
		goto cleanup;
	}

	if ( pb->pb_op->ors_filter == NULL ) {
		pb->pb_op->ors_filter = slapi_str2filter( pb->pb_op->ors_filterstr.bv_val );
		if ( pb->pb_op->ors_filter == NULL ) {
			rs->sr_err = LDAP_PROTOCOL_ERROR;
			goto cleanup;
		}

		free_filter = 1;
	}

	slapi_int_func_internal_pb( pb, op_search );

cleanup:
	if ( free_filter ) {
		slapi_filter_free( pb->pb_op->ors_filter, 1 );
		pb->pb_op->ors_filter = NULL;
	}

	slapi_pblock_delete_param( pb, SLAPI_X_INTOP_RESULT_CALLBACK );
	slapi_pblock_delete_param( pb, SLAPI_X_INTOP_SEARCH_ENTRY_CALLBACK );
	slapi_pblock_delete_param( pb, SLAPI_X_INTOP_REFERRAL_ENTRY_CALLBACK );
	slapi_pblock_delete_param( pb, SLAPI_X_INTOP_CALLBACK_DATA );

	return 0;
}

static int pam_uid2dn(nssov_info *ni, Operation *op,
	struct paminfo *pi)
{
	struct berval sdn;

	BER_BVZERO(&pi->dn);

	if (!isvalidusername(&pi->uid)) {
		Debug(LDAP_DEBUG_ANY,"nssov_pam_uid2dn(%s): invalid user name\n",
			pi->uid.bv_val,0,0);
		return NSLCD_PAM_USER_UNKNOWN;
	}

	if (ni->ni_pam_opts & NI_PAM_SASL2DN) {
		int hlen = global_host_bv.bv_len;

		/* cn=<service>+uid=<user>,cn=<host>,cn=pam,cn=auth */
		sdn.bv_len = pi->uid.bv_len + pi->svc.bv_len + hlen +
			STRLENOF( "cn=+uid=,cn=,cn=pam,cn=auth" );
		sdn.bv_val = op->o_tmpalloc( sdn.bv_len + 1, op->o_tmpmemctx );
		sprintf(sdn.bv_val, "cn=%s+uid=%s,cn=%s,cn=pam,cn=auth",
			pi->svc.bv_val, pi->uid.bv_val, global_host_bv.bv_val);
		slap_sasl2dn(op, &sdn, &pi->dn, 0);
		op->o_tmpfree( sdn.bv_val, op->o_tmpmemctx );
	}

	/* If no luck, do a basic uid search */
	if (BER_BVISEMPTY(&pi->dn) && (ni->ni_pam_opts & NI_PAM_UID2DN)) {
		nssov_uid2dn(op, ni, &pi->uid, &pi->dn);
		if (!BER_BVISEMPTY(&pi->dn)) {
			sdn = pi->dn;
			dnNormalize( 0, NULL, NULL, &sdn, &pi->dn, op->o_tmpmemctx );
		}
	}
	if (BER_BVISEMPTY(&pi->dn)) {
		return NSLCD_PAM_USER_UNKNOWN;
	}
	return 0;
}

/* Conforms to RFC4510 re: Criticality, original RFC2891 spec is broken
 * Also see ITS#7253 for discussion
 */
static int sss_parseCtrl(
	Operation		*op,
	SlapReply		*rs,
	LDAPControl		*ctrl )
{
	BerElementBuffer	berbuf;
	BerElement			*ber;
	ber_tag_t		tag;
	ber_len_t		len;
	int					i;
	sort_ctrl	*sc;

	rs->sr_err = LDAP_PROTOCOL_ERROR;

	if ( op->o_ctrlflag[sss_cid] > SLAP_CONTROL_IGNORED ) {
		rs->sr_text = "sorted results control specified multiple times";
	} else if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
		rs->sr_text = "sorted results control value is absent";
	} else if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
		rs->sr_text = "sorted results control value is empty";
	} else {
		rs->sr_err = LDAP_SUCCESS;
	}
	if ( rs->sr_err != LDAP_SUCCESS )
		return rs->sr_err;

	op->o_ctrlflag[sss_cid] = ctrl->ldctl_iscritical ?
		SLAP_CONTROL_CRITICAL : SLAP_CONTROL_NONCRITICAL;

	ber = (BerElement *)&berbuf;
	ber_init2( ber, &ctrl->ldctl_value, 0 );
	i = count_key( ber );

	sc = op->o_tmpalloc( sizeof(sort_ctrl) +
		(i-1) * sizeof(sort_key), op->o_tmpmemctx );
	sc->sc_nkeys = i;
	op->o_controls[sss_cid] = sc;

