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glibc  2.9
Classes | Functions | Variables
nis_call.c File Reference
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <libintl.h>
#include <rpc/rpc.h>
#include <rpc/auth.h>
#include <rpcsvc/nis.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <bits/libc-lock.h>
#include "nis_xdr.h"
#include "nis_intern.h"
#include <libnsl.h>

Go to the source code of this file.

Classes

struct  nis_server_cache

Functions

u_short __pmap_getnisport (struct sockaddr_in *address, u_long program, u_long version, u_int protocol)
unsigned long int inetstr2int (const char *str)
void __nisbind_destroy (dir_binding *bind)
 libnsl_hidden_def (__nisbind_destroy)
 libnsl_hidden_def (__nisbind_next)
 __libc_lock_define_initialized (static, ckey_cache_lock)
nis_error __nisbind_connect (dir_binding *dbp)
 libnsl_hidden_def (__nisbind_connect)
 libnsl_hidden_def (__nisbind_create)
 libnsl_hidden_def (__do_niscall3)
static directory_obj * rec_dirsearch (const_nis_name name, directory_obj *dir, nis_error *status)
static directory_obj * first_shoot (const_nis_name name, directory_obj *dir)
 __libc_lock_define_initialized (static, nis_server_cache_lock)
static void nis_server_cache_add (const_nis_name name, int search_parent, directory_obj *dir, unsigned int server_used, unsigned int current_ep, struct timeval *now)
nis_error __nisfind_server (const_nis_name name, int search_parent, directory_obj **dir, dir_binding *dbp, unsigned int flags)
nis_error __prepare_niscall (const_nis_name name, directory_obj **dirp, dir_binding *bptrp, unsigned int flags)
 libnsl_hidden_def (__prepare_niscall)

Variables

static struct timeval = {10, 0}
ckey_cache
static size_t ckey_cache_size
static size_t ckey_cache_allocated
static pid_t ckey_cache_pid
static uid_t ckey_cache_euid
static struct nis_server_cachenis_server_cache [16]
static time_t nis_cold_start_mtime

Class Documentation

struct nis_server_cache

Definition at line 571 of file nis_call.c.

Class Members
unsigned int current_ep
time_t expires
char name
int search_parent
unsigned int server_used
unsigned int size
int uses

Function Documentation

__libc_lock_define_initialized ( static  ,
ckey_cache_lock   
)

Definition at line 125 of file nis_call.c.

{
  size_t i;
  pid_t pid = getpid ();
  uid_t euid = geteuid ();
  bool_t ret = FALSE;

  __libc_lock_lock (ckey_cache_lock);

  if (ckey_cache_pid != pid || ckey_cache_euid != euid)
    {
      ckey_cache_size = 0;
      ckey_cache_pid = pid;
      ckey_cache_euid = euid;
    }

  for (i = 0; i < ckey_cache_size; ++i)
    if (ckey_cache[i].port == addr->sin_port
       && ckey_cache[i].protocol == protocol
       && memcmp (&ckey_cache[i].inaddr, &addr->sin_addr,
                 sizeof (addr->sin_addr)) == 0)
      {
       *ckey = ckey_cache[i].ckey;
       ret = TRUE;
       break;
      }

  if (!ret && key_gendes (ckey) >= 0)
    {
      ret = TRUE;
      /* Don't grow the cache indefinitely.  */
      if (ckey_cache_size == 256)
       ckey_cache_size = 0;
      if (ckey_cache_size == ckey_cache_allocated)
       {
         size_t size = ckey_cache_allocated ? ckey_cache_allocated * 2 : 16;
         struct ckey_cache_entry *new_cache
           = realloc (ckey_cache, size * sizeof (*ckey_cache));
         if (new_cache != NULL)
           {
             ckey_cache = new_cache;
             ckey_cache_allocated = size;
           }
       }
      ckey_cache[ckey_cache_size].inaddr = addr->sin_addr;
      ckey_cache[ckey_cache_size].port = addr->sin_port;
      ckey_cache[ckey_cache_size].protocol = protocol;
      ckey_cache[ckey_cache_size++].ckey = *ckey;
    }

  __libc_lock_unlock (ckey_cache_lock);
  return ret;
}

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__libc_lock_define_initialized ( static  ,
nis_server_cache_lock   
)

Definition at line 582 of file nis_call.c.

