1 files changed, 401 insertions, 0 deletions
diff --git a/REORG.TODO/nis/nss_nisplus/nisplus-grp.c b/REORG.TODO/nis/nss_nisplus/nisplus-grp.c
new file mode 100644
index 0000000000..124b8b85b5
--- /dev/null
+++ b/REORG.TODO/nis/nss_nisplus/nisplus-grp.c
@@ -0,0 +1,401 @@
+/* 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 <nss.h>
+#include <grp.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <libc-lock.h>
+#include <rpcsvc/nis.h>
+
+#include "nss-nisplus.h"
+#include "nisplus-parser.h"
+#include <libnsl.h>
+#include <nis_intern.h>
+#include <nis_xdr.h>
+
+
+__libc_lock_define_initialized (static, lock);
+
+/* Connection information.  */
+static ib_request *ibreq;
+static directory_obj *dir;
+static dir_binding bptr;
+static char *tablepath;
+static char *tableptr;
+/* Cursor.  */
+static netobj cursor;
+
+
+nis_name grp_tablename_val attribute_hidden;
+size_t grp_tablename_len attribute_hidden;
+
+enum nss_status
+_nss_grp_create_tablename (int *errnop)
+{
+  if (grp_tablename_val == NULL)
+    {
+      const char *local_dir = nis_local_directory ();
+      size_t local_dir_len = strlen (local_dir);
+      static const char prefix[] = "group.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);
+
+      grp_tablename_len = sizeof (prefix) - 1 + local_dir_len;
+
+      atomic_write_barrier ();
+
+      if (atomic_compare_and_exchange_bool_acq (&grp_tablename_val, p, NULL))
+	{
+	  /* Another thread already installed the value.  */
+	  free (p);
+	  grp_tablename_len = strlen (grp_tablename_val);
+	}
+    }
+
+  return NSS_STATUS_SUCCESS;
+}
+
+
+static void
+internal_endgrent (void)
+{
+  __nisbind_destroy (&bptr);
+  memset (&bptr, '\0', sizeof (bptr));
+
+  nis_free_directory (dir);
+  dir = NULL;
+
+  nis_free_request (ibreq);
+  ibreq = NULL;
+
+  xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+  memset (&cursor, '\0', sizeof (cursor));
+
+  free (tablepath);
+  tableptr = tablepath = NULL;
+}
+
+
+static enum nss_status
+internal_setgrent (int *errnop)
+{
+  enum nss_status status = NSS_STATUS_SUCCESS;
+
+  if (grp_tablename_val == NULL)
+    status = _nss_grp_create_tablename (errnop);
+
+  if (status == NSS_STATUS_SUCCESS)
+    {
+      ibreq = __create_ib_request (grp_tablename_val, 0);
+      if (ibreq == NULL)
+	{
+	  *errnop = errno;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+
+      nis_error retcode = __prepare_niscall (grp_tablename_val, &dir, &bptr, 0);
+      if (retcode != NIS_SUCCESS)
+	{
+	  nis_free_request (ibreq);
+	  ibreq = NULL;
+	  status = niserr2nss (retcode);
+	}
+    }
+
+  return status;
+}
+
+
+enum nss_status
+_nss_nisplus_setgrent (int stayopen)
+{
+  enum nss_status status;
+
+  __libc_lock_lock (lock);
+
+  internal_endgrent ();
+
+  // XXX We need to be able to set errno.  Pass in new parameter.
+  int err;
+  status = internal_setgrent (&err);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+
+enum nss_status
+_nss_nisplus_endgrent (void)
+{
+  __libc_lock_lock (lock);
+
+  internal_endgrent ();
+
+  __libc_lock_unlock (lock);
+
+  return NSS_STATUS_SUCCESS;
+}
+
+
+static enum nss_status
+internal_nisplus_getgrent_r (struct group *gr, char *buffer, size_t buflen,
+			     int *errnop)
+{
+  int parse_res = -1;
+  enum nss_status retval = NSS_STATUS_SUCCESS;
+
+  /* Get the next entry until we found a correct one. */
+  do
+    {
+      nis_error status;
+      nis_result result;
+      memset (&result, '\0', sizeof (result));
+
+      if (cursor.n_bytes == NULL)
+	{
+	  if (ibreq == NULL)
+	    {
+	      retval = internal_setgrent (errnop);
+	      if (retval != NSS_STATUS_SUCCESS)
+		return retval;
+	    }
+
+	  status = __do_niscall3 (&bptr, NIS_IBFIRST,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
+	}
+      else
+	{
+	  ibreq->ibr_cookie.n_bytes = cursor.n_bytes;
+	  ibreq->ibr_cookie.n_len = cursor.n_len;
+
+	  status = __do_niscall3 (&bptr, NIS_IBNEXT,
+				  (xdrproc_t) _xdr_ib_request,
+				  (caddr_t) ibreq,
+				  (xdrproc_t) _xdr_nis_result,
+				  (caddr_t) &result,
+				  0, NULL);
