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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 | ||
23 | nis_error | |
24 | nis_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 | } | |
93 | libnsl_hidden_nolink_def (nis_addmember, GLIBC_2_1) |