{
  directory_obj *ret = NULL;
  int i;
  char *addr;
  XDR xdrs;
  struct stat64 st;

  int saved_errno = errno;
  if (stat64 ("/var/nis/NIS_COLD_START", &st) < 0)
    st.st_mtime = nis_cold_start_mtime + 1;
  __set_errno (saved_errno);

  __libc_lock_lock (nis_server_cache_lock);

  for (i = 0; i < 16; ++i)
    if (nis_server_cache[i] == NULL)
      continue;
    else if (st.st_mtime != nis_cold_start_mtime
            || now->tv_sec > nis_server_cache[i]->expires)
      {
       free (nis_server_cache[i]);
       nis_server_cache[i] = NULL;
      }
    else if (nis_server_cache[i]->search_parent == search_parent
            && strcmp (nis_server_cache[i]->name, name) == 0)
      {
       ret = calloc (1, sizeof (directory_obj));
       if (ret == NULL)
         break;

       addr = rawmemchr (nis_server_cache[i]->name, '\0') + 8;
       addr = (char *) ((uintptr_t) addr & ~(uintptr_t) 7);
       xdrmem_create (&xdrs, addr, nis_server_cache[i]->size, XDR_DECODE);
       if (!_xdr_directory_obj (&xdrs, ret))
         {
           xdr_destroy (&xdrs);
           free (ret);
           ret = NULL;
           free (nis_server_cache[i]);
           nis_server_cache[i] = NULL;
           break;
         }
       xdr_destroy (&xdrs);
       *server_used = nis_server_cache[i]->server_used;
       *current_ep = nis_server_cache[i]->current_ep;
       break;
      }

  nis_cold_start_mtime = st.st_mtime;

  __libc_lock_unlock (nis_server_cache_lock);
  return ret;
}

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nis_error __nisbind_connect ( dir_binding *  dbp)

Definition at line 183 of file nis_call.c.

{
  nis_server *serv;
  u_short port;

  if (dbp == NULL)
    return NIS_FAIL;

  serv = &dbp->server_val[dbp->server_used];

  memset (&dbp->addr, '\0', sizeof (dbp->addr));
  dbp->addr.sin_family = AF_INET;

  dbp->addr.sin_addr.s_addr =
    inetstr2int (serv->ep.ep_val[dbp->current_ep].uaddr);

  if (dbp->addr.sin_addr.s_addr == INADDR_NONE)
    return NIS_FAIL;

  /* Check, if the host is online and rpc.nisd is running. Much faster
     then the clnt*_create functions: */
  port = __pmap_getnisport (&dbp->addr, NIS_PROG, NIS_VERSION,
                         dbp->use_udp ? IPPROTO_UDP : IPPROTO_TCP);
  if (port == 0)
    return NIS_RPCERROR;

  dbp->addr.sin_port = htons (port);
  dbp->socket = RPC_ANYSOCK;
  if (dbp->use_udp)
    dbp->clnt = clntudp_create (&dbp->addr, NIS_PROG, NIS_VERSION,
                             UDPTIMEOUT, &dbp->socket);
  else
    dbp->clnt = clnttcp_create (&dbp->addr, NIS_PROG, NIS_VERSION,
                             &dbp->socket, 0, 0);

  if (dbp->clnt == NULL)
    return NIS_RPCERROR;

  clnt_control (dbp->clnt, CLSET_TIMEOUT, (caddr_t) &RPCTIMEOUT);
  /* If the program exists, close the socket */
  if (fcntl (dbp->socket, F_SETFD, 1) == -1)
    perror ("fcntl: F_SETFD");

  if (dbp->use_auth)
    {
      if (serv->key_type == NIS_PK_DH)
       {
         char netname[MAXNETNAMELEN + 1];
         char *p;
         des_block ckey;

