[glibc.git] / nis / nss_nis / nis-ethers.c

/* Copyright (C) 1996 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.

   The GNU C 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 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C 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.  */

#include <nss.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include <netinet/if_ether.h>

#include "nss-nis.h"

/* Protect global state against multiple changers */
__libc_lock_define_initialized (static, lock)

struct ether
{
  const char *e_name;
  struct ether_addr e_addr;
};

/* Get the declaration of the parser function.  */
#define ENTNAME etherent
#define STRUCTURE ether
#define EXTERN_PARSER
#include "../nss/nss_files/files-parse.c"

static bool_t new_start = 1;
static char *oldkey = NULL;
static int oldkeylen = 0;

enum nss_status
_nss_nis_setetherent (void)
{
  __libc_lock_lock (lock);

  new_start = 1;
  if (oldkey != NULL)
    {
      free (oldkey);
      oldkey = NULL;
      oldkeylen = 0;
    }

  __libc_lock_unlock (lock);

  return NSS_STATUS_SUCCESS;
}

enum nss_status
_nss_nis_endetherent (void)
{
  __libc_lock_lock (lock);

  new_start = 1;
  if (oldkey != NULL)
    {
      free (oldkey);
      oldkey = NULL;
      oldkeylen = 0;
    }

  __libc_lock_unlock (lock);

  return NSS_STATUS_SUCCESS;
}

static enum nss_status
internal_nis_getetherent_r (struct ether *eth, char *buffer, size_t buflen)
{
  struct parser_data *data = (void *) buffer;
  char *domain, *result, *outkey;
  int len, keylen, parse_res;

  if (yp_get_default_domain (&domain))
    return NSS_STATUS_UNAVAIL;

  /* Get the next entry until we found a correct one. */
  do
    {
      enum nss_status retval;
      char *p;

      if (new_start)
        retval = yperr2nss (yp_first (domain, "ethers.byaddr",
                                      &outkey, &keylen, &result, &len));
      else
        retval = yperr2nss ( yp_next (domain, "ethers.byaddr",
                                      oldkey, oldkeylen,
                                      &outkey, &keylen, &result, &len));

      if (retval != NSS_STATUS_SUCCESS)
        {
          if (retval == NSS_STATUS_TRYAGAIN)
            __set_errno (EAGAIN);
          return retval;
        }

      if ((size_t) (len + 1) > buflen)
        {
          free (result);
          __set_errno (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);
      if (!parse_res && errno == ERANGE)
        return NSS_STATUS_TRYAGAIN;

      free (oldkey);
      oldkey = outkey;
      oldkeylen = keylen;
      new_start = 0;
    }
  while (!parse_res);

  return NSS_STATUS_SUCCESS;
}

enum nss_status
_nss_nis_getetherent_r (struct ether *result, char *buffer, size_t buflen)
{
  int status;

  __libc_lock_lock (lock);

  status = internal_nis_getetherent_r (result, buffer, buflen);

  __libc_lock_unlock (lock);

  return status;
}

enum nss_status
_nss_nis_getethernam_r (const char *name, struct ether *eth,
			char *buffer, size_t buflen)
{
  struct parser_data *data = (void *) buffer;
  enum nss_status retval;
  char *domain, *result, *p;
  int len, parse_res;

  if (name == NULL)
    {
      __set_errno (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)
        __set_errno (EAGAIN);
      return retval;
    }

  if ((size_t) (len + 1) > buflen)
    {
      free (result);
      __set_errno (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);

  if (!parse_res)
    {
      if (errno == ERANGE)
        return NSS_STATUS_TRYAGAIN;
      else
        return NSS_STATUS_NOTFOUND;
    }
  else
    return NSS_STATUS_SUCCESS;
}

enum nss_status
_nss_nis_getetherbyaddr_r (struct ether_addr *addr, struct ether *eth,
			   char *buffer, size_t buflen)
{
  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)
    {
      __set_errno (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)
        __set_errno (EAGAIN);
      return retval;
    }

  if ((size_t) (len + 1) > buflen)
    {
      free (result);
      __set_errno (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);

