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glibc  2.9
Defines | Functions
nis-network.c File Reference
#include <nss.h>
#include <netdb.h>
#include <ctype.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <bits/libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
#include <nss/nss_files/files-parse.c>

Go to the source code of this file.

Defines

#define _nss_nis_endnetent   _nss_nis_endnetent_XXX
#define ENTNAME   netent
#define EXTERN_PARSER

Functions

 __libc_lock_define_initialized (static, lock)
 strong_alias (_nss_nis_setnetent, _nss_nis_endnetent)
enum nss_status _nss_nis_getnetent_r (struct netent *net, char *buffer, size_t buflen, int *errnop, int *herrnop)
enum nss_status _nss_nis_getnetbyname_r (const char *name, struct netent *net, char *buffer, size_t buflen, int *errnop, int *herrnop)
enum nss_status _nss_nis_getnetbyaddr_r (uint32_t addr, int type, struct netent *net, char *buffer, size_t buflen, int *errnop, int *herrnop)

Define Documentation

#define _nss_nis_endnetent   _nss_nis_endnetent_XXX

Definition at line 23 of file nis-network.c.

#define ENTNAME   netent

Definition at line 39 of file nis-network.c.

#define EXTERN_PARSER

Definition at line 40 of file nis-network.c.


Function Documentation

__libc_lock_define_initialized ( static  ,
lock   
)

Definition at line 43 of file nis-network.c.

{
  __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_getnetbyaddr_r ( uint32_t  addr,
int  type,
struct netent net,
char *  buffer,
size_t  buflen,
int errnop,
int herrnop 
)

Definition at line 236 of file nis-network.c.

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

  struct in_addr in = inet_makeaddr (addr, 0);
  char *buf = inet_ntoa (in);
  size_t blen = strlen (buf);

  while (1)
    {
      char *result;
      int len;

      int yperr = yp_match (domain, "networks.byaddr", buf, blen, &result,
                         &len);

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

           if (retval == NSS_STATUS_NOTFOUND)
             {
              if (buf[blen - 2] == '.' && buf[blen - 1] == '0')
                {
                  /* Try again, but with trailing dot(s)
                     removed (one by one) */
                  buf[blen - 2] = '\0';
                  blen -= 2;
                  continue;
                }
              else
                return NSS_STATUS_NOTFOUND;
             }
           else
             {
              if (retval == NSS_STATUS_TRYAGAIN)
                *errnop = errno;
              return retval;
             }
         }

      if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
       {
         free (result);
         *errnop = ERANGE;
         *herrnop = NETDB_INTERNAL;
         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_netent (p, net, (void *) buffer,
                                           buflen, errnop);

       if (__builtin_expect (parse_res < 1, 0))
         {
           *herrnop = NETDB_INTERNAL;
           if (parse_res == -1)
             return NSS_STATUS_TRYAGAIN;
           else
             return NSS_STATUS_NOTFOUND;
         }
       else
         return NSS_STATUS_SUCCESS;
    }
}

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enum nss_status _nss_nis_getnetbyname_r ( const char *  name,
struct netent net,
char *  buffer,
size_t  buflen,
int errnop,
int herrnop 
)

Definition at line 159 of file nis-network.c.

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

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

  struct parser_data *data = (void *) buffer;
  if (buflen < sizeof *data + 1)
    {
      *herrnop = NETDB_INTERNAL;
      *errnop = ERANGE;
      return NSS_STATUS_TRYAGAIN;
    }

  /* Convert name to lowercase.  */
  size_t namlen = strlen (name);
  char name2[namlen + 1];
  size_t i;

  for (i = 0; i < namlen; ++i)
    name2[i] = _tolower (name[i]);
  name2[i] = '\0';

  char *result;
  int len;
  int yperr = yp_match (domain, "networks.byname", name2, namlen, &result,
                     &len);

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

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

  if (__builtin_expect ((size_t) (len + 1) > buflen, 0))
    {
      free (result);
      *errnop = ERANGE;
      *herrnop = NETDB_INTERNAL;
      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_netent (p, net, data, buflen, errnop);

  if (__builtin_expect (parse_res < 1, 0))
    {
      *herrnop = NETDB_INTERNAL;
      if (parse_res == -1)
       return NSS_STATUS_TRYAGAIN;
      else
       return NSS_STATUS_NOTFOUND;
    }
  else
    return NSS_STATUS_SUCCESS;
}

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enum nss_status _nss_nis_getnetent_r ( struct netent net,
char *  buffer,
size_t  buflen,
int errnop,
int herrnop 
)

Definition at line 144 of file nis-network.c.

{
  enum nss_status status;

  __libc_lock_lock (lock);

  status = internal_nis_getnetent_r (net, buffer, buflen, errnop, herrnop);

  __libc_lock_unlock (lock);

  return status;
}
strong_alias ( _nss_nis_setnetent  ,
_nss_nis_endnetent   
)

Definition at line 69 of file nis-network.c.

{
  struct parser_data *data = (void *) buffer;

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

  /* Get the next entry until we found a correct one. */
  int parse_res;
  do
    {
      char *result;
      char *outkey;
      int len;
      int keylen;
      int yperr;

      if (new_start)
        yperr = yp_first (domain, "networks.byname", &outkey, &keylen, &result,
                       &len);
      else
        yperr = yp_next (domain, "networks.byname", oldkey, oldkeylen, &outkey,
                      &keylen, &result, &len);

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

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

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

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

      parse_res = _nss_files_parse_netent (p, net, data, buflen, errnop);
      if (__builtin_expect (parse_res == -1, 0))
       {
         free (outkey);
         *herrnop = NETDB_INTERNAL;
         *errnop = ERANGE;
         return NSS_STATUS_TRYAGAIN;
       }

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

  return NSS_STATUS_SUCCESS;
}

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