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/* ***** 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 ***** */
/*
* referral.c - routines for handling LDAPv3 referrals and references.
*/
#include "ldap-int.h"
LDAPMessage *
LDAP_CALL
ldap_first_reference( LDAP *ld, LDAPMessage *res )
{
if ( !NSLDAPI_VALID_LDAP_POINTER( ld ) || res == NULLMSG ) {
return( NULLMSG );
}
if ( res->lm_msgtype == LDAP_RES_SEARCH_REFERENCE ) {
return( res );
}
return( ldap_next_reference( ld, res ));
}
LDAPMessage *
LDAP_CALL
ldap_next_reference( LDAP *ld, LDAPMessage *ref )
{
if ( !NSLDAPI_VALID_LDAP_POINTER( ld ) || ref == NULLMSG ) {
return( NULLMSG ); /* punt */
}
for ( ref = ref->lm_chain; ref != NULLMSG; ref = ref->lm_chain ) {
if ( ref->lm_msgtype == LDAP_RES_SEARCH_REFERENCE ) {
return( ref );
}
}
return( NULLMSG );
}
int
LDAP_CALL
ldap_count_references( LDAP *ld, LDAPMessage *res )
{
int i;
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( -1 );
}
for ( i = 0; res != NULL; res = res->lm_chain ) {
if ( res->lm_msgtype == LDAP_RES_SEARCH_REFERENCE ) {
++i;
}
}
return( i );
}
/*
* returns an LDAP error code.
*/
int
LDAP_CALL
ldap_parse_reference( LDAP *ld, LDAPMessage *ref, char ***referralsp,
LDAPControl ***serverctrlsp, int freeit )
{
int err;
if ( !NSLDAPI_VALID_LDAP_POINTER( ld ) ||
!NSLDAPI_VALID_LDAPMESSAGE_REFERENCE_POINTER( ref )) {
return( LDAP_PARAM_ERROR );
}
err = nsldapi_parse_reference( ld, ref->lm_ber, referralsp,
serverctrlsp );
LDAP_SET_LDERRNO( ld, err, NULL, NULL );
if ( freeit ) {
ldap_msgfree( ref );
}
return( err );
}
/*
* returns an LDAP error code indicating success or failure of parsing
* does NOT set any error information inside "ld"
*/
int
nsldapi_parse_reference( LDAP *ld, BerElement *rber, char ***referralsp,
LDAPControl ***serverctrlsp )
{
int err;
BerElement ber;
char **refs;
/*
* Parse a searchResultReference message. These are used in LDAPv3
* and beyond and look like this:
*
* SearchResultReference ::= [APPLICATION 19] SEQUENCE OF LDAPURL
*
* all wrapped up in an LDAPMessage sequence which looks like this:
*
* LDAPMessage ::= SEQUENCE {
* messageID MessageID,
* SearchResultReference
* controls [0] Controls OPTIONAL
* }
*
* ldap_result() pulls out the message id, so by the time a result
* message gets here we are conveniently sitting at the start of the
* SearchResultReference itself.
*/
err = LDAP_SUCCESS; /* optimistic */
ber = *rber; /* struct copy */
if ( ber_scanf( &ber, "{v", &refs ) == LBER_ERROR ) {
err = LDAP_DECODING_ERROR;
} else if ( serverctrlsp != NULL ) {
/* pull out controls (if requested and any are present) */
if ( ber_scanf( &ber, "}" ) == LBER_ERROR ) {
err = LDAP_DECODING_ERROR;
} else {
err = nsldapi_get_controls( &ber, serverctrlsp );
}
}
if ( referralsp == NULL ) {
ldap_value_free( refs );
} else {
*referralsp = refs;
}
return( err );
}
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