  if (!parse_res)
    {
      if (errno == ERANGE)
        return NSS_STATUS_TRYAGAIN;
      else
        return NSS_STATUS_NOTFOUND;
    }
  else
    return NSS_STATUS_SUCCESS;
}
Commit	Line	Data
	1	/* Copyright (C) 1996 Free Software Foundation, Inc.
	2	This file is part of the GNU C Library.
	3	Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Library General Public License as
	7	published by the Free Software Foundation; either version 2 of the
	8	License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Library General Public License for more details.
	14
	15	You should have received a copy of the GNU Library General Public
	16	License along with the GNU C Library; see the file COPYING.LIB. If not,
	17	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	18	Boston, MA 02111-1307, USA. */
	19
	20	#include <nss.h>
	21	#include <ctype.h>
	22	#include <errno.h>
	23	#include <string.h>
	24	#include <libc-lock.h>
	25	#include <rpcsvc/yp.h>
	26	#include <rpcsvc/ypclnt.h>
	27	#include <netinet/if_ether.h>
	28
	29	#include "nss-nis.h"
	30
	31	/* Protect global state against multiple changers */
	32	__libc_lock_define_initialized (static, lock)
	33
	34	struct ether
	35	{
	36	const char *e_name;
	37	struct ether_addr e_addr;
	38	};
	39
	40	/* Get the declaration of the parser function. */
	41	#define ENTNAME etherent
	42	#define STRUCTURE ether
	43	#define EXTERN_PARSER
	44	#include "../nss/nss_files/files-parse.c"
	45
	46	static bool_t new_start = 1;
	47	static char *oldkey = NULL;
	48	static int oldkeylen = 0;
	49
	50	enum nss_status
	51	_nss_nis_setetherent (void)
	52	{
	53	__libc_lock_lock (lock);
	54
	55	new_start = 1;
	56	if (oldkey != NULL)
	57	{
	58	free (oldkey);
	59	oldkey = NULL;
	60	oldkeylen = 0;
	61	}
	62
	63	__libc_lock_unlock (lock);
	64
	65	return NSS_STATUS_SUCCESS;
	66	}
	67
	68	enum nss_status
	69	_nss_nis_endetherent (void)
	70	{
	71	__libc_lock_lock (lock);
	72
	73	new_start = 1;
	74	if (oldkey != NULL)
	75	{
	76	free (oldkey);
	77	oldkey = NULL;
	78	oldkeylen = 0;
	79	}
	80
	81	__libc_lock_unlock (lock);
	82
	83	return NSS_STATUS_SUCCESS;
	84	}
	85
	86	static enum nss_status
	87	internal_nis_getetherent_r (struct ether eth, char buffer, size_t buflen)
	88	{
	89	struct parser_data data = (void ) buffer;
	90	char domain, result, *outkey;
	91	int len, keylen, parse_res;
	92
	93	if (yp_get_default_domain (&domain))
	94	return NSS_STATUS_UNAVAIL;
	95
	96	/* Get the next entry until we found a correct one. */
	97	do
	98	{
	99	enum nss_status retval;
	100	char *p;
	101
	102	if (new_start)
	103	retval = yperr2nss (yp_first (domain, "ethers.byaddr",
	104	&outkey, &keylen, &result, &len));
	105	else
	106	retval = yperr2nss ( yp_next (domain, "ethers.byaddr",
	107	oldkey, oldkeylen,
	108	&outkey, &keylen, &result, &len));
	109
	110	if (retval != NSS_STATUS_SUCCESS)
	111	{
	112	if (retval == NSS_STATUS_TRYAGAIN)
	113	__set_errno (EAGAIN);
	114	return retval;
	115	}
	116
	117	if ((size_t) (len + 1) > buflen)
	118	{
	119	free (result);
	120	__set_errno (ERANGE);
	121	return NSS_STATUS_TRYAGAIN;
	122	}
	123
	124	p = strncpy (buffer, result, len);
	125	buffer[len] = '\0';
	126	while (isspace (*p))
	127	++p;
	128	free (result);
	129
	130	parse_res = _nss_files_parse_etherent (p, eth, data, buflen);
