| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (c) 1997-2016 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. |
| 4 | |
| 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. |
| 9 | |
| 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. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <assert.h> |
| 20 | #include <string.h> |
| 21 | #include <rpcsvc/nis.h> |
| 22 | |
| 23 | nis_error |
| 24 | nis_removemember (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 = rawmemchr (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 = stpcpy (cp, "."); |
| 41 | stpcpy (cp, cp2); |
| 42 | } |
| 43 | res = nis_lookup (buf, FOLLOW_LINKS | EXPAND_NAME); |
| 44 | if (res == NULL) |
| 45 | return NIS_NOMEMORY; |
| 46 | if (NIS_RES_STATUS (res) != NIS_SUCCESS) |
| 47 | { |
| 48 | status = NIS_RES_STATUS (res); |
| 49 | nis_freeresult (res); |
| 50 | return status; |
| 51 | } |
| 52 | |
| 53 | if (NIS_RES_NUMOBJ (res) != 1 |
| 54 | || __type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ) |
| 55 | { |
| 56 | nis_freeresult (res); |
| 57 | return NIS_INVALIDOBJ; |
| 58 | } |
| 59 | |
| 60 | nis_name *gr_members_val |
| 61 | = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val; |
| 62 | u_int gr_members_len |
| 63 | = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len; |
| 64 | |
| 65 | u_int j = 0; |
| 66 | for (u_int i = 0; i < gr_members_len; ++i) |
| 67 | if (strcmp (gr_members_val[i], member) != 0) |
| 68 | gr_members_val[j++] = gr_members_val[i]; |
| 69 | else |
| 70 | free (gr_members_val[i]); |
| 71 | |
| 72 | /* There is no need to reallocate the gr_members_val array. We |
| 73 | just adjust the size to match the number of strings still in |
| 74 | it. Yes, xdr_array will use mem_free with a size parameter |
| 75 | but this is mapped to a simple free call which determines the |
| 76 | size of the block by itself. */ |
| 77 | NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = j; |
| 78 | |
| 79 | cp = stpcpy (buf, NIS_RES_OBJECT (res)->zo_name); |
| 80 | *cp++ = '.'; |
| 81 | strncpy (cp, NIS_RES_OBJECT (res)->zo_domain, NIS_MAXNAMELEN); |
| 82 | res2 = nis_modify (buf, NIS_RES_OBJECT (res)); |
| 83 | status = NIS_RES_STATUS (res2); |
| 84 | nis_freeresult (res); |
| 85 | nis_freeresult (res2); |
| 86 | |
| 87 | return status; |
| 88 | } |
| 89 | else |
| 90 | return NIS_FAIL; |
| 91 | } |