/* Copyright (C) 1997-2005 Luke Howard.
This file is part of the nss_ldap library.
Contributed by Luke Howard, <lukeh@padl.com>, 1997.
The nss_ldap 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.
The nss_ldap 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 the nss_ldap library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_IRS_H
#include <errno.h>
#include "irs-nss.h"
/* $Id: irs-hosts.c,v 2.26 2005/05/20 05:30:39 lukeh Exp $ */
#ifdef HAVE_USERSEC_H
void *ho_pvtinit (void);
#endif
IRS_EXPORT void ho_close (struct irs_ho *this);
IRS_EXPORT struct hostent *ho_byname (struct irs_ho *this, const char *name);
IRS_EXPORT struct hostent *ho_byname2 (struct irs_ho *this, const char *name,
int af);
IRS_EXPORT struct hostent *ho_byaddr (struct irs_ho *this, const void *addr,
int len, int af);
IRS_EXPORT struct hostent *ho_next (struct irs_ho *this);
IRS_EXPORT void ho_rewind (struct irs_ho *this);
IRS_EXPORT void ho_minimize (struct irs_ho *this);
static const u_char mapped[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };
static const u_char tunnelled[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
struct pvt
{
struct hostent result;
char buffer[NSS_BUFLEN_HOSTS];
ent_context_t *state;
};
IRS_EXPORT struct hostent *
ho_byname (struct irs_ho *this, const char *name)
{
NSS_STATUS s;
struct pvt *pvt = (struct pvt *) this->private;
ldap_args_t a;
LA_INIT (a);
LA_STRING (a) = name;
LA_TYPE (a) = LA_TYPE_STRING;
s = _nss_ldap_getbyname (&a,
&pvt->result,
pvt->buffer,
sizeof (pvt->buffer),
&errno,
_nss_ldap_filt_gethostbyname,
LM_HOSTS, _nss_ldap_parse_hostv4);
if (s != NSS_SUCCESS)
{
MAP_H_ERRNO (s, h_errno);
return NULL;
}
return &pvt->result;
}
IRS_EXPORT struct hostent *
ho_byaddr (struct irs_ho *this, const void *addr, int len, int af)
{
struct pvt *pvt = (struct pvt *) this->private;
char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];
const u_char *uaddr = addr;
NSS_STATUS s;
ldap_args_t a;
if (af == AF_INET6 && len == IN6ADDRSZ
&& (!memcmp (uaddr, mapped, sizeof mapped) ||
!memcmp (uaddr, tunnelled, sizeof tunnelled)))
{
/* Unmap. */
addr = (u_char *) addr + sizeof mapped;
uaddr += sizeof mapped;
af = AF_INET;
len = INADDRSZ;
}
if (inet_ntop (af, uaddr, tmp, sizeof tmp) == NULL)
{
h_errno = NETDB_INTERNAL;
return (NULL);
}
LA_INIT (a);
LA_STRING (a) = tmp;
LA_TYPE (a) = LA_TYPE_STRING;
s = _nss_ldap_getbyname (&a,
&pvt->result,
pvt->buffer,
sizeof (pvt->buffer),
&errno,
_nss_ldap_filt_gethostbyaddr,
LM_HOSTS, _nss_ldap_parse_hostv4);
if (s != NSS_SUCCESS)
{
MAP_H_ERRNO (s, h_errno);
return NULL;
}
return &pvt->result;
}
IRS_EXPORT void
ho_close (struct irs_ho *this)
{
LOOKUP_ENDENT (this);
#ifdef HAVE_USERSEC_H
free (this->private);
free (this);
#endif
}
IRS_EXPORT struct hostent *
ho_next (struct irs_ho *this)
{
struct pvt *pvt = (struct pvt *) this->private;
NSS_STATUS s;
s = _nss_ldap_getent (&pvt->state,
&pvt->result,
pvt->buffer,
sizeof (pvt->buffer),
&errno,
_nss_ldap_filt_gethostent,
LM_HOSTS, _nss_ldap_parse_hostv4);
if (s != NSS_SUCCESS)
{
MAP_H_ERRNO (s, h_errno);
return NULL;
}
return &pvt->result;
}
IRS_EXPORT void
ho_rewind (struct irs_ho *this)
{
LOOKUP_SETENT (this);
}
IRS_EXPORT void
ho_minimize (struct irs_ho *this)
{
}
#ifdef HAVE_USERSEC_H
void *
ho_pvtinit (void)
#else
struct irs_ho *
irs_ldap_ho (struct irs_acc *this)
#endif
{
struct irs_ho *ho;
struct pvt *pvt;
ho = calloc (1, sizeof (*ho));
if (ho == NULL)
return NULL;
pvt = calloc (1, sizeof (*pvt));
if (pvt == NULL)
{
free (ho);
return NULL;
}
pvt->state = NULL;
ho->private = pvt;
ho->close = ho_close;
ho->next = ho_next;
ho->byname = ho_byname;
/* ho->byname2 = ho_byname2; */
ho->byaddr = ho_byaddr;
ho->rewind = ho_rewind;
ho->minimize = ho_minimize;
return ho;
}
#endif /*HAVE_IRS_H */