	131	if (!parse_res && errno == ERANGE)
	132	return NSS_STATUS_TRYAGAIN;
	133
	134	free (oldkey);
	135	oldkey = outkey;
	136	oldkeylen = keylen;
	137	new_start = 0;
	138	}
	139	while (!parse_res);
	140
	141	return NSS_STATUS_SUCCESS;
	142	}
	143
	144	enum nss_status
	145	_nss_nis_getetherent_r (struct ether result, char buffer, size_t buflen)
	146	{
	147	int status;
	148
	149	__libc_lock_lock (lock);
	150
	151	status = internal_nis_getetherent_r (result, buffer, buflen);
	152
	153	__libc_lock_unlock (lock);
	154
	155	return status;
	156	}
	157
	158	enum nss_status
	159	_nss_nis_getethernam_r (const char name, struct ether eth,
	160	char *buffer, size_t buflen)
	161	{
	162	struct parser_data data = (void ) buffer;
	163	enum nss_status retval;
	164	char domain, result, *p;
	165	int len, parse_res;
	166
	167	if (name == NULL)
	168	{
	169	__set_errno (EINVAL);
	170	return NSS_STATUS_UNAVAIL;
	171	}
	172
	173	if (yp_get_default_domain (&domain))
	174	return NSS_STATUS_UNAVAIL;
	175
	176	retval = yperr2nss (yp_match (domain, "ethers.byname", name,
	177	strlen (name), &result, &len));
	178
	179	if (retval != NSS_STATUS_SUCCESS)
	180	{
	181	if (retval == NSS_STATUS_TRYAGAIN)
	182	__set_errno (EAGAIN);
	183	return retval;
	184	}
	185
	186	if ((size_t) (len + 1) > buflen)
	187	{
	188	free (result);
	189	__set_errno (ERANGE);
	190	return NSS_STATUS_TRYAGAIN;
	191	}
	192
	193	p = strncpy (buffer, result, len);
	194	buffer[len] = '\0';
	195	while (isspace (*p))
	196	++p;
	197	free (result);
	198
	199	parse_res = _nss_files_parse_etherent (p, eth, data, buflen);
	200
	201	if (!parse_res)
	202	{
	203	if (errno == ERANGE)
	204	return NSS_STATUS_TRYAGAIN;
	205	else
	206	return NSS_STATUS_NOTFOUND;
	207	}
	208	else
	209	return NSS_STATUS_SUCCESS;
	210	}
	211
	212	enum nss_status
	213	_nss_nis_getetherbyaddr_r (struct ether_addr addr, struct ether eth,
	214	char *buffer, size_t buflen)
	215	{
	216	struct parser_data data = (void ) buffer;
	217	enum nss_status retval;
	218	char domain, result, *p;
	219	int len, nlen, parse_res;
	220	char buf[33];
	221
	222	if (addr == NULL)
	223	{
	224	__set_errno (EINVAL);
	225	return NSS_STATUS_UNAVAIL;
	226	}
	227
	228	if (yp_get_default_domain (&domain))
	229	return NSS_STATUS_UNAVAIL;
	230
	231	nlen = sprintf (buf, "%x:%x:%x:%x:%x:%x",
	232	(int) addr->ether_addr_octet[0],
	233	(int) addr->ether_addr_octet[1],
	234	(int) addr->ether_addr_octet[2],
	235	(int) addr->ether_addr_octet[3],
	236	(int) addr->ether_addr_octet[4],
	237	(int) addr->ether_addr_octet[5]);
	238
	239	retval = yperr2nss (yp_match (domain, "ethers.byaddr", buf,
	240	nlen, &result, &len));
	241
	242	if (retval != NSS_STATUS_SUCCESS)
	243	{
	244	if (retval == NSS_STATUS_TRYAGAIN)
	245	__set_errno (EAGAIN);
	246	return retval;
	247	}
	248
	249	if ((size_t) (len + 1) > buflen)
	250	{
	251	free (result);
	252	__set_errno (ERANGE);
	253	return NSS_STATUS_TRYAGAIN;
	254	}
	255
	256	p = strncpy (buffer, result, len);
	257	buffer[len] = '\0';
	258	while (isspace (*p))
	259	++p;
	260	free (result);
	261
	262	parse_res = _nss_files_parse_etherent (p, eth, data, buflen);
	263
	264	if (!parse_res)
	265	{
	266	if (errno == ERANGE)
	267	return NSS_STATUS_TRYAGAIN;
	268	else
	269	return NSS_STATUS_NOTFOUND;
	270	}
	271	else
	272	return NSS_STATUS_SUCCESS;
	273	}