         p = stpcpy (netname, "unix@");
         strncpy (p, serv->name, MAXNETNAMELEN - 5);
         netname[MAXNETNAMELEN] = '\0';
         dbp->clnt->cl_auth = NULL;
         if (get_ckey (&ckey, &dbp->addr,
                     dbp->use_udp ? IPPROTO_UDP : IPPROTO_TCP))
           dbp->clnt->cl_auth =
             authdes_pk_create (netname, &serv->pkey, 300, NULL, &ckey);
         if (!dbp->clnt->cl_auth)
           dbp->clnt->cl_auth = authunix_create_default ();
       }
      else
       dbp->clnt->cl_auth = authunix_create_default ();
    }

  return NIS_SUCCESS;
}

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void __nisbind_destroy ( dir_binding *  bind)

Definition at line 61 of file nis_call.c.

{
  if (bind->clnt != NULL)
    {
      if (bind->use_auth)
       auth_destroy (bind->clnt->cl_auth);
      clnt_destroy (bind->clnt);
    }
}

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nis_error __nisfind_server ( const_nis_name  name,
int  search_parent,
directory_obj **  dir,
dir_binding *  dbp,
unsigned int  flags 
)

Definition at line 703 of file nis_call.c.

{
  nis_error result = NIS_SUCCESS;
  nis_error status;
  directory_obj *obj;
  struct timeval now;
  unsigned int server_used = ~0;
  unsigned int current_ep = ~0;

  if (name == NULL)
    return NIS_BADNAME;

  if (*dir != NULL)
    return NIS_SUCCESS;

  (void) gettimeofday (&now, NULL);

  if ((flags & NO_CACHE) == 0)
    *dir = nis_server_cache_search (name, search_parent, &server_used,
                                &current_ep, &now);
  if (*dir != NULL)
    {
      unsigned int server_len = (*dir)->do_servers.do_servers_len;
      if (flags & MASTER_ONLY)
       {
         server_len = 1;
         if (server_used != 0)
           {
             server_used = ~0;
             current_ep = ~0;
           }
       }
      result = __nisbind_create (dbp, (*dir)->do_servers.do_servers_val,
                             server_len, server_used, current_ep, flags);
      if (result != NIS_SUCCESS)
       {
         nis_free_directory (*dir);
         *dir = NULL;
       }
      return result;
    }

  int saved_errno = errno;
  *dir = readColdStartFile ();
  __set_errno (saved_errno);
  if (*dir == NULL)
    /* No /var/nis/NIS_COLD_START->no NIS+ installed.  */
    return NIS_UNAVAIL;

  /* Try at first, if servers in "dir" know our object */
  const char *search_name = name;
  if (search_parent)
    search_name = __nis_domain_of (name);
  obj = first_shoot (search_name, *dir);
  if (obj == NULL)
    {
      obj = rec_dirsearch (search_name, *dir, &status);
      if (obj == NULL)
       result = status;
    }

  if (result == NIS_SUCCESS)
    {
      unsigned int server_len = obj->do_servers.do_servers_len;
      if (flags & MASTER_ONLY)
       server_len = 1;
      result = __nisbind_create (dbp, obj->do_servers.do_servers_val,
                             server_len, ~0, ~0, flags);
      if (result == NIS_SUCCESS)
       {
         if ((flags & MASTER_ONLY) == 0
             || obj->do_servers.do_servers_len == 1)
           {
             server_used = dbp->server_used;
             current_ep = dbp->current_ep;
           }
         if ((flags & NO_CACHE) == 0)
           nis_server_cache_add (name, search_parent, obj,
                              server_used, current_ep, &now);
       }
      else
       {
         nis_free_directory (obj);
         obj = NULL;
       }
    }

  *dir = obj;

  return result;
}

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u_short __pmap_getnisport ( struct sockaddr_in address,
u_long  program,
u_long  version,
u_int  protocol 
)

Definition at line 65 of file nis_findserv.c.

