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Diffstat (limited to 'ldap/c-sdk/libraries/libldap/compare.c')
| -rw-r--r-- | ldap/c-sdk/libraries/libldap/compare.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/ldap/c-sdk/libraries/libldap/compare.c b/ldap/c-sdk/libraries/libldap/compare.c new file mode 100644 index 000000000..6ccd0e8aa --- /dev/null +++ b/ldap/c-sdk/libraries/libldap/compare.c @@ -0,0 +1,194 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-1999 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ +/* + * Copyright (c) 1990 Regents of the University of Michigan. + * All rights reserved. + */ +/* + * compare.c + */ + +#if 0 +#ifndef lint +static char copyright[] = "@(#) Copyright (c) 1990 Regents of the University of Michigan.\nAll rights reserved.\n"; +#endif +#endif + +#include "ldap-int.h" + +/* + * ldap_compare - perform an ldap compare operation. The dn + * of the entry to compare to and the attribute and value to compare (in + * attr and value) are supplied. The msgid of the response is returned. + * + * Example: + * ldap_compare( ld, "c=us@cn=bob", "userPassword", "secret" ) + */ +int +LDAP_CALL +ldap_compare( LDAP *ld, const char *dn, const char *attr, const char *value ) +{ + int msgid; + struct berval bv; + + LDAPDebug( LDAP_DEBUG_TRACE, "ldap_compare\n", 0, 0, 0 ); + + bv.bv_val = (char *)value; + bv.bv_len = ( value == NULL ) ? 0 : strlen( value ); + + if ( ldap_compare_ext( ld, dn, attr, &bv, NULL, NULL, &msgid ) + == LDAP_SUCCESS ) { + return( msgid ); + } else { + return( -1 ); /* error is in ld handle */ + } +} + +int +LDAP_CALL +ldap_compare_ext( LDAP *ld, const char *dn, const char *attr, + const struct berval *bvalue, LDAPControl **serverctrls, + LDAPControl **clientctrls, int *msgidp ) +{ + BerElement *ber; + int rc, lderr; + + /* The compare request looks like this: + * CompareRequest ::= SEQUENCE { + * entry DistinguishedName, + * ava SEQUENCE { + * type AttributeType, + * value AttributeValue + * } + * } + * and must be wrapped in an LDAPMessage. + */ + + LDAPDebug( LDAP_DEBUG_TRACE, "ldap_compare_ext\n", 0, 0, 0 ); + + if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) { + return( LDAP_PARAM_ERROR ); + } + if ( attr == NULL || bvalue == NULL || bvalue->bv_len == 0 + || msgidp == NULL ) { + lderr = LDAP_PARAM_ERROR; + LDAP_SET_LDERRNO( ld, lderr, NULL, NULL ); + return( lderr ); + } + + if ( dn == NULL ) { + dn = ""; + } + + LDAP_MUTEX_LOCK( ld, LDAP_MSGID_LOCK ); + *msgidp = ++ld->ld_msgid; + LDAP_MUTEX_UNLOCK( ld, LDAP_MSGID_LOCK ); + + /* check the cache */ + if ( ld->ld_cache_on && ld->ld_cache_compare != NULL ) { + LDAP_MUTEX_LOCK( ld, LDAP_CACHE_LOCK ); + if ( (rc = (ld->ld_cache_compare)( ld, *msgidp, + LDAP_REQ_COMPARE, dn, attr, bvalue )) != 0 ) { + *msgidp = rc; + LDAP_MUTEX_UNLOCK( ld, LDAP_CACHE_LOCK ); + return( LDAP_SUCCESS ); + } + LDAP_MUTEX_UNLOCK( ld, LDAP_CACHE_LOCK ); + } + + /* create a message to send */ + if (( lderr = nsldapi_alloc_ber_with_options( ld, &ber )) + != LDAP_SUCCESS ) { + return( lderr ); + } + + if ( ber_printf( ber, "{it{s{so}}", *msgidp, LDAP_REQ_COMPARE, dn, + attr, bvalue->bv_val, bvalue->bv_len ) + == -1 ) { + lderr = LDAP_ENCODING_ERROR; + LDAP_SET_LDERRNO( ld, lderr, NULL, NULL ); + ber_free( ber, 1 ); + return( lderr ); + } + + if (( lderr = nsldapi_put_controls( ld, serverctrls, 1, ber )) + != LDAP_SUCCESS ) { + ber_free( ber, 1 ); + return( lderr ); + } + + /* send the message */ + rc = nsldapi_send_initial_request( ld, *msgidp, LDAP_REQ_COMPARE, + (char *)dn, ber ); + *msgidp = rc; + return( rc < 0 ? LDAP_GET_LDERRNO( ld, NULL, NULL ) : LDAP_SUCCESS ); +} + +int +LDAP_CALL +ldap_compare_s( LDAP *ld, const char *dn, const char *attr, + const char *value ) +{ + struct berval bv; + + bv.bv_val = (char *)value; + bv.bv_len = ( value == NULL ) ? 0 : strlen( value ); + + return( ldap_compare_ext_s( ld, dn, attr, &bv, NULL, NULL )); +} + +int +LDAP_CALL +ldap_compare_ext_s( LDAP *ld, const char *dn, const char *attr, + const struct berval *bvalue, LDAPControl **serverctrls, + LDAPControl **clientctrls ) +{ + int err, msgid; + LDAPMessage *res; + + if (( err = ldap_compare_ext( ld, dn, attr, bvalue, serverctrls, + clientctrls, &msgid )) != LDAP_SUCCESS ) { + return( err ); + } + + if ( ldap_result( ld, msgid, 1, (struct timeval *)NULL, &res ) + == -1 ) { + return( LDAP_GET_LDERRNO( ld, NULL, NULL ) ); + } + + return( ldap_result2error( ld, res, 1 ) ); +} |