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