Update.
[glibc.git] / nis / nis_removemember.c
blobb9e27ab48c9b156367dd6c3e9ce007867fa38793
1 /* Copyright (c) 1997, 1998, 1999, 2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <assert.h>
21 #include <string.h>
22 #include <rpcsvc/nis.h>
24 nis_error
25 nis_removemember (const_nis_name member, const_nis_name group)
27 if (group != NULL && group[0] != '\0')
29 size_t grouplen = strlen (group);
30 char buf[grouplen + 14 + NIS_MAXNAMELEN];
31 char leafbuf[grouplen + 2];
32 char domainbuf[grouplen + 2];
33 nis_name *newmem;
34 nis_result *res, *res2;
35 nis_error status;
36 char *cp, *cp2;
37 unsigned long int i, j, k;
39 cp = stpcpy (buf, nis_leaf_of_r (group, leafbuf, sizeof (leafbuf) - 1));
40 cp = stpcpy (cp, ".groups_dir");
41 cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
42 if (cp2 != NULL && cp2[0] != '\0')
44 cp = stpcpy (cp, ".");
45 stpcpy (cp, cp2);
47 res = nis_lookup (buf, FOLLOW_LINKS|EXPAND_NAME);
48 if (res == NULL || NIS_RES_STATUS (res) != NIS_SUCCESS)
50 if (res)
52 status = NIS_RES_STATUS (res);
53 nis_freeresult (res);
55 else
56 return NIS_NOMEMORY;
57 return status;
60 if ((res->objects.objects_len != 1) ||
61 (__type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ))
63 nis_freeresult (res);
64 return NIS_INVALIDOBJ;
67 newmem =
68 calloc (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len,
69 sizeof (char *));
70 if (newmem == NULL)
71 return NIS_NOMEMORY;
73 k = NIS_RES_OBJECT (res)[0].GR_data.gr_members.gr_members_len;
74 j = 0;
75 for (i = 0; i < NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
76 ++i)
78 if (strcmp (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i],
79 member) != 0)
81 newmem[j] = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i];
82 ++j;
84 else
86 free (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i]);
87 --k;
90 free (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val);
91 assert (k <= NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len);
92 /* This realloc() call always decreases the size. This cannot
93 fail. We still have the test but do not recover memory
94 (i.e., we overwrite the input pointer). */
95 newmem = realloc (newmem, k * sizeof (char*));
96 if (newmem == NULL)
97 return NIS_NOMEMORY;
99 NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val = newmem;
100 NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = k;
102 cp = stpcpy (buf, NIS_RES_OBJECT (res)->zo_name);
103 *cp++ = '.';
104 strncpy (cp, NIS_RES_OBJECT (res)->zo_domain, NIS_MAXNAMELEN);
105 res2 = nis_modify (buf, NIS_RES_OBJECT (res));
106 status = NIS_RES_STATUS (res2);
107 nis_freeresult (res);
108 nis_freeresult (res2);
110 return status;
112 else
113 return NIS_FAIL;