/* 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; }