1 files changed, 444 insertions, 0 deletions
diff --git a/REORG.TODO/nis/nss_nisplus/nisplus-rpc.c b/REORG.TODO/nis/nss_nisplus/nisplus-rpc.c
new file mode 100644
index 0000000000..977d85a574
--- /dev/null
+++ b/REORG.TODO/nis/nss_nisplus/nisplus-rpc.c
@@ -0,0 +1,444 @@
+/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <atomic.h>
+#include <ctype.h>
+#include <errno.h>
+#include <nss.h>
+#include <string.h>
+#include <rpc/netdb.h>
+#include <rpcsvc/nis.h>
+#include <libc-lock.h>
+
+#include "nss-nisplus.h"
+
+__libc_lock_define_initialized (static, lock)
+
+static nis_result *result;
+static nis_name tablename_val;
+static u_long tablename_len;
+
+#define NISENTRYVAL(idx, col, res) \
+        (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val)
+
+#define NISENTRYLEN(idx, col, res) \
+        (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len)
+
+
+static int
+_nss_nisplus_parse_rpcent (nis_result *result, struct rpcent *rpc,
+			   char *buffer, size_t buflen, int *errnop)
+{
+  char *first_unused = buffer;
+  size_t room_left = buflen;
+  unsigned int i;
+  char *line;
+
+
+  if (result == NULL)
+    return 0;
+
+  if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
+      || __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
+      || strcmp (NIS_RES_OBJECT (result)[0].EN_data.en_type, "rpc_tbl") != 0
+      || NIS_RES_OBJECT (result)[0].EN_data.en_cols.en_cols_len < 3)
+    return 0;
+
+  if (NISENTRYLEN (0, 0, result) >= room_left)
+    {
+    no_more_room:
+      *errnop = ERANGE;
+      return -1;
+    }
+  strncpy (first_unused, NISENTRYVAL (0, 0, result),
+           NISENTRYLEN (0, 0, result));
+  first_unused[NISENTRYLEN (0, 0, result)] = '\0';
+  rpc->r_name = first_unused;
+  size_t len = strlen (first_unused) + 1;
+  room_left -= len;
+  first_unused += len;
+
+  rpc->r_number = atoi (NISENTRYVAL (0, 2, result));
+
+  /* XXX Rewrite at some point to allocate the array first and then
+     copy the strings.  It wasteful to first concatenate the strings
+     to just split them again later.  */
+  line = first_unused;
+  for (i = 0; i < NIS_RES_NUMOBJ (result); ++i)
+    {
+      if (strcmp (NISENTRYVAL (i, 1, result), rpc->r_name) != 0)
+        {
+          if (NISENTRYLEN (i, 1, result) + 2 > room_left)
+	    goto no_more_room;
+	  *first_unused++ = ' ';
+          first_unused = __stpncpy (first_unused, NISENTRYVAL (i, 1, result),
+				    NISENTRYLEN (i, 1, result));
+          room_left -= NISENTRYLEN (i, 1, result) + 1;
+        }
+    }
+  *first_unused++ = '\0';
+
+  /* Adjust the pointer so it is aligned for
+     storing pointers.  */
+  size_t adjust = ((__alignof__ (char *)
+		    - (first_unused - (char *) 0) % __alignof__ (char *))
+		   % __alignof__ (char *));
+  if (room_left < adjust + sizeof (char *))
+    goto no_more_room;
+  first_unused += adjust;
+  room_left -= adjust;
+  rpc->r_aliases = (char **) first_unused;
+
+  /* For the terminating NULL pointer.  */
+  room_left -= sizeof (char *);
+
+  i = 0;
+  while (*line != '\0')
+    {
+      /* Skip leading blanks.  */
+      while (isspace (*line))
+        ++line;
+
+      if (*line == '\0')
+        break;
+
+      if (room_left < sizeof (char *))
+	goto no_more_room;
+
+      room_left -= sizeof (char *);
+      rpc->r_aliases[i++] = line;
+
+      while (*line != '\0' && *line != ' ')
+        ++line;
+
+      if (*line == ' ')
+	*line++ = '\0';
+    }
+  rpc->r_aliases[i] = NULL;
+
+  return 1;
+}
+
+
+static enum nss_status
+_nss_create_tablename (int *errnop)
+{
+  if (tablename_val == NULL)
+    {
+      const char *local_dir = nis_local_directory ();
+      size_t local_dir_len = strlen (local_dir);
+      static const char prefix[] = "rpc.org_dir.";
+
+      char *p = malloc (sizeof (prefix) + local_dir_len);
+      if (p == NULL)
+	{
+	  *errnop = errno;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      memcpy (__stpcpy (p, prefix), local_dir, local_dir_len + 1);
+
+      tablename_len = sizeof (prefix) - 1 + local_dir_len;
+
+      atomic_write_barrier ();
+
+      tablename_val = p;
+    }
+
+  return NSS_STATUS_SUCCESS;
+}
+
+
+enum nss_status
+_nss_nisplus_setrpcent (int stayopen)
+{
+  enum nss_status status = NSS_STATUS_SUCCESS;
+
+  __libc_lock_lock (lock);
+
+  if (result != NULL)
+    {
+      nis_freeresult (result);
+      result = NULL;
+    }
+
+  if (tablename_val == NULL)
+    {
+      int err;
+      status = _nss_create_tablename (&err);
+    }
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nisplus_endrpcent (void)
+{
+  __libc_lock_lock (lock);
+
+  if (result != NULL)
+    {
+      nis_freeresult (result);
+      result = NULL;
+    }
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nisplus_getrpcent_r (struct rpcent *rpc, char *buffer,
+			      size_t buflen, int *errnop)
+{
+  int parse_res;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      nis_result *saved_res;
+
+      if (result == NULL)
+	{
+	  saved_res = NULL;
+          if (tablename_val == NULL)
+	    {
+	      enum nss_status status =  _nss_create_tablename (errnop);
+
+	      if (status != NSS_STATUS_SUCCESS)
+		return status;
+	    }
