[821] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * password utility routines.
|
---|
| 4 | *
|
---|
| 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
---|
[2725] | 6 | * Copyright (C) 2008 by Tito Ragusa <farmatito@tiscali.it>
|
---|
[821] | 7 | *
|
---|
[2725] | 8 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
[821] | 9 | */
|
---|
| 10 |
|
---|
[1765] | 11 | #include "libbb.h"
|
---|
[821] | 12 |
|
---|
[2725] | 13 | /* TODO: maybe change API to return malloced data?
|
---|
| 14 | * This will allow to stop using libc functions returning
|
---|
| 15 | * pointers to static data (getpwuid)
|
---|
| 16 | */
|
---|
[821] | 17 |
|
---|
[2725] | 18 | struct passwd* FAST_FUNC xgetpwnam(const char *name)
|
---|
[1765] | 19 | {
|
---|
[2725] | 20 | struct passwd *pw = getpwnam(name);
|
---|
| 21 | if (!pw)
|
---|
| 22 | bb_error_msg_and_die("unknown user %s", name);
|
---|
| 23 | return pw;
|
---|
[1765] | 24 | }
|
---|
[821] | 25 |
|
---|
[2725] | 26 | struct group* FAST_FUNC xgetgrnam(const char *name)
|
---|
[1765] | 27 | {
|
---|
[2725] | 28 | struct group *gr = getgrnam(name);
|
---|
| 29 | if (!gr)
|
---|
| 30 | bb_error_msg_and_die("unknown group %s", name);
|
---|
| 31 | return gr;
|
---|
| 32 | }
|
---|
[1765] | 33 |
|
---|
[2725] | 34 |
|
---|
| 35 | struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
|
---|
| 36 | {
|
---|
| 37 | struct passwd *pw = getpwuid(uid);
|
---|
| 38 | if (!pw)
|
---|
| 39 | bb_error_msg_and_die("unknown uid %u", (unsigned)uid);
|
---|
| 40 | return pw;
|
---|
[1765] | 41 | }
|
---|
[2725] | 42 |
|
---|
| 43 | struct group* FAST_FUNC xgetgrgid(gid_t gid)
|
---|
[821] | 44 | {
|
---|
[2725] | 45 | struct group *gr = getgrgid(gid);
|
---|
| 46 | if (!gr)
|
---|
| 47 | bb_error_msg_and_die("unknown gid %u", (unsigned)gid);
|
---|
| 48 | return gr;
|
---|
| 49 | }
|
---|
[821] | 50 |
|
---|
[2725] | 51 | char* FAST_FUNC xuid2uname(uid_t uid)
|
---|
| 52 | {
|
---|
| 53 | struct passwd *pw = xgetpwuid(uid);
|
---|
| 54 | return pw->pw_name;
|
---|
[821] | 55 | }
|
---|
| 56 |
|
---|
[2725] | 57 | char* FAST_FUNC xgid2group(gid_t gid)
|
---|
[821] | 58 | {
|
---|
[2725] | 59 | struct group *gr = xgetgrgid(gid);
|
---|
| 60 | return gr->gr_name;
|
---|
| 61 | }
|
---|
[821] | 62 |
|
---|
[2725] | 63 | char* FAST_FUNC uid2uname(uid_t uid)
|
---|
| 64 | {
|
---|
| 65 | struct passwd *pw = getpwuid(uid);
|
---|
| 66 | return (pw) ? pw->pw_name : NULL;
|
---|
| 67 | }
|
---|
[821] | 68 |
|
---|
[2725] | 69 | char* FAST_FUNC gid2group(gid_t gid)
|
---|
| 70 | {
|
---|
| 71 | struct group *gr = getgrgid(gid);
|
---|
| 72 | return (gr) ? gr->gr_name : NULL;
|
---|
[821] | 73 | }
|
---|
| 74 |
|
---|
[3232] | 75 | char* FAST_FUNC uid2uname_utoa(uid_t uid)
|
---|
[821] | 76 | {
|
---|
[2725] | 77 | char *name = uid2uname(uid);
|
---|
| 78 | return (name) ? name : utoa(uid);
|
---|
| 79 | }
|
---|
| 80 |
|
---|
[3232] | 81 | char* FAST_FUNC gid2group_utoa(gid_t gid)
|
---|
[2725] | 82 | {
|
---|
| 83 | char *name = gid2group(gid);
|
---|
| 84 | return (name) ? name : utoa(gid);
|
---|
| 85 | }
|
---|
| 86 |
|
---|
| 87 | long FAST_FUNC xuname2uid(const char *name)
|
---|
| 88 | {
|
---|
[821] | 89 | struct passwd *myuser;
|
---|
| 90 |
|
---|
[2725] | 91 | myuser = xgetpwnam(name);
|
---|
[821] | 92 | return myuser->pw_uid;
|
---|
| 93 | }
|
---|
| 94 |
|
---|
[2725] | 95 | long FAST_FUNC xgroup2gid(const char *name)
|
---|
[821] | 96 | {
|
---|
[2725] | 97 | struct group *mygroup;
|
---|
| 98 |
|
---|
| 99 | mygroup = xgetgrnam(name);
|
---|
| 100 | return mygroup->gr_gid;
|
---|
| 101 | }
|
---|
| 102 |
|
---|
| 103 | unsigned long FAST_FUNC get_ug_id(const char *s,
|
---|
| 104 | long FAST_FUNC (*xname2id)(const char *))
|
---|
| 105 | {
|
---|
[821] | 106 | unsigned long r;
|
---|
| 107 |
|
---|
[1765] | 108 | r = bb_strtoul(s, NULL, 10);
|
---|
| 109 | if (errno)
|
---|
| 110 | return xname2id(s);
|
---|
[821] | 111 | return r;
|
---|
| 112 | }
|
---|