B.2 Read An Entry

Appendix B:

B.2.1 Read Using LDAP C-API

/*
 * Copyright (c) 1996.  Netscape Communications Corporation.  All
 * rights reserved.
 * 
 * Search the directory for the specific entry
 * "cn=Barbara Jensen, ou=Product Development, o=Ace Industry, c=US".
 * Retrieve all attributes from the entry.
 *
 */
#include "examples.h"
int
main( int argc, char **argv )
{
    LDAP        *ld;
    LDAPMessage *result, *e;
    BerElement  *ber;
    char        *a, *dn;
    char        **vals;
    int         i;
    /* get a handle to an LDAP connection */
    if ( (ld = ldap_init( MY_HOST, MY_PORT )) == NULL ) {
        perror( "ldap_init");
        return( 1 );
    }
    /* authenticate to the directory as nobody */
    if ( ldap_simple_bind_s( ld, NULL, NULL ) != LDAP_SUCCESS ) {
        ldap_perror( ld, "ldap_simple_bind_s" );
        return( 1 );
    }
    /* search for Babs entry */
    if ( ldap_search_s( ld, ENTRYDN, LDAP_SCOPE_SUBTREE,
            "(objectclass=*)", NULL, 0, &result ) != LDAP_SUCCESS ) {
        ldap_perror( ld, "ldap_search_s" );
        return( 1 );
    }
    /* for each entry print out name + all attrs and values */
    for ( e = ldap_first_entry( ld, result ); e != NULL;
            e = ldap_next_entry( ld, e ) ) {
        if ( (dn = ldap_get_dn( ld, e )) != NULL ) {
            printf( "dn: %s\n", dn );
            ldap_memfree( dn );
        }
        for ( a = ldap_first_attribute( ld, e, &ber );
                a != NULL; a = ldap_next_attribute( ld, e, ber ) ) {
            if ((vals = ldap_get_values( ld, e, a)) != NULL ) {
                for ( i = 0; vals[i] != NULL; i++ ) {
                    printf( "%s: %s\n", a, vals[i] );
                }
                ldap_value_free( vals );
            }
            ldap_memfree( a );
        }
        if ( ber != NULL ) {
            ber_free( ber, 0 );
        }
        printf( "\n" );
    }
    ldap_msgfree( result );
    ldap_unbind( ld );
    return( 0 );
}

B.2.2 Read Using JNDI

/*
 * @(#)Rdentry.java     1.2 99/07/26 
 *
 * Copyright (c) 1997, 1999, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
import java.util.Hashtable;
 
import javax.naming.*;
import javax.naming.directory.*;
/* 
 * Search the directory for the specific entry
 * "cn=Barbara Jensen, ou=Product Development, o=Ace Industry, c=US".
 * Retrieve all attributes from the entry.
 *
 * [Equivalent to rdentry.c in Netscape SDK]
 */
class Rdentry {
public static void main(String[] args) {
    Hashtable env = new Hashtable(5, 0.75f);
    /*
     * Specify the initial context implementation to use.
     * This could also be set by using the -D option to the java program.
     * For example,
     *   java -Djava.naming.factory.initial=com.sun.jndi.ldap.LdapCtxFactory \
     *       Rdentry
     */
    env.put(Context.INITIAL_CONTEXT_FACTORY, Env.INITCTX);
    /* Specify host and port to use for directory service */
    env.put(Context.PROVIDER_URL, Env.MY_SERVICE);
    try {
        /* get a handle to an Initial DirContext */
        DirContext ctx = new InitialDirContext(env);
        /* Read Babs' entry */
        Attributes attrs = ctx.getAttributes(Env.ENTRYDN);
        if (attrs == null) {
            System.out.println(Env.ENTRYDN + "has no attributes");
        } else {
            /* print each attribute */
            for (NamingEnumeration ae = attrs.getAll();
                 ae.hasMoreElements();) {
                Attribute attr = (Attribute)ae.next();
                String attrId = attr.getID();
                /* print each value */
                for (NamingEnumeration vals = attr.getAll();
                     vals.hasMoreElements();
                     System.out.println(attrId + ": " + vals.nextElement()))
                    ;
            }
        }
    } catch (NamingException e) {
        System.err.println("Rdentry example failed.");
        e.printStackTrace();
    }
}
}

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