1/* Copyright (c) 1997-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <assert.h>
19#include <string.h>
20#include <rpcsvc/nis.h>
21#include <shlib-compat.h>
22
23nis_error
24nis_addmember (const_nis_name member, const_nis_name group)
25{
26 if (group != NULL && group[0] != '\0')
27 {
28 size_t grouplen = strlen (group);
29 char buf[grouplen + 14 + NIS_MAXNAMELEN];
30 char domainbuf[grouplen + 2];
31 nis_result *res, *res2;
32 nis_error status;
33 char *cp, *cp2;
34
35 cp = strchr (nis_leaf_of_r (group, buf, sizeof (buf) - 1), '\0');
36 cp = stpcpy (cp, ".groups_dir");
37 cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
38 if (cp2 != NULL && cp2[0] != '\0')
39 {
40 *cp++ = '.';
41 stpcpy (cp, cp2);
42 }
43 res = nis_lookup (buf, FOLLOW_LINKS | EXPAND_NAME);
44 if (NIS_RES_STATUS (res) != NIS_SUCCESS)
45 {
46 status = NIS_RES_STATUS (res);
47 nis_freeresult (res);
48 return status;
49 }
50 if (NIS_RES_NUMOBJ (res) != 1
51 || __type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ)
52 {
53 nis_freeresult (res);
54 return NIS_INVALIDOBJ;
55 }
56
57 u_int gr_members_len
58 = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
59
60 nis_name *new_gr_members_val
61 = realloc (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val,
62 (gr_members_len + 1) * sizeof (nis_name));
63 if (new_gr_members_val == NULL)
64 goto nomem_out;
65
66 NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val
67 = new_gr_members_val;
68
69 new_gr_members_val[gr_members_len] = strdup (member);
70 if (new_gr_members_val[gr_members_len] == NULL)
71 {
72 nomem_out:
73 nis_freeresult (res);
74 return NIS_NOMEMORY;
75 }
76 ++NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len;
77
78 /* Check the buffer bounds are not exceeded. */
79 assert (strlen (NIS_RES_OBJECT(res)->zo_name) + 1 < grouplen + 14);
80 cp = stpcpy (buf, NIS_RES_OBJECT(res)->zo_name);
81 *cp++ = '.';
82 strncpy (cp, NIS_RES_OBJECT (res)->zo_domain, NIS_MAXNAMELEN);
83 res2 = nis_modify (buf, NIS_RES_OBJECT (res));
84 status = NIS_RES_STATUS (res2);
85 nis_freeresult (res);
86 nis_freeresult (res2);
87
88 return status;
89 }
90 else
91 return NIS_FAIL;
92}
93libnsl_hidden_nolink_def (nis_addmember, GLIBC_2_1)
94