113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* password utility routines.
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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* Copyright (C) 2008 by Tito Ragusa <farmatito@tiscali.it>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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#include "libbb.h"
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/* TODO: maybe change API to return malloced data?
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* This will allow to stop using libc functions returning
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* pointers to static data (getpwuid)
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*/
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struct passwd* FAST_FUNC xgetpwnam(const char *name)
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{
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struct passwd *pw = getpwnam(name);
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if (!pw)
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bb_error_msg_and_die("unknown user %s", name);
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return pw;
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}
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struct group* FAST_FUNC xgetgrnam(const char *name)
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{
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struct group *gr = getgrnam(name);
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if (!gr)
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bb_error_msg_and_die("unknown group %s", name);
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return gr;
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}
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struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
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{
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/* Note: used in nofork applets (whoami), be careful not to leak anything */
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struct passwd *pw = getpwuid(uid);
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if (!pw)
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bb_error_msg_and_die("unknown uid %u", (unsigned)uid);
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return pw;
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}
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struct group* FAST_FUNC xgetgrgid(gid_t gid)
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{
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struct group *gr = getgrgid(gid);
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if (!gr)
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bb_error_msg_and_die("unknown gid %u", (unsigned)gid);
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return gr;
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}
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char* FAST_FUNC xuid2uname(uid_t uid)
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{
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/* Note: used in nofork applets (whoami), be careful not to leak anything */
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struct passwd *pw = xgetpwuid(uid);
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return pw->pw_name;
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}
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char* FAST_FUNC xgid2group(gid_t gid)
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{
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struct group *gr = xgetgrgid(gid);
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return gr->gr_name;
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}
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char* FAST_FUNC uid2uname(uid_t uid)
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{
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struct passwd *pw = getpwuid(uid);
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return (pw) ? pw->pw_name : NULL;
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}
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char* FAST_FUNC gid2group(gid_t gid)
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{
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struct group *gr = getgrgid(gid);
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return (gr) ? gr->gr_name : NULL;
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}
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char* FAST_FUNC uid2uname_utoa(uid_t uid)
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{
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char *name = uid2uname(uid);
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return (name) ? name : utoa(uid);
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}
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char* FAST_FUNC gid2group_utoa(gid_t gid)
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{
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char *name = gid2group(gid);
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return (name) ? name : utoa(gid);
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}
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long FAST_FUNC xuname2uid(const char *name)
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{
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struct passwd *myuser;
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myuser = xgetpwnam(name);
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return myuser->pw_uid;
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}
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long FAST_FUNC xgroup2gid(const char *name)
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{
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struct group *mygroup;
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mygroup = xgetgrnam(name);
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return mygroup->gr_gid;
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}
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unsigned long FAST_FUNC get_ug_id(const char *s,
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long FAST_FUNC (*xname2id)(const char *))
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{
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unsigned long r;
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r = bb_strtoul(s, NULL, 10);
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if (errno)
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return xname2id(s);
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return r;
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}
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