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/*
ethers.c - NSS lookup functions for ethers database
Copyright (C) 2006 West Consulting
Copyright (C) 2006, 2007, 2008, 2010 Arthur de Jong
Copyright (C) 2010 Symas Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "config.h"
#include <string.h>
#include <errno.h>
#include "prototypes.h"
#include "common.h"
#include "compat/attrs.h"
/* read an ethernet entry from the stream */
static nss_status_t read_etherent(
TFILE *fp,struct etherent *result,
char *buffer,size_t buflen,int *errnop)
{
int32_t tmpint32;
size_t bufptr=0;
READ_BUF_STRING(fp,result->e_name);
READ_TYPE(fp,result->e_addr,uint8_t[6]);
return NSS_STATUS_SUCCESS;
}
#ifdef NSS_FLAVOUR_GLIBC
/* map a hostname to the corresponding ethernet address */
nss_status_t _nss_ldap_gethostton_r(
const char *name,struct etherent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_BYNAME(NSLCD_ACTION_ETHER_BYNAME,buffer,buflen,
name,
read_etherent(fp,result,buffer,buflen,errnop));
return retv;
}
/* map an ethernet address to the corresponding hostname */
nss_status_t _nss_ldap_getntohost_r(
const struct ether_addr *addr,struct etherent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_BYTYPE(NSLCD_ACTION_ETHER_BYETHER,buffer,buflen,
*addr,uint8_t[6],
read_etherent(fp,result,buffer,buflen,errnop));
return retv;
}
/* thread-local file pointer to an ongoing request */
static __thread TFILE *etherentfp;
/* open a connection to read all ether entries */
nss_status_t _nss_ldap_setetherent(int UNUSED(stayopen))
{
NSS_SETENT(etherentfp);
}
/* read a single ethernet entry from the stream */
nss_status_t _nss_ldap_getetherent_r(
struct etherent *result,
char *buffer,size_t buflen,int *errnop)
{
NSS_GETENT(etherentfp,NSLCD_ACTION_ETHER_ALL,buffer,buflen,
read_etherent(etherentfp,result,buffer,buflen,errnop));
return retv;
}
/* close the stream opened with setetherent() above */
nss_status_t _nss_ldap_endetherent(void)
{
NSS_ENDENT(etherentfp);
}
#endif /* NSS_FLAVOUR_GLIBC */
#ifdef NSS_FLAVOUR_SOLARIS
#ifndef NSS_BUFLEN_ETHERS
#define NSS_BUFLEN_ETHERS 1024
#endif /* NSS_BUFLEN_ETHERS */
#define errnop &errno
/* map a hostname to the corresponding ethernet address */
static nss_status_t _xnss_ldap_gethostton_r(nss_backend_t UNUSED(*be),void *args)
{
struct etherent result;
char buffer[NSS_BUFLEN_ETHERS];
const char *name=(NSS_ARGS(args)->key.name);
NSS_BYNAME(NSLCD_ACTION_ETHER_BYNAME,buffer,sizeof(buffer),
name,
read_etherent(fp,&result,buffer,sizeof(buffer),&errno));
if (retv==NSS_STATUS_SUCCESS)
{
if (NSS_ARGS(args)->buf.result==NULL)
{
strcpy(NSS_ARGS(args)->buf.buffer,ether_ntoa(&result.e_addr));
NSS_ARGS(args)->buf.buflen=strlen(NSS_ARGS(args)->buf.buffer);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->returnlen=strlen(NSS_ARGS(args)->buf.buffer);
return retv;
}
memcpy(NSS_ARGS(args)->buf.result,&result.e_addr,sizeof(result.e_addr));
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
}
return retv;
}
/* map an ethernet address to the corresponding hostname */
static nss_status_t _xnss_ldap_getntohost_r(nss_backend_t UNUSED(*be),void *args)
{
struct etherent result;
struct ether_addr *addr=(struct ether_addr *)(NSS_ARGS(args)->key.ether);
char buffer[NSS_BUFLEN_ETHERS];
NSS_BYTYPE(NSLCD_ACTION_ETHER_BYETHER,buffer,sizeof(buffer),
*addr,uint8_t[6],
read_etherent(fp,&result,buffer,sizeof(buffer),&errno));
if (retv==NSS_STATUS_SUCCESS)
{
if (NSS_ARGS(args)->buf.buffer!=NULL)
{
/* TODO: OpenSolaris expects "<macAddress> <host>" */
/* This output is handled correctly by NSCD,but not */
/* when NSCD is off. Not an issue with NSS_LDAP,but */
/* with the frontend. */
sprintf(NSS_ARGS(args)->buf.buffer,"%s %s",ether_ntoa(addr),result.e_name);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->returnlen=strlen(NSS_ARGS(args)->buf.buffer);
return retv;
}
memcpy(NSS_ARGS(args)->buf.buffer,result.e_name,strlen(result.e_name)+1);
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result=NSS_ARGS(args)->buf.buffer;
NSS_ARGS(args)->buf.buflen=strlen(result.e_name); /* ?? */
}
else
{
NSS_ARGS(args)->returnval=NULL;
}
return retv;
}
/* thread-local file pointer to an ongoing request */
static __thread TFILE *etherentfp;
static nss_status_t _xnss_ldap_setetherent(nss_backend_t UNUSED(*be),void UNUSED(*args))
{
NSS_SETENT(etherentfp);
}
static nss_status_t _xnss_ldap_getetherent_r(nss_backend_t UNUSED(*be),void *args)
{
/* TODO: padl uses struct ether,verify */
struct etherent result;
char *buffer=NSS_ARGS(args)->buf.buffer;
size_t buflen=NSS_ARGS(args)->buf.buflen;
NSS_GETENT(etherentfp,NSLCD_ACTION_ETHER_ALL,buffer,buflen,
read_etherent(etherentfp,&result,buffer,buflen,&errno));
if (retv==NSS_STATUS_SUCCESS)
{
memcpy(NSS_ARGS(args)->buf.result,&result.e_addr,sizeof(result.e_addr));
NSS_ARGS(args)->returnval=NSS_ARGS(args)->buf.result;
}
else
NSS_ARGS(args)->returnval=NULL;
return retv;
}
static nss_status_t _xnss_ldap_endetherent(nss_backend_t UNUSED(*be),void UNUSED(*args))
{
NSS_ENDENT(etherentfp);
}
static nss_status_t _xnss_ldap_ethers_destr(nss_backend_t *be,void UNUSED(*args))
{
free(be);
return NSS_STATUS_SUCCESS;
}
static nss_backend_op_t ethers_ops[]={
_xnss_ldap_ethers_destr,
_xnss_ldap_gethostton_r,
_xnss_ldap_getntohost_r
};
nss_backend_t *_nss_ldap_ethers_constr(const char UNUSED(*db_name),
const char UNUSED(*src_name),const char UNUSED(*cfg_args))
{
nss_backend_t *be;
if (!(be=(nss_backend_t *)malloc(sizeof(*be))))
return NULL;
be->ops=ethers_ops;
be->n_ops=sizeof(ethers_ops)/sizeof(nss_backend_op_t);
return be;
}
#endif /* NSS_FLAVOUR_SOLARIS */
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