mirror of
https://git.busybox.net/busybox.git
synced 2024-12-18 09:53:23 +08:00
113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* password utility routines.
|
|
*
|
|
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
|
* Copyright (C) 2008 by Tito Ragusa <farmatito@tiscali.it>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
#include "libbb.h"
|
|
|
|
/* TODO: maybe change API to return malloced data?
|
|
* This will allow to stop using libc functions returning
|
|
* pointers to static data (getpwuid)
|
|
*/
|
|
|
|
struct passwd* FAST_FUNC xgetpwnam(const char *name)
|
|
{
|
|
struct passwd *pw = getpwnam(name);
|
|
if (!pw)
|
|
bb_error_msg_and_die("unknown user %s", name);
|
|
return pw;
|
|
}
|
|
|
|
struct group* FAST_FUNC xgetgrnam(const char *name)
|
|
{
|
|
struct group *gr = getgrnam(name);
|
|
if (!gr)
|
|
bb_error_msg_and_die("unknown group %s", name);
|
|
return gr;
|
|
}
|
|
|
|
struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
|
|
{
|
|
/* Note: used in nofork applets (whoami), be careful not to leak anything */
|
|
struct passwd *pw = getpwuid(uid);
|
|
if (!pw)
|
|
bb_error_msg_and_die("unknown uid %u", (unsigned)uid);
|
|
return pw;
|
|
}
|
|
|
|
struct group* FAST_FUNC xgetgrgid(gid_t gid)
|
|
{
|
|
struct group *gr = getgrgid(gid);
|
|
if (!gr)
|
|
bb_error_msg_and_die("unknown gid %u", (unsigned)gid);
|
|
return gr;
|
|
}
|
|
|
|
char* FAST_FUNC xuid2uname(uid_t uid)
|
|
{
|
|
/* Note: used in nofork applets (whoami), be careful not to leak anything */
|
|
struct passwd *pw = xgetpwuid(uid);
|
|
return pw->pw_name;
|
|
}
|
|
|
|
char* FAST_FUNC xgid2group(gid_t gid)
|
|
{
|
|
struct group *gr = xgetgrgid(gid);
|
|
return gr->gr_name;
|
|
}
|
|
|
|
char* FAST_FUNC uid2uname(uid_t uid)
|
|
{
|
|
struct passwd *pw = getpwuid(uid);
|
|
return (pw) ? pw->pw_name : NULL;
|
|
}
|
|
|
|
char* FAST_FUNC gid2group(gid_t gid)
|
|
{
|
|
struct group *gr = getgrgid(gid);
|
|
return (gr) ? gr->gr_name : NULL;
|
|
}
|
|
|
|
char* FAST_FUNC uid2uname_utoa(uid_t uid)
|
|
{
|
|
char *name = uid2uname(uid);
|
|
return (name) ? name : utoa(uid);
|
|
}
|
|
|
|
char* FAST_FUNC gid2group_utoa(gid_t gid)
|
|
{
|
|
char *name = gid2group(gid);
|
|
return (name) ? name : utoa(gid);
|
|
}
|
|
|
|
long FAST_FUNC xuname2uid(const char *name)
|
|
{
|
|
struct passwd *myuser;
|
|
|
|
myuser = xgetpwnam(name);
|
|
return myuser->pw_uid;
|
|
}
|
|
|
|
long FAST_FUNC xgroup2gid(const char *name)
|
|
{
|
|
struct group *mygroup;
|
|
|
|
mygroup = xgetgrnam(name);
|
|
return mygroup->gr_gid;
|
|
}
|
|
|
|
unsigned long FAST_FUNC get_ug_id(const char *s,
|
|
long FAST_FUNC (*xname2id)(const char *))
|
|
{
|
|
unsigned long r;
|
|
|
|
r = bb_strtoul(s, NULL, 10);
|
|
if (errno)
|
|
return xname2id(s);
|
|
return r;
|
|
}
|