hush/libbb/bb_pwd.c
Denis Vlasenko 0c68a874e7 libbb: password/group function helpers rewritten by Tito:
function                                             old     new   delta
xgetpwuid                                              -      27     +27
uid2uname_utoa                                         -      22     +22
gid2group_utoa                                         -      22     +22
uid2uname                                              -      18     +18
gid2group                                              -      18     +18
buffer_fill_and_print                                179     196     +17
print_user                                            12      24     +12
print_group                                           12      24     +12
get_cached                                            89      99     +10
...
print_common                                         134     120     -14
vlock_main                                           415     396     -19
logger_main                                          410     387     -23
crontab_main                                         642     609     -33
bb_getpwuid                                           42       -     -42
bb_getgrgid                                           42       -     -42
bb_getug                                              80       -     -80
------------------------------------------------------------------------------
(add/remove: 6/3 grow/shrink: 9/11 up/down: 187/-296)        Total: -109 bytes
2008-12-02 22:56:59 +00:00

104 lines
2.0 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 the GPL v2 or later, see the file LICENSE in this tarball.
*/
#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)
*/
/* TODO: add xgetpwnam, this construct is used a lot */
struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
{
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)
{
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(long uid)
{
char *name = uid2uname(uid);
return (name) ? name : utoa(uid);
}
char* FAST_FUNC gid2group_utoa(long gid)
{
char *name = gid2group(gid);
return (name) ? name : utoa(gid);
}
long FAST_FUNC xuname2uid(const char *name)
{
struct passwd *myuser;
myuser = getpwnam(name);
if (myuser == NULL)
bb_error_msg_and_die("unknown user %s", name);
return myuser->pw_uid;
}
long FAST_FUNC xgroup2gid(const char *name)
{
struct group *mygroup;
mygroup = getgrnam(name);
if (mygroup == NULL)
bb_error_msg_and_die("unknown group %s", 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;
}