Commit 73b9ffc3 authored by Kurt Zeilenga's avatar Kurt Zeilenga
Browse files

Add referral generator

parent 09e087c8
/* referral.c - DNS SRV backend referral handler */
/* $OpenLDAP$ */
/*
* Copyright 2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "external.h"
int
dnssrv_back_referrals(
Backend *be,
Connection *conn,
Operation *op,
const char *dn,
const char *ndn,
const char **text )
{
int i;
int rc = LDAP_OTHER;
char *domain = NULL;
char *hostlist = NULL;
char **hosts = NULL;
struct berval **urls = NULL;
if( ndn == NULL || *ndn == '\0' ) {
*text = "operation upon null (empty) DN disallowed";
return LDAP_UNWILLING_TO_PERFORM;
}
if( get_manageDSAit( op ) ) {
if( op->o_tag == LDAP_REQ_SEARCH ) {
return LDAP_SUCCESS;
}
*text = "DNS SRV problem processing manageDSAit control";
return LDAP_OTHER;
}
if( ldap_dn2domain( dn, &domain ) ) {
send_ldap_result( conn, op, LDAP_REFERRAL,
NULL, NULL, default_referral, NULL );
return LDAP_REFERRAL;
}
Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> domain=\"%s\"\n",
dn == NULL ? "" : dn,
domain == NULL ? "" : domain,
0 );
if( rc = ldap_domain2hostlist( domain, &hostlist ) ) {
Debug( LDAP_DEBUG_TRACE, "DNSSRV: domain2hostlist returned %d\n",
rc, 0, 0 );
*text = "no DNS SRV RR available for DN";
rc = LDAP_NO_SUCH_OBJECT;
goto done;
}
hosts = str2charray( hostlist, " " );
if( hosts == NULL ) {
Debug( LDAP_DEBUG_TRACE, "DNSSRV: str2charrary error\n", 0, 0, 0 );
*text = "problem processing DNS SRV records for DN";
goto done;
}
for( i=0; hosts[i] != NULL; i++) {
struct berval *url = ch_malloc( sizeof( struct berval ) );
url->bv_len = sizeof("ldap://")-1 + strlen(hosts[i]);
url->bv_val = ch_malloc( url->bv_len + 1 );
strcpy( url->bv_val, "ldap://" );
strcpy( &url->bv_val[sizeof("ldap://")-1], hosts[i] );
if( ber_bvecadd( &urls, url ) < 0 ) {
ber_bvfree( url );
*text = "problem processing DNS SRV records for DN";
goto done;
}
}
Statslog( LDAP_DEBUG_STATS,
"conn=%ld op=%d DNSSRV p=%d dn=\"%s\" url=\"%s\"\n",
op->o_connid, op->o_opid, op->o_protocol, dn, urls[0]->bv_val );
Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> url=\"%s\"\n",
dn == NULL ? "" : dn,
urls[0]->bv_val, 0 );
send_ldap_result( conn, op, rc = LDAP_REFERRAL,
NULL, "DNS SRV generated referrals", urls, NULL );
done:
if( domain != NULL ) ch_free( domain );
if( hostlist != NULL ) ch_free( hostlist );
if( hosts != NULL ) charray_free( hosts );
ber_bvecfree( urls );
return rc;
}
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