+
+	  ibreq->ibr_cookie.n_bytes = NULL;
+	  ibreq->ibr_cookie.n_len = 0;
+	}
+
+      if (status != NIS_SUCCESS)
+	return niserr2nss (status);
+
+      if (NIS_RES_STATUS (&result) == NIS_NOTFOUND)
+	{
+	  /* No more entries on this server.  This means we have to go
+	     to the next server on the path.  */
+	  status = __follow_path (&tablepath, &tableptr, ibreq, &bptr);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  directory_obj *newdir = NULL;
+	  dir_binding newbptr;
+	  status = __prepare_niscall (ibreq->ibr_name, &newdir, &newbptr, 0);
+	  if (status != NIS_SUCCESS)
+	    return niserr2nss (status);
+
+	  nis_free_directory (dir);
+	  dir = newdir;
+	  __nisbind_destroy (&bptr);
+	  bptr = newbptr;
+
+	  xdr_free ((xdrproc_t) xdr_netobj, (char *) &result.cookie);
+	  result.cookie.n_bytes = NULL;
+	  result.cookie.n_len = 0;
+	  parse_res = 0;
+	  goto next;
+	}
+      else if (NIS_RES_STATUS (&result) != NIS_SUCCESS)
+	return niserr2nss (NIS_RES_STATUS (&result));
+
+      parse_res = _nss_nisplus_parse_grent (&result, gr,
+					    buffer, buflen, errnop);
+      if (__glibc_unlikely (parse_res == -1))
+	{
+	  *errnop = ERANGE;
+	  retval = NSS_STATUS_TRYAGAIN;
+	  goto freeres;
+	}
+
+    next:
+      /* Free the old cursor.  */
+      xdr_free ((xdrproc_t) xdr_netobj, (char *) &cursor);
+      /* Remember the new one.  */
+      cursor.n_bytes = result.cookie.n_bytes;
+      cursor.n_len = result.cookie.n_len;
+      /* Free the result structure.  NB: we do not remove the cookie.  */
+      result.cookie.n_bytes = NULL;
+      result.cookie.n_len = 0;
+    freeres:
+      xdr_free ((xdrproc_t) _xdr_nis_result, (char *) &result);
+      memset (&result, '\0', sizeof (result));
+    }
+  while (!parse_res);
+
+  return retval;
+}
+
+enum nss_status
+_nss_nisplus_getgrent_r (struct group *result, char *buffer, size_t buflen,
+			 int *errnop)
+{
+  int status;
+
+  __libc_lock_lock (lock);
+
+  status = internal_nisplus_getgrent_r (result, buffer, buflen, errnop);
+
+  __libc_lock_unlock (lock);
+
+  return status;
+}
+
+enum nss_status
+_nss_nisplus_getgrnam_r (const char *name, struct group *gr,
+			 char *buffer, size_t buflen, int *errnop)
+{
+  int parse_res;
+
+  if (grp_tablename_val == NULL)
+    {
+      enum nss_status status = _nss_grp_create_tablename (errnop);
+
+      if (status != NSS_STATUS_SUCCESS)
+	return status;
+    }
+
+  if (name == NULL)
+    {
+      *errnop = EINVAL;
+      return NSS_STATUS_NOTFOUND;
+    }
+
+  nis_result *result;
+  char buf[strlen (name) + 9 + grp_tablename_len];
+  int olderr = errno;
+
+  snprintf (buf, sizeof (buf), "[name=%s],%s", name, grp_tablename_val);
+
+  result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, 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);
+
+      nis_freeresult (result);
+      return status;
+    }
+
+  parse_res = _nss_nisplus_parse_grent (result, gr, buffer, buflen, errnop);
+  nis_freeresult (result);
+  if (__glibc_unlikely (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;
+}
+
+enum nss_status
+_nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr,
+			 char *buffer, size_t buflen, int *errnop)
+{
+  if (grp_tablename_val == NULL)
+    {
+      enum nss_status status = _nss_grp_create_tablename (errnop);
+
+      if (status != NSS_STATUS_SUCCESS)
+	return status;
+    }
+
+  int parse_res;
+  nis_result *result;
+  char buf[8 + 3 * sizeof (unsigned long int) + grp_tablename_len];
+  int olderr = errno;
+
+  snprintf (buf, sizeof (buf), "[gid=%lu],%s",
+	    (unsigned long int) gid, grp_tablename_val);
+
+  result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, 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_grent (result, gr, buffer, buflen, errnop);
+
+  nis_freeresult (result);
+  if (__glibc_unlikely (parse_res < 1))
+    {
+      __set_errno (olderr);
+
+      if (parse_res == -1)
+	{
+	  *errnop = ERANGE;
+	  return NSS_STATUS_TRYAGAIN;
+	}
+      else
+	return NSS_STATUS_NOTFOUND;
+    }
+
+  return NSS_STATUS_SUCCESS;
+}