{
  const struct timeval timeout = {1, 0};
  const struct timeval tottimeout = {1, 0};
  u_short port = 0;
  int socket = -1;
  CLIENT *client;
  struct pmap parms;

  address->sin_port = htons (PMAPPORT);
  client = clntudp_bufcreate (address, PMAPPROG, PMAPVERS, timeout, &socket,
                           RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
  if (client != (CLIENT *) NULL)
    {
      parms.pm_prog = program;
      parms.pm_vers = version;
      parms.pm_prot = protocol;
      parms.pm_port = 0;    /* not needed or used */
      if (CLNT_CALL (client, PMAPPROC_GETPORT, (xdrproc_t) xdr_pmap,
                   (caddr_t) & parms, (xdrproc_t) xdr_u_short,
                   (caddr_t) & port, tottimeout) != RPC_SUCCESS)
       {
         rpc_createerr.cf_stat = RPC_PMAPFAILURE;
         clnt_geterr (client, &rpc_createerr.cf_error);
       }
      else
       {
         if (port == 0)
           rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
       }
      CLNT_DESTROY (client);
    }
  /* (void)close(socket); CLNT_DESTROY already closed it */
  address->sin_port = 0;
  return port;
}

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nis_error __prepare_niscall ( const_nis_name  name,
directory_obj **  dirp,
dir_binding *  bptrp,
unsigned int  flags 
)

Definition at line 798 of file nis_call.c.

{
  nis_error retcode = __nisfind_server (name, 1, dirp, bptrp, flags);
  if (__builtin_expect (retcode != NIS_SUCCESS, 0))
    return retcode;

  do
    if (__nisbind_connect (bptrp) == NIS_SUCCESS)
      return NIS_SUCCESS;
  while (__nisbind_next (bptrp) == NIS_SUCCESS);

  __nisbind_destroy (bptrp);
  memset (bptrp, '\0', sizeof (*bptrp));

  retcode = NIS_NAMEUNREACHABLE;
  nis_free_directory (*dirp);
  *dirp = NULL;

  return retcode;
}

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static directory_obj* first_shoot ( const_nis_name  name,
directory_obj *  dir 
) [static]

Definition at line 536 of file nis_call.c.

{
  directory_obj *obj = NULL;
  fd_result *fd_res;
  XDR xdrs;

  if (nis_dir_cmp (name, dir->do_name) == SAME_NAME)
    return dir;

  fd_res = __nis_finddirectory (dir, name);
  if (fd_res == NULL)
    return NULL;
  if (fd_res->status == NIS_SUCCESS
      && (obj = calloc (1, sizeof (directory_obj))) != NULL)
    {
      xdrmem_create (&xdrs, fd_res->dir_data.dir_data_val,
                   fd_res->dir_data.dir_data_len, XDR_DECODE);
      _xdr_directory_obj (&xdrs, obj);
      xdr_destroy (&xdrs);

      if (strcmp (dir->do_name, obj->do_name) != 0)
       {
         nis_free_directory (obj);
         obj = NULL;
       }
    }

  __free_fdresult (fd_res);

  if (obj != NULL)
    nis_free_directory (dir);

  return obj;
}

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unsigned long int inetstr2int ( const char *  str)

Definition at line 46 of file nis_call.c.

{
  size_t j = 0;
  for (size_t i = 0; str[i] != '\0'; ++i)
    if (str[i] == '.' && __builtin_expect (++j == 4, 0))
      {
       char buffer[i + 1];
       buffer[i] = '\0';
       return inet_addr (memcpy (buffer, str, i));
      }

  return inet_addr (str);
}

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Definition at line 70 of file nis_call.c.

