Skip to content
Permalink
08c9a553c7
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
 
 
Cannot retrieve contributors at this time
292 lines (233 sloc) 6.35 KB
/* Copyright (C) 1996-2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
The GNU C 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.
The GNU C 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <nss.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <bits/libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include <netinet/ether.h>
#include <netinet/if_ether.h>
#include "nss-nis.h"
/* Protect global state against multiple changers */
__libc_lock_define_initialized (static, lock)
/* Get the declaration of the parser function. */
#define ENTNAME etherent
#define STRUCTURE etherent
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
struct response
{
struct response *next;
char val[0];
};
static struct response *start;
static struct response *next;
static int
saveit (int instatus, char *inkey, int inkeylen, char *inval,
int invallen, char *indata)
{
if (instatus != YP_TRUE)
return 1;
if (inkey && inkeylen > 0 && inval && invallen > 0)
{
struct response *newp = malloc (sizeof (struct response) + invallen + 1);
if (newp == NULL)
return 1; /* We have no error code for out of memory */
if (start == NULL)
start = newp;
else
next->next = newp;
next = newp;
newp->next = NULL;
*((char *) mempcpy (newp->val, inval, invallen)) = '\0';
}
return 0;
}
static void
internal_nis_endetherent (void)
{
while (start != NULL)
{
next = start;
start = start->next;
free (next);
}
}
enum nss_status
_nss_nis_endetherent (void)
{
__libc_lock_lock (lock);
internal_nis_endetherent ();
next = NULL;
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
static enum nss_status
internal_nis_setetherent (void)
{
char *domainname;
struct ypall_callback ypcb;
enum nss_status status;
yp_get_default_domain (&domainname);
internal_nis_endetherent ();
ypcb.foreach = saveit;
ypcb.data = NULL;
status = yperr2nss (yp_all (domainname, "ethers.byname", &ypcb));
next = start;
return status;
}
enum nss_status
_nss_nis_setetherent (int stayopen)
{
enum nss_status result;
__libc_lock_lock (lock);
result = internal_nis_setetherent ();
__libc_lock_unlock (lock);
return result;
}
static enum nss_status
internal_nis_getetherent_r (struct etherent *eth, char *buffer, size_t buflen,
int *errnop)
{
struct parser_data *data = (void *) buffer;
int parse_res;
if (start == NULL)
internal_nis_setetherent ();
/* Get the next entry until we found a correct one. */
do
{
char *p;
if (next == NULL)
return NSS_STATUS_NOTFOUND;
p = strncpy (buffer, next->val, buflen);
while (isspace (*p))
++p;
parse_res = _nss_files_parse_etherent (p, eth, data, buflen, errnop);
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
next = next->next;
}
while (!parse_res);
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_getetherent_r (struct etherent *result, char *buffer, size_t buflen,
int *errnop)
{
int status;
__libc_lock_lock (lock);
status = internal_nis_getetherent_r (result, buffer, buflen, errnop);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nis_gethostton_r (const char *name, struct etherent *eth,
char *buffer, size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
enum nss_status retval;
char *domain, *result, *p;
int len, parse_res;
if (name == NULL)
{
*errnop = EINVAL;
return NSS_STATUS_UNAVAIL;
}
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
retval = yperr2nss (yp_match (domain, "ethers.byname", name,
strlen (name), &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_TRYAGAIN)
*errnop = errno;
return retval;
}
if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = _nss_files_parse_etherent (p, eth, data, buflen, errnop);
if (parse_res < 1)
{
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_getntohost_r (const struct ether_addr *addr, struct etherent *eth,
char *buffer, size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
enum nss_status retval;
char *domain, *result, *p;
int len, nlen, parse_res;
char buf[33];
if (addr == NULL)
{
*errnop = EINVAL;
return NSS_STATUS_UNAVAIL;
}
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
nlen = sprintf (buf, "%x:%x:%x:%x:%x:%x",
(int) addr->ether_addr_octet[0],
(int) addr->ether_addr_octet[1],
(int) addr->ether_addr_octet[2],
(int) addr->ether_addr_octet[3],
(int) addr->ether_addr_octet[4],
(int) addr->ether_addr_octet[5]);
retval = yperr2nss (yp_match (domain, "ethers.byaddr", buf,
nlen, &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_TRYAGAIN)
*errnop = errno;
return retval;
}
if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = _nss_files_parse_etherent (p, eth, data, buflen, errnop);
if (parse_res < 1)
{
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
return NSS_STATUS_SUCCESS;
}