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/*
network.c - network address entry lookup routines
This file was part of the nss-ldap library (as ldap-network.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
*/
/* parts based on nss_nis */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <sys/socket.h>
#include <errno.h>
#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"
#if defined(HAVE_USERSEC_H)
#define MAXALIASES 35
#define MAXADDRSIZE 4
#endif /* HAVE_USERSEC_H */
#define MAP_H_ERRNO(nss_status, herr) do { \
switch ((nss_status)) { \
case NSS_STATUS_SUCCESS: \
(herr) = 0; \
break; \
case NSS_STATUS_TRYAGAIN: \
(herr) = TRY_AGAIN; \
break; \
case NSS_STATUS_NOTFOUND: \
(herr) = HOST_NOT_FOUND;\
break; \
case NSS_STATUS_UNAVAIL: \
default: \
(herr) = NO_RECOVERY; \
break; \
} \
} while (0)
#define LOOKUP_SETENT(key) \
if (_nss_ldap_ent_context_init(&key) == NULL) \
return NSS_STATUS_UNAVAIL; \
return NSS_STATUS_SUCCESS
#define LOOKUP_ENDENT(key) \
_nss_ldap_enter(); \
_nss_ldap_ent_context_release(key); \
_nss_ldap_leave(); \
return NSS_STATUS_SUCCESS
static struct ent_context *net_context = NULL;
static enum nss_status
_nss_ldap_parse_net (LDAPMessage * e,
struct ldap_state * pvt,
void *result, char *buffer, size_t buflen)
{
char *tmp;
struct netent *network = (struct netent *) result;
enum nss_status stat;
/* IPv6 support ? XXX */
network->n_addrtype = AF_INET;
stat = _nss_ldap_assign_attrval (e, ATM (LM_NETWORKS, cn), &network->n_name,
&buffer, &buflen);
if (stat != NSS_STATUS_SUCCESS)
return stat;
stat =
_nss_ldap_assign_attrval (e, AT (ipNetworkNumber), &tmp, &buffer,
&buflen);
if (stat != NSS_STATUS_SUCCESS)
return stat;
network->n_net = inet_network (tmp);
stat =
_nss_ldap_assign_attrvals (e, ATM (LM_NETWORKS, cn), network->n_name,
&network->n_aliases, &buffer, &buflen, NULL);
if (stat != NSS_STATUS_SUCCESS)
return stat;
return NSS_STATUS_SUCCESS;
}
enum nss_status _nss_ldap_getnetbyname_r(const char *name,struct netent *result,
char *buffer,size_t buflen,int *errnop,
int *herrnop)
{
enum nss_status status;
struct ldap_args a;
LA_INIT (a);
LA_STRING (a) = name;
LA_TYPE (a) = LA_TYPE_STRING;
status = _nss_ldap_getbyname (&a,
result,
buffer,
buflen,
errnop,
_nss_ldap_filt_getnetbyname,
LM_NETWORKS, _nss_ldap_parse_net);
MAP_H_ERRNO (status, *herrnop);
return status;
}
enum nss_status _nss_ldap_getnetbyaddr_r(unsigned long addr,int type,
struct netent *result,char *buffer,size_t buflen,
int *errnop,int *herrnop)
{
struct in_addr in;
char buf[256];
int blen;
struct ldap_args a;
enum nss_status retval = NSS_STATUS_NOTFOUND;
LA_INIT (a);
LA_TYPE (a) = LA_TYPE_STRING;
in = inet_makeaddr (addr, 0);
strcpy (buf, inet_ntoa (in));
blen = strlen (buf);
LA_STRING (a) = buf;
while (1)
{
retval = _nss_ldap_getbyname (&a, result, buffer, buflen, errnop,
_nss_ldap_filt_getnetbyaddr,
LM_NETWORKS, _nss_ldap_parse_net);
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_NOTFOUND)
{
if (buf[blen - 2] == '.' && buf[blen - 1] == '\0')
{
buf[blen - 2] = '\0';
blen -= 2;
continue;
}
else
{
MAP_H_ERRNO (retval, *herrnop);
return NSS_STATUS_NOTFOUND;
}
}
else
{
MAP_H_ERRNO (retval, *herrnop);
return retval;
}
}
else
{
/* retval == NSS_STATUS_SUCCESS */
break;
}
}
MAP_H_ERRNO (NSS_STATUS_SUCCESS, *herrnop);
return retval;
}
enum nss_status _nss_ldap_setnetent(void)
{
LOOKUP_SETENT (net_context);
}
enum nss_status _nss_ldap_getnetent_r(struct netent *result,char *buffer,size_t buflen,
int *errnop,int *herrnop)
{
enum nss_status status;
status = _nss_ldap_getent (&net_context,
result,
buffer,
buflen,
errnop,
_nss_ldap_filt_getnetent,
LM_NETWORKS, _nss_ldap_parse_net);
MAP_H_ERRNO (status, *herrnop);
return status;
}
enum nss_status _nss_ldap_endnetent(void)
{
LOOKUP_ENDENT (net_context);
}
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