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