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   ber_first_element    ( 3 )

OpenLDAP LBER библиотечные подпрограммы базовых правил декодирования (OpenLDAP LBER simplified Basic Encoding Rules library routines for decoding)
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Примеры (Examples)

Assume the variable ber contains a lightweight BER encoding of
       the following ASN.1 object:


             AlmostASearchRequest := SEQUENCE {
                 baseObject      DistinguishedName,
                 scope           ENUMERATED {
                     baseObject    (0),
                     singleLevel   (1),
                     wholeSubtree  (2)
                 },
                 derefAliases    ENUMERATED {
                     neverDerefaliases   (0),
                     derefInSearching    (1),
                     derefFindingBaseObj (2),
                     alwaysDerefAliases  (3)
                 },
                 sizelimit       INTEGER (0 .. 65535),
                 timelimit       INTEGER (0 .. 65535),
                 attrsOnly       BOOLEAN,
                 attributes      SEQUENCE OF AttributeType
             }


       The element can be decoded using ber_scanf() as follows.


             ber_int_t    scope, deref, size, time, attrsonly;
             char   *dn, **attrs;
             ber_tag_t tag;


             tag = ber_scanf( ber, "{aeeiib{v}}",
                 &dn, &scope, &deref,
                 &size, &time, &attrsonly, &attrs );


             if( tag == LBER_ERROR ) {
                     /* error */
             } else {
                     /* success */
             }


             ber_memfree( dn );
             ber_memvfree( attrs );