+
+	  result = nis_first_entry (tablename_val);
+	  if (result == NULL)
+	    {
+	      *errnop = errno;
+	      return NSS_STATUS_TRYAGAIN;
+	    }
+	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+	    return niserr2nss (result->status);
+	}
+      else
+	{
+	  saved_res = result;
+	  result = nis_next_entry (tablename_val, &result->cookie);
+	  if (result == NULL)
+	    {
+	      *errnop = errno;
+	      return NSS_STATUS_TRYAGAIN;
+	    }
+	  if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+	    {
+	      nis_freeresult (saved_res);
+	      return niserr2nss (result->status);
+	    }
+	}
+
+      parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer,
+					     buflen, errnop);
+      if (parse_res == -1)
+	{
+	  nis_freeresult (result);
+	  result = saved_res;
+	  *errnop = ERANGE;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  if (saved_res)
+	    nis_freeresult (saved_res);
+	}
+    }
+  while (!parse_res);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_getrpcent_r (struct rpcent *result, char *buffer,
+			  size_t buflen, int *errnop)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nisplus_getrpcent_r (result, buffer, buflen, errnop);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nisplus_getrpcbyname_r (const char *name, struct rpcent *rpc,
+			     char *buffer, size_t buflen, int *errnop)
+{
+  int parse_res;
+
+  if (tablename_val == NULL)
+    {
+      __libc_lock_lock (lock);
+
+      enum nss_status status = _nss_create_tablename (errnop);
+
+      __libc_lock_unlock (lock);
+
+      if (status != NSS_STATUS_SUCCESS)
+	return status;
+    }
+
+  if (name == NULL)
+    return NSS_STATUS_NOTFOUND;
+
+  char buf[strlen (name) + 10 + tablename_len];
+  int olderr = errno;
+
+  /* Search at first in the alias list, and use the correct name
+     for the next search */
+  snprintf (buf, sizeof (buf), "[name=%s],%s", name, tablename_val);
+  nis_result *result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM,
+				 NULL, NULL);
+
+  if (result != NULL)
+    {
+      char *bufptr = buf;
+
+      /* If we did not find it, try it as original name. But if the
+	 database is correct, we should find it in the first case, too */
+      if ((result->status != NIS_SUCCESS
+	   && result->status != NIS_S_SUCCESS)
+	  || __type_of (result->objects.objects_val) != NIS_ENTRY_OBJ
+	  || strcmp (result->objects.objects_val->EN_data.en_type,
+		     "rpc_tbl") != 0
+	  || result->objects.objects_val->EN_data.en_cols.en_cols_len < 3)
+	snprintf (buf, sizeof (buf), "[cname=%s],%s", name, tablename_val);
+      else
+	{
+	  /* We need to allocate a new buffer since there is no
+	     guarantee the returned name has a length limit.  */
+	  const char *entryval = NISENTRYVAL (0, 0, result);
+	  size_t buflen = strlen (entryval) + 10 + tablename_len;
+	  bufptr = alloca (buflen);
+	  snprintf (bufptr, buflen, "[cname=%s],%s",
+		    entryval, tablename_val);
+	}
+
+      nis_freeresult (result);
+      result = nis_list (bufptr, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM,
+			 NULL, NULL);
+    }
+
+  if (result == NULL)
+    {
+      *errnop = ENOMEM;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  if (__glibc_unlikely (niserr2nss (result->status) != NSS_STATUS_SUCCESS))
+    {
+      enum nss_status status = niserr2nss (result->status);
+
+      __set_errno (olderr);
+
+      nis_freeresult (result);
+      return status;
+    }
+
+  parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, buflen,
+					     errnop);
+
+  nis_freeresult (result);
+
+  if (parse_res < 1)
+    {
+      if (parse_res == -1)
+	{
+	  *errnop = ERANGE;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      __set_errno (olderr);
+      return NSS_STATUS_NOTFOUND;
+    }
+
+  return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_getrpcbynumber_r (const int number, struct rpcent *rpc,
+			       char *buffer, size_t buflen, int *errnop)
+{
+  if (tablename_val == NULL)
+    {
+      __libc_lock_lock (lock);
+
+      enum nss_status status = _nss_create_tablename (errnop);
+
+      __libc_lock_unlock (lock);
+
+      if (status != NSS_STATUS_SUCCESS)
+	return status;
+    }
+
+  char buf[12 + 3 * sizeof (number) + tablename_len];
+  int olderr = errno;
+
+  snprintf (buf, sizeof (buf), "[number=%d],%s", number, tablename_val);
+
+  nis_result *result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH | USE_DGRAM,
+				 NULL, NULL);
+
+  if (result == NULL)
+    {
+      *errnop = ENOMEM;
+      return NSS_STATUS_TRYAGAIN;
+    }
+
+  if (__builtin_expect (niserr2nss (result->status) != NSS_STATUS_SUCCESS,  0))
+    {
+      enum nss_status status = niserr2nss (result->status);
+
+      __set_errno (olderr);
+
+      nis_freeresult (result);
+      return status;
+    }
+
+  int parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, buflen,
+					     errnop);
+
+  nis_freeresult (result);
+
+  if (parse_res < 1)
+    {
+      if (parse_res == -1)
+	{
+	  *errnop = ERANGE;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	{
+	  __set_errno (olderr);
+	  return NSS_STATUS_NOTFOUND;
+	}
+    }
+
+  return NSS_STATUS_SUCCESS;
+}