{
  if (bind->clnt != NULL)
    {
      if (bind->use_auth)
       auth_destroy (bind->clnt->cl_auth);
      clnt_destroy (bind->clnt);
      bind->clnt = NULL;
    }

  if (bind->trys >= bind->server_len)
    return NIS_FAIL;

  for (u_int j = bind->current_ep + 1;
       j < bind->server_val[bind->server_used].ep.ep_len; ++j)
    if (strcmp (bind->server_val[bind->server_used].ep.ep_val[j].family,
              "inet") == 0)
      if (bind->server_val[bind->server_used].ep.ep_val[j].proto[0] == '-')
       {
         bind->current_ep = j;
         return NIS_SUCCESS;
       }

  ++bind->trys;
  ++bind->server_used;
  if (bind->server_used >= bind->server_len)
    bind->server_used = 0;

  for (u_int j = 0; j < bind->server_val[bind->server_used].ep.ep_len; ++j)
    if (strcmp (bind->server_val[bind->server_used].ep.ep_val[j].family,
              "inet") == 0)
      if (bind->server_val[bind->server_used].ep.ep_val[j].proto[0] == '-')
       {
         bind->current_ep = j;
         return NIS_SUCCESS;
       }

  return NIS_FAIL;
}
libnsl_hidden_def ( __nisbind_next  )

Definition at line 112 of file nis_call.c.

{
  struct in_addr inaddr;
  in_port_t port;
  unsigned int protocol;
  des_block ckey;
} *ckey_cache;

Definition at line 251 of file nis_call.c.

{
  dbp->clnt = NULL;

  dbp->server_len = serv_len;
  dbp->server_val = (nis_server *)serv_val;

  if (flags & USE_DGRAM)
    dbp->use_udp = TRUE;
  else
    dbp->use_udp = FALSE;

  if (flags & NO_AUTHINFO)
    dbp->use_auth = FALSE;
  else
    dbp->use_auth = TRUE;

  if (flags & MASTER_ONLY)
    dbp->master_only = TRUE;
  else
    dbp->master_only = FALSE;

  /* We try the first server */
  dbp->trys = 1;

  dbp->class = -1;
  if (server_used == ~0)
    {
      if (__nis_findfastest (dbp) < 1)
       return NIS_NAMEUNREACHABLE;
    }
  else
    {
      dbp->server_used = server_used;
      dbp->current_ep = current_ep;
    }

  return NIS_SUCCESS;
}

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libnsl_hidden_def ( __nisbind_create  )

Definition at line 295 of file nis_call.c.

{
  enum clnt_stat result;
  nis_error retcode;

  if (dbp == NULL)
    return NIS_NAMEUNREACHABLE;

  do
    {
    again:
      result = clnt_call (dbp->clnt, prog, xargs, req, xres, resp, RPCTIMEOUT);

      if (result != RPC_SUCCESS)
       retcode = NIS_RPCERROR;
      else
       {
         switch (prog)
           {
           case NIS_IBLIST:
             if ((((nis_result *)resp)->status == NIS_CBRESULTS) &&
                (cb != NULL))
              {
                __nis_do_callback (dbp, &((nis_result *) resp)->cookie, cb);
                break;
              }
             /* Yes, the missing break is correct. If we doesn't have to
               start a callback, look if we have to search another server */
           case NIS_LOOKUP:
           case NIS_ADD:
           case NIS_MODIFY:
           case NIS_REMOVE:
           case NIS_IBADD:
           case NIS_IBMODIFY:
           case NIS_IBREMOVE:
           case NIS_IBFIRST:
           case NIS_IBNEXT:
             if (((nis_result *)resp)->status == NIS_SYSTEMERROR
                || ((nis_result *)resp)->status == NIS_NOSUCHNAME
                || ((nis_result *)resp)->status == NIS_NOT_ME)
              {
              next_server:
                if (__nisbind_next (dbp) == NIS_SUCCESS)
                  {
                    while (__nisbind_connect (dbp) != NIS_SUCCESS)
                     {
                       if (__nisbind_next (dbp) != NIS_SUCCESS)
                           return NIS_SUCCESS;
                     }
                  }
                else
                  break; /* No more servers to search in */
                goto again;
              }
             break;
           case NIS_FINDDIRECTORY:
             if (((fd_result *)resp)->status == NIS_SYSTEMERROR
                || ((fd_result *)resp)->status == NIS_NOSUCHNAME
                || ((fd_result *)resp)->status == NIS_NOT_ME)
              goto next_server;
             break;
           case NIS_DUMPLOG: /* log_result */
           case NIS_DUMP:
             if (((log_result *)resp)->lr_status == NIS_SYSTEMERROR
                || ((log_result *)resp)->lr_status == NIS_NOSUCHNAME
                || ((log_result *)resp)->lr_status == NIS_NOT_ME)
              goto next_server;
             break;
           default:
             break;
           }
         retcode = NIS_SUCCESS;
       }
    }
  while ((flags & HARD_LOOKUP) && retcode == NIS_RPCERROR);

  return retcode;
}

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Definition at line 379 of file nis_call.c.