	/* peel off initial sequence */
	ber_scanf( ber, "{" );

	i = 0;
	do {
		if ( build_key( ber, rs, &sc->sc_keys[i] ) != LDAP_SUCCESS )
			break;
		i++;
		tag = ber_peek_tag( ber, &len );
	} while ( tag != LBER_DEFAULT );

	return rs->sr_err;
}

ID ndb_tool_dn2id_get(
	Backend *be,
	struct berval *dn
)
{
	struct ndb_info *ni = (struct ndb_info *) be->be_private;
	NdbArgs NA;
	NdbRdns rdns;
	Entry e;
	char text[1024];
	Operation op = {0};
	Opheader ohdr = {0};
	int rc;

	if ( BER_BVISEMPTY(dn) )
		return 0;

	NA.ndb = myNdb;
	NA.txn = myNdb->startTransaction();
	if ( !NA.txn ) {
		snprintf( text, sizeof(text),
			"startTransaction failed: %s (%d)",
			myNdb->getNdbError().message, myNdb->getNdbError().code );
		Debug( LDAP_DEBUG_ANY,
			"=> " LDAP_XSTRING(ndb_tool_dn2id_get) ": %s\n",
			 text, 0, 0 );
		return NOID;
	}
	if ( myOcList ) {
		ber_bvarray_free( myOcList );
		myOcList = NULL;
	}
	op.o_hdr = &ohdr;
	op.o_bd = be;
	op.o_tmpmemctx = NULL;
	op.o_tmpmfuncs = &ch_mfuncs;

	NA.e = &e;
	e.e_name = *dn;
	NA.rdns = &rdns;
	NA.ocs = NULL;
	rc = ndb_entry_get_info( &op, &NA, 0, NULL );
	myOcList = NA.ocs;
	NA.txn->close();
	if ( rc )
		return NOID;

	myDn = *dn;

	return e.e_id;
}

int
unload_extop(
	const struct berval *ext_oid,
	SLAP_EXTOP_MAIN_FN *ext_main,
	unsigned flags )
{
	struct berval		oidm = BER_BVNULL;
	struct extop_list	*ext, **extp;

	/* oid must be given */
	if ( ext_oid == NULL || BER_BVISNULL( ext_oid ) ||
		BER_BVISEMPTY( ext_oid ) )
	{
		return -1; 
	}

	/* if it's not an oid, check if it's a macto */
	if ( numericoidValidate( NULL, (struct berval *)ext_oid ) !=
		LDAP_SUCCESS )
	{
		oidm.bv_val = oidm_find( ext_oid->bv_val );
		if ( oidm.bv_val == NULL ) {
			return -1;
		}
		oidm.bv_len = strlen( oidm.bv_val );
		ext_oid = &oidm;
	}

	/* lookup the oid */
	for ( extp = &supp_ext_list; *extp; extp = &(*extp)->next ) {
		if ( bvmatch( ext_oid, &(*extp)->oid ) ) {
			/* if ext_main is given, only remove if it matches */
			if ( ext_main != NULL && (*extp)->ext_main != ext_main ) {
				return -1;
			}
			break;
		}
	}

	if ( *extp == NULL ) {
		return -1;
	}

	ext = *extp;
	*extp = (*extp)->next;

	ch_free( ext );

	return 0;
}

static int
slapi_op_bind_callback( Operation *op, SlapReply *rs, int prc )
{
	switch ( prc ) {
	case SLAPI_BIND_SUCCESS:
		/* Continue with backend processing */
		break;
	case SLAPI_BIND_FAIL:
		/* Failure, frontend (that's us) sends result */
		rs->sr_err = LDAP_INVALID_CREDENTIALS;
		send_ldap_result( op, rs );
		return rs->sr_err;
		break;
	case SLAPI_BIND_ANONYMOUS: /* undocumented */
	default: /* plugin sent result or no plugins called */
		BER_BVZERO( &op->orb_edn );

		if ( rs->sr_err == LDAP_SUCCESS ) {
			/*
			 * Plugin will have called slapi_pblock_set(LDAP_CONN_DN) which
			 * will have set conn->c_dn and conn->c_ndn
			 */
			if ( BER_BVISNULL( &op->o_conn->c_ndn ) && prc == 1 ) {
				/* No plugins were called; continue processing */
				return LDAP_SUCCESS;
			}
			ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
			if ( !BER_BVISEMPTY( &op->o_conn->c_ndn ) ) {
				ber_len_t max = sockbuf_max_incoming_auth;
				ber_sockbuf_ctrl( op->o_conn->c_sb,
					LBER_SB_OPT_SET_MAX_INCOMING, &max );
			}
			ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );

			/* log authorization identity */
			Statslog( LDAP_DEBUG_STATS,
				"%s BIND dn=\"%s\" mech=%s (SLAPI) ssf=0\n",
				op->o_log_prefix,
				BER_BVISNULL( &op->o_conn->c_dn )
					? "<empty>" : op->o_conn->c_dn.bv_val,
				BER_BVISNULL( &op->orb_mech )
					? "<empty>" : op->orb_mech.bv_val, 0, 0 );

			return -1;
		}
		break;
	}

	return rs->sr_err;
}

static int
rdnval_is_valid( AttributeDescription *desc, struct berval *value )
{
	if ( desc->ad_type->sat_syntax == slap_schema.si_syn_directoryString ) {
		return 1;
	}

	if ( desc->ad_type->sat_syntax == syn_IA5String
		&& !BER_BVISEMPTY( value ) )
	{
		return 1;
	}

	return 0;
}

static int
aci_list_get_rights(
	struct berval	*list,
	struct berval	*attr,
	struct berval	*val,
	slap_access_t	*grant,
	slap_access_t	*deny )
{
	struct berval	perm, actn, baseattr;
	slap_access_t	*mask;
	int		i, found;

	if ( attr == NULL || BER_BVISEMPTY( attr ) ) {
		attr = (struct berval *)&aci_bv[ ACI_BV_ENTRY ];

	} else if ( acl_get_part( attr, 0, ';', &baseattr ) > 0 ) {
		attr = &baseattr;
	}
	found = 0;
	ACL_INIT(*grant);
	ACL_INIT(*deny);
	/* loop through each permissions clause */
	for ( i = 0; acl_get_part( list, i, '$', &perm ) >= 0; i++ ) {
		if ( acl_get_part( &perm, 0, ';', &actn ) < 0 ) {
			continue;
		}

		if ( ber_bvstrcasecmp( &aci_bv[ ACI_BV_GRANT ], &actn ) == 0 ) {
			mask = grant;

		} else if ( ber_bvstrcasecmp( &aci_bv[ ACI_BV_DENY ], &actn ) == 0 ) {
			mask = deny;

		} else {
			continue;
		}

		*mask |= aci_list_get_attr_rights( &perm, attr, val );
		*mask |= aci_list_get_attr_rights( &perm, &aci_bv[ ACI_BV_BR_ALL ], NULL );

		if ( *mask != ACL_PRIV_NONE ) {
			found = 1;
		}
	}

	return found;
}

int
dnssrv_back_bind(
	Operation	*op,
	SlapReply	*rs )
{
	Debug( LDAP_DEBUG_TRACE, "DNSSRV: bind dn=\"%s\" (%d)\n",
		BER_BVISNULL( &op->o_req_dn ) ? "" : op->o_req_dn.bv_val, 
		op->orb_method, 0 );

	/* allow rootdn as a means to auth without the need to actually
 	 * contact the proxied DSA */
	switch ( be_rootdn_bind( op, NULL ) ) {
	case LDAP_SUCCESS:
		/* frontend will send result */
		return rs->sr_err;

	default:
		/* treat failure and like any other bind, otherwise
		 * it could reveal the DN of the rootdn */
		break;
	}

	if ( !BER_BVISNULL( &op->orb_cred ) &&
		!BER_BVISEMPTY( &op->orb_cred ) )
	{
		/* simple bind */
		Statslog( LDAP_DEBUG_STATS,
		   	"%s DNSSRV BIND dn=\"%s\" provided cleartext passwd\n",
	   		op->o_log_prefix,
			BER_BVISNULL( &op->o_req_dn ) ? "" : op->o_req_dn.bv_val , 0, 0, 0 );

		send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
			"you shouldn't send strangers your password" );

	} else {
		/* unauthenticated bind */
		/* NOTE: we're not going to get here anyway:
		 * unauthenticated bind is dealt with by the frontend */
		Debug( LDAP_DEBUG_TRACE, "DNSSRV: BIND dn=\"%s\"\n",
			BER_BVISNULL( &op->o_req_dn ) ? "" : op->o_req_dn.bv_val, 0, 0 );

		send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
			"anonymous bind expected" );
	}

	return 1;
}

/*
 * Matches given berval to array of bervals
 * Returns:
 *      >=0 if one if the array elements equals to this berval
 *       -1 if string was not found in array
 */
static int
bv_getcaseidx(
	struct berval *bv,
	const struct berval *arr[] )
{
	int i;

	if ( BER_BVISEMPTY( bv ) ) {
		return -1;
	}

	for ( i = 0; arr[ i ] != NULL ; i++ ) {
		if ( ber_bvstrcasecmp( bv, arr[ i ] ) == 0 ) {
 			return i;
		}
	}

  	return -1;
}