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/*
service.c - service entry lookup routines
This file was part of the nss-ldap library (as ldap-service.c)
which has been forked into the nss-ldapd library.
Copyright (C) 1997-2005 Luke Howard
Copyright (C) 2006 West Consulting
Copyright (C) 2006 Arthur de Jong
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA
*/
/*
Determine the canonical name of the RPC with _nss_ldap_getrdnvalue(),
and assign any values of "cn" which do NOT match this canonical name
as aliases.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <netinet/in.h>
#include <errno.h>
#ifdef HAVE_SYS_BYTEORDER_H
#include <sys/byteorder.h>
#endif
#ifdef HAVE_LBER_H
#include <lber.h>
#endif
#ifdef HAVE_LDAP_H
#include <ldap.h>
#endif
#if defined(HAVE_THREAD_H)
#include <thread.h>
#elif defined(HAVE_PTHREAD_H)
#include <pthread.h>
#endif
#include "ldap-nss.h"
#include "util.h"
static struct ent_context *serv_context = NULL;
static enum nss_status _nss_ldap_parse_serv (LDAPMessage *e,
struct ldap_state *state,
void *result,char *buffer,size_t buflen)
{
struct servent *service = (struct servent *)result;
char *port;
enum nss_status stat = NSS_STATUS_SUCCESS;
/* this is complicated and ugly, because some git (me) specified that service
* entries should expand to two entities (or more) if they have multi-valued
* ipServiceProtocol fields.
*/
if (state->ls_type == LS_TYPE_KEY)
{
if (state->ls_info.ls_key == NULL)
{
/* non-deterministic behaviour is ok */
stat =
_nss_ldap_assign_attrval (e, AT (ipServiceProtocol),
&service->s_proto, &buffer, &buflen);
if (stat != NSS_STATUS_SUCCESS)
{
return stat;
}
}
else
{
register int len;
len = strlen (state->ls_info.ls_key);
if (buflen < (size_t) (len + 1))
{
return NSS_STATUS_TRYAGAIN;
}
strncpy (buffer, state->ls_info.ls_key, len);
buffer[len] = '\0';
service->s_proto = buffer;
buffer += len + 1;
buflen -= len + 1;
}
}
else
{
char **vals = _nss_ldap_get_values (e, AT (ipServiceProtocol));
int len;
if (vals == NULL)
{
state->ls_info.ls_index = -1;
return NSS_STATUS_NOTFOUND;
}
switch (state->ls_info.ls_index)
{
case 0:
/* last time. decrementing ls_index to -1 AND returning !NSS_STATUS_SUCCESS
will force this entry to be discarded.
*/
stat = NSS_STATUS_NOTFOUND;
break;
case -1:
/* first time */
state->ls_info.ls_index = ldap_count_values (vals);
/* fall off to default ... */
default:
len = strlen (vals[state->ls_info.ls_index - 1]);
if (buflen < (size_t) (len + 1))
{
return NSS_STATUS_TRYAGAIN;
}
strncpy (buffer, vals[state->ls_info.ls_index - 1], len);
buffer[len] = '\0';
service->s_proto = buffer;
buffer += len + 1;
buflen -= len + 1;
stat = NSS_STATUS_SUCCESS;
}
ldap_value_free (vals);
state->ls_info.ls_index--;
}
if (stat != NSS_STATUS_SUCCESS)
{
return stat;
}
stat =
_nss_ldap_getrdnvalue (e, ATM (LM_SERVICES, cn), &service->s_name,
&buffer, &buflen);
if (stat != NSS_STATUS_SUCCESS)
{
return stat;
}
stat =
_nss_ldap_assign_attrvals (e, ATM (LM_SERVICES, cn), service->s_name,
&service->s_aliases, &buffer, &buflen, NULL);
if (stat != NSS_STATUS_SUCCESS)
{
return stat;
}
stat =
_nss_ldap_assign_attrval (e, AT (ipServicePort), &port, &buffer,
&buflen);
if (stat != NSS_STATUS_SUCCESS)
{
return stat;
}
service->s_port = htons (atoi (port));
return NSS_STATUS_SUCCESS;
}
enum nss_status _nss_ldap_getservbyname_r(const char *name,
const char *proto,
struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
struct ldap_args a;
LA_INIT (a);
LA_STRING (a) = name;
LA_TYPE (a) = (proto == NULL) ? LA_TYPE_STRING : LA_TYPE_STRING_AND_STRING;
LA_STRING2 (a) = proto;
return _nss_ldap_getbyname (&a, result, buffer, buflen, errnop,
((proto == NULL) ? _nss_ldap_filt_getservbyname
: _nss_ldap_filt_getservbynameproto),
LM_SERVICES, _nss_ldap_parse_serv);
}
enum nss_status _nss_ldap_getservbyport_r(int port,
const char *proto,
struct servent *result,
char *buffer,size_t buflen,int *errnop)
{
struct ldap_args a;
LA_INIT (a);
LA_NUMBER (a) = htons (port);
LA_TYPE (a) = (proto == NULL) ? LA_TYPE_NUMBER : LA_TYPE_NUMBER_AND_STRING;
LA_STRING2 (a) = proto;
return _nss_ldap_getbyname (&a, result, buffer, buflen, errnop,
(proto ==
NULL) ? _nss_ldap_filt_getservbyport :
_nss_ldap_filt_getservbyportproto,
LM_SERVICES, _nss_ldap_parse_serv);
}
enum nss_status _nss_ldap_setservent(void)
{
LOOKUP_SETENT(serv_context);
}
enum nss_status _nss_ldap_getservent_r(struct servent *result,char *buffer,size_t buflen,
int *errnop)
{
LOOKUP_GETENT(serv_context, result, buffer, buflen, errnop,
_nss_ldap_filt_getservent, LM_SERVICES,
_nss_ldap_parse_serv, LDAP_NSS_BUFLEN_DEFAULT);
}
enum nss_status _nss_ldap_endservent(void)
{
LOOKUP_ENDENT(serv_context);
}
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