{
  dir_binding dbp;
  nis_error status;

  if (flags & MASTER_ONLY)
    server_len = 1;

  status = __nisbind_create (&dbp, server, server_len, ~0, ~0, flags);
  if (status != NIS_SUCCESS)
    return status;

  while (__nisbind_connect (&dbp) != NIS_SUCCESS)
    if (__nisbind_next (&dbp) != NIS_SUCCESS)
      return NIS_NAMEUNREACHABLE;

  status = __do_niscall3 (&dbp, prog, xargs, req, xres, resp, flags, cb);

  __nisbind_destroy (&dbp);

  return status;

}

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Definition at line 819 of file nis_call.c.

{
  dir_binding bptr;
  directory_obj *dir = NULL;
  int saved_errno = errno;

  nis_error retcode = __prepare_niscall (name, &dir, &bptr, flags);
  if (retcode == NIS_SUCCESS)
    {
      retcode = __do_niscall3 (&bptr, prog, xargs, req, xres, resp, flags, cb);

      __nisbind_destroy (&bptr);

      nis_free_directory (dir);
    }

  __set_errno (saved_errno);

  return retcode;
}

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static void nis_server_cache_add ( const_nis_name  name,
int  search_parent,
directory_obj *  dir,
unsigned int  server_used,
unsigned int  current_ep,
struct timeval now 
) [static]

Definition at line 643 of file nis_call.c.

{
  struct nis_server_cache **loc;
  struct nis_server_cache *new;
  struct nis_server_cache *old;
  int i;
  char *addr;
  unsigned int size;
  XDR xdrs;

  if (dir == NULL)
    return;

  size = xdr_sizeof ((xdrproc_t) _xdr_directory_obj, (char *) dir);
  new = calloc (1, sizeof (*new) + strlen (name) + 8 + size);
  if (new == NULL)
    return;
  new->search_parent = search_parent;
  new->uses = 1;
  new->expires = now->tv_sec + dir->do_ttl;
  new->size = size;
  new->server_used = server_used;
  new->current_ep = current_ep;
  addr = stpcpy (new->name, name) + 8;
  addr = (char *) ((uintptr_t) addr & ~(uintptr_t) 7);

  xdrmem_create(&xdrs, addr, size, XDR_ENCODE);
  if (!_xdr_directory_obj (&xdrs, dir))
    {
      xdr_destroy (&xdrs);
      free (new);
      return;
    }
  xdr_destroy (&xdrs);

  __libc_lock_lock (nis_server_cache_lock);

  /* Choose which entry should be evicted from the cache.  */
  loc = &nis_server_cache[0];
  if (*loc != NULL)
    for (i = 1; i < 16; ++i)
      if (nis_server_cache[i] == NULL)
       {
         loc = &nis_server_cache[i];
         break;
       }
      else if ((*loc)->uses > nis_server_cache[i]->uses
              || ((*loc)->uses == nis_server_cache[i]->uses
                 && (*loc)->expires > nis_server_cache[i]->expires))
       loc = &nis_server_cache[i];
  old = *loc;
  *loc = new;

  __libc_lock_unlock (nis_server_cache_lock);
  free (old);
}

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static directory_obj* rec_dirsearch ( const_nis_name  name,
directory_obj *  dir,
nis_error *  status 
) [static]

Definition at line 410 of file nis_call.c.

