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glibc  2.9
Defines | Functions | Variables
nis-ethers.c File Reference
#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"
#include <nss/nss_files/files-parse.c>

Go to the source code of this file.

Defines

#define ENTNAME   etherent
#define STRUCTURE   etherent
#define EXTERN_PARSER

Functions

 __libc_lock_define_initialized (static, lock)
static int saveit (int instatus, char *inkey, int inkeylen, char *inval, int invallen, char *indata)
static void internal_nis_endetherent (void)
enum nss_status _nss_nis_endetherent (void)
static enum nss_status internal_nis_setetherent (void)
enum nss_status _nss_nis_setetherent (int stayopen)
static enum nss_status internal_nis_getetherent_r (struct etherent *eth, char *buffer, size_t buflen, int *errnop)
enum nss_status _nss_nis_getetherent_r (struct etherent *result, char *buffer, size_t buflen, int *errnop)
enum nss_status _nss_nis_gethostton_r (const char *name, struct etherent *eth, char *buffer, size_t buflen, int *errnop)
enum nss_status _nss_nis_getntohost_r (const struct ether_addr *addr, struct etherent *eth, char *buffer, size_t buflen, int *errnop)

Variables

static struct response * start
static struct response * next

Define Documentation

#define ENTNAME   etherent
#define EXTERN_PARSER
#define STRUCTURE   etherent

Function Documentation

__libc_lock_define_initialized ( static  ,
lock   
)

Definition at line 33 of file nis-ethers.c.

{
  struct response *next;
  char val[0];
};

Definition at line 88 of file nis-ethers.c.

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enum nss_status _nss_nis_getetherent_r ( struct etherent *  result,
char *  buffer,
size_t  buflen,
int errnop 
)

Definition at line 167 of file nis-ethers.c.

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enum nss_status _nss_nis_gethostton_r ( const char *  name,
struct etherent *  eth,
char *  buffer,
size_t  buflen,
int errnop 
)

Definition at line 182 of file nis-ethers.c.

{
  if (name == NULL)
    {
      *errnop = EINVAL;
      return NSS_STATUS_UNAVAIL;
    }

  char *domain;
  if (__builtin_expect (yp_get_default_domain (&domain), 0))
    return NSS_STATUS_UNAVAIL;

  char *result;
  int len;
  int yperr = yp_match (domain, "ethers.byname", name, strlen (name), &result,
                     &len);

  if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
    {
      enum nss_status retval = yperr2nss (yperr);

      if (retval == NSS_STATUS_TRYAGAIN)
        *errnop = errno;
      return retval;
    }

  if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
    {
      free (result);
      *errnop = ERANGE;
      return NSS_STATUS_TRYAGAIN;
    }

  char *p = strncpy (buffer, result, len);
  buffer[len] = '\0';
  while (isspace (*p))
    ++p;
  free (result);

  int parse_res = _nss_files_parse_etherent (p, eth, (void *) buffer, buflen,
                                        errnop);
  if (__builtin_expect (parse_res < 1, 0))
    {
      if (parse_res == -1)
       return NSS_STATUS_TRYAGAIN;
      else
       return NSS_STATUS_NOTFOUND;
    }
  return NSS_STATUS_SUCCESS;
}

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enum nss_status _nss_nis_getntohost_r ( const struct ether_addr addr,
struct etherent *  eth,
char *  buffer,
size_t  buflen,
int errnop 
)

Definition at line 235 of file nis-ethers.c.

{
  if (addr == NULL)
    {
      *errnop = EINVAL;
      return NSS_STATUS_UNAVAIL;
    }

  char *domain;
  if (__builtin_expect (yp_get_default_domain (&domain), 0))
    return NSS_STATUS_UNAVAIL;

  char buf[33];
  int nlen = snprintf (buf, sizeof (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]);

  char *result;
  int len;
  int yperr = yp_match (domain, "ethers.byaddr", buf, nlen, &result, &len);

  if (__builtin_expect (yperr != YPERR_SUCCESS, 0))
    {
      enum nss_status retval = yperr2nss (yperr);

      if (retval == NSS_STATUS_TRYAGAIN)
        *errnop = errno;
      return retval;
    }

  if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
    {
      free (result);
      *errnop = ERANGE;
      return NSS_STATUS_TRYAGAIN;
    }

  char *p = strncpy (buffer, result, len);
  buffer[len] = '\0';
  while (isspace (*p))
    ++p;
  free (result);

  int parse_res = _nss_files_parse_etherent (p, eth, (void *) buffer, buflen,
                                        errnop);
  if (__builtin_expect (parse_res < 1, 0))
    {
      if (parse_res == -1)
       return NSS_STATUS_TRYAGAIN;
      else
       return NSS_STATUS_NOTFOUND;
    }
  return NSS_STATUS_SUCCESS;
}

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enum nss_status _nss_nis_setetherent ( int  stayopen)

Definition at line 120 of file nis-ethers.c.

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static void internal_nis_endetherent ( void  ) [static]

Definition at line 77 of file nis-ethers.c.

{
  while (start != NULL)
    {
      next = start;
      start = start->next;
      free (next);
    }
}

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static enum nss_status internal_nis_getetherent_r ( struct etherent *  eth,
char *  buffer,
size_t  buflen,
int errnop 
) [static]

Definition at line 134 of file nis-ethers.c.

{
  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;
}

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static enum nss_status internal_nis_setetherent ( void  ) [static]

Definition at line 101 of file nis-ethers.c.

{
  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;
}

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static int saveit ( int  instatus,
char *  inkey,
int  inkeylen,
char *  inval,
int  invallen,
char *  indata 
) [static]

Definition at line 51 of file nis-ethers.c.

{
  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;
}

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Variable Documentation

struct response* next [static]

Definition at line 48 of file nis-ethers.c.

struct response* start [static]

Definition at line 47 of file nis-ethers.c.