Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / nis / nis_removemember.c

diff --git a/nis/nis_removemember.c b/nis/nis_removemember.c
index 4fa8893a84e73c142877d0e410d053befcbf4943..215e2e69e52bf9460ac3adf365bb47e11f28fd8e 100644 (file)
--- a/nis/nis_removemember.c
+++ b/nis/nis_removemember.c
@@ -1,24 +1,25 @@
-/* Copyright (c) 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (c) 1997-2020 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 Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   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
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA. */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
+#include <assert.h>
 #include <string.h>
 #include <rpcsvc/nis.h>
+#include <shlib-compat.h>
 
 nis_error
 nis_removemember (const_nis_name member, const_nis_name group)
@@ -27,15 +28,12 @@ nis_removemember (const_nis_name member, const_nis_name group)
     {
       size_t grouplen = strlen (group);
       char buf[grouplen + 14 + NIS_MAXNAMELEN];
-      char leafbuf[grouplen + 2];
       char domainbuf[grouplen + 2];
-      nis_name *newmem;
       nis_result *res, *res2;
       nis_error status;
       char *cp, *cp2;
-      unsigned long int i, j, k;
 
-      cp = stpcpy (buf, nis_leaf_of_r (group, leafbuf, sizeof (leafbuf) - 1));
+      cp = rawmemchr (nis_leaf_of_r (group, buf, sizeof (buf) - 1), '\0');
       cp = stpcpy (cp, ".groups_dir");
       cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
       if (cp2 != NULL && cp2[0] != '\0')
@@ -43,46 +41,41 @@ nis_removemember (const_nis_name member, const_nis_name group)
           cp = stpcpy (cp, ".");
           stpcpy (cp, cp2);
         }
-      res = nis_lookup (buf, FOLLOW_LINKS|EXPAND_NAME);
+      res = nis_lookup (buf, FOLLOW_LINKS | EXPAND_NAME);
+      if (res == NULL)
+       return NIS_NOMEMORY;
       if (NIS_RES_STATUS (res) != NIS_SUCCESS)
         {
-          status = NIS_RES_STATUS (res);
-          nis_freeresult (res);
+         status = NIS_RES_STATUS (res);
+         nis_freeresult (res);
           return status;
         }
 
-      if ((res->objects.objects_len != 1) ||
-          (__type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ))
-        return NIS_INVALIDOBJ;
-
-      newmem =
-       calloc (1, NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len *
-               sizeof (char *));
-      if (newmem == NULL)
-       return NIS_NOMEMORY;
-      k = NIS_RES_OBJECT (res)[0].GR_data.gr_members.gr_members_len;
-      j = 0;
-      for (i = 0; i < NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
-          ++i)
+      if (NIS_RES_NUMOBJ (res) != 1
+         || __type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ)
        {
-         if (strcmp (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i],
-                     member) != 0)
-           {
-             newmem[j] = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i];
-             ++j;
-           }
-         else
-           {
-             free (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i]);
-             --k;
-           }
+         nis_freeresult (res);
+         return NIS_INVALIDOBJ;
        }
-      free (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val);
-      newmem = realloc (newmem, k * sizeof (char*));
-      if (newmem == NULL)
-       return NIS_NOMEMORY;
-      NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val = newmem;
-      NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = k;
+
+      nis_name *gr_members_val
+       = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val;
+      u_int gr_members_len
+       = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
+
+      u_int j = 0;
+      for (u_int i = 0; i < gr_members_len; ++i)
+       if (strcmp (gr_members_val[i], member) != 0)
+         gr_members_val[j++] = gr_members_val[i];
+       else
+         free (gr_members_val[i]);
+
+      /* There is no need to reallocate the gr_members_val array.  We
+        just adjust the size to match the number of strings still in
+        it.  Yes, xdr_array will use mem_free with a size parameter
+        but this is mapped to a simple free call which determines the
+        size of the block by itself.  */
+      NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = j;
 
       cp = stpcpy (buf, NIS_RES_OBJECT (res)->zo_name);
       *cp++ = '.';
@@ -97,3 +90,4 @@ nis_removemember (const_nis_name member, const_nis_name group)
   else
     return NIS_FAIL;
 }
+libnsl_hidden_nolink_def (nis_removemember, GLIBC_2_1)