{
  fd_result *fd_res;
  XDR xdrs;

  switch (nis_dir_cmp (name, dir->do_name))
    {
    case SAME_NAME:
      *status = NIS_SUCCESS;
      return dir;
    case NOT_SEQUENTIAL:
      /* NOT_SEQUENTIAL means, go one up and try it there ! */
    case HIGHER_NAME:
      { /* We need data from a parent domain */
       directory_obj *obj;
       const char *ndomain = __nis_domain_of (dir->do_name);

       /* The root server of our domain is a replica of the parent
          domain ! (Now I understand why a root server must be a
          replica of the parent domain) */
       fd_res = __nis_finddirectory (dir, ndomain);
       if (fd_res == NULL)
         {
           nis_free_directory (dir);
           *status = NIS_NOMEMORY;
           return NULL;
         }
       *status = fd_res->status;
       if (fd_res->status != NIS_SUCCESS)
         {
           /* Try the current directory obj, maybe it works */
           __free_fdresult (fd_res);
           return dir;
         }
       nis_free_directory (dir);
       obj = calloc (1, sizeof (directory_obj));
       if (obj == NULL)
         {
           __free_fdresult (fd_res);
           *status = NIS_NOMEMORY;
           return NULL;
         }
       xdrmem_create (&xdrs, fd_res->dir_data.dir_data_val,
                     fd_res->dir_data.dir_data_len, XDR_DECODE);
       _xdr_directory_obj (&xdrs, obj);
       xdr_destroy (&xdrs);
       __free_fdresult (fd_res);

       /* We have found a NIS+ server serving ndomain, now
          let us search for "name" */
       return rec_dirsearch (name, obj, status);
      }
      break;
    case LOWER_NAME:
      {
       directory_obj *obj;
       size_t namelen = strlen (name);
       char leaf[namelen + 3];
       char domain[namelen + 3];
       const char *ndomain;
       char *cp;

       strcpy (domain, name);

       do
         {
           if (domain[0] == '\0')
             {
              nis_free_directory (dir);
              return NULL;
             }
           nis_leaf_of_r (domain, leaf, sizeof (leaf));
           ndomain = __nis_domain_of (domain);
           memmove (domain, ndomain, strlen (ndomain) + 1);
         }
       while (nis_dir_cmp (domain, dir->do_name) != SAME_NAME);

       cp = rawmemchr (leaf, '\0');
       *cp++ = '.';
       strcpy (cp, domain);

       fd_res = __nis_finddirectory (dir, leaf);
       if (fd_res == NULL)
         {
           nis_free_directory (dir);
           *status = NIS_NOMEMORY;
           return NULL;
         }
       *status = fd_res->status;
       if (fd_res->status != NIS_SUCCESS)
         {
           /* Try the current directory object, maybe it works */
           __free_fdresult (fd_res);
           return dir;
         }
       nis_free_directory (dir);
       obj = calloc (1, sizeof(directory_obj));
       if (obj == NULL)
         {
           __free_fdresult (fd_res);
           *status = NIS_NOMEMORY;
           return NULL;
         }
       xdrmem_create (&xdrs, fd_res->dir_data.dir_data_val,
                     fd_res->dir_data.dir_data_len, XDR_DECODE);
       _xdr_directory_obj (&xdrs, obj);
       xdr_destroy (&xdrs);
       __free_fdresult (fd_res);
       /* We have found a NIS+ server serving ndomain, now
          let us search for "name" */
       return rec_dirsearch (name, obj, status);
      }
      break;
    case BAD_NAME:
      nis_free_directory (dir);
      *status = NIS_BADNAME;
      return NULL;
    }
  nis_free_directory (dir);
  *status = NIS_FAIL;
  return NULL;
}

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Variable Documentation

Definition at line 120 of file nis_call.c.

Definition at line 122 of file nis_call.c.

Definition at line 124 of file nis_call.c.

Definition at line 123 of file nis_call.c.

Definition at line 121 of file nis_call.c.

Definition at line 581 of file nis_call.c.

struct nis_server_cache * nis_server_cache[16] [static]
static struct timeval = {10, 0} [static]

Definition at line 39 of file nis_call.c.