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/* vi: set sw=4 ts=4: */
/*
* Mini id implementation for busybox
*
* Copyright (C) 2000 by Randolph Chung <tausq@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* BB_AUDIT SUSv3 _NOT_ compliant -- option -G is not currently supported. */
/* Hacked by Tito Ragusa (C) 2004 to handle usernames of whatever length and to
* be more similar to GNU id.
*/
#include "busybox.h"
#include "grp_.h"
#include "pwd_.h"
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <sys/types.h>
#ifdef CONFIG_SELINUX
#include <proc_secure.h>
#include <flask_util.h>
#endif
#define PRINT_REAL 1
#define NAME_NOT_NUMBER 2
#define JUST_USER 4
#define JUST_GROUP 8
void printf_full(unsigned int id, char *arg, char prefix)
{
printf("%cid=%u",prefix, id);
if(arg)
printf("(%s) ", arg);
}
extern int id_main(int argc, char **argv)
{
struct passwd *p;
char *user;
char *group;
uid_t uid;
gid_t gid;
int flags;
#ifdef CONFIG_SELINUX
int is_flask_enabled_flag = is_flask_enabled();
#endif
bb_opt_complementaly = "u~g:g~u";
flags = bb_getopt_ulflags(argc, argv, "rnug");
if ((flags & 0x80000000UL)
/* Don't allow -n -r -nr */
|| (flags <= 3 && flags > 0)
|| (argc > optind + 1))
bb_show_usage();
/* This values could be overwritten later */
uid = geteuid();
gid = getegid();
if (flags & PRINT_REAL) {
uid = getuid();
gid = getgid();
}
if(argv[optind])
{
p=getpwnam(argv[optind]);
/* this is needed because it exits on failure */
uid = my_getpwnam(argv[optind]);
gid = p->pw_gid;
/* in this case PRINT_REAL is the same */
}
user=my_getpwuid(NULL, uid, (flags & JUST_USER) ? -1 : 0);
if(flags & JUST_USER)
{
gid=uid;
group=user;
goto PRINT;
}
group=my_getgrgid(NULL, gid, (flags & JUST_GROUP) ? -1 : 0);
if(flags & JUST_GROUP)
{
PRINT:
if(flags & NAME_NOT_NUMBER)
puts(group);
else
printf ("%u\n", gid);
bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
/* Print full info like GNU id */
printf_full(uid, user, 'u');
printf_full(gid, group, 'g');
#ifdef CONFIG_SELINUX
if(is_flask_enabled_flag)
{
security_id_t mysid = getsecsid();
char context[80];
int len = sizeof(context);
context[0] = '\0';
if(security_sid_to_context(mysid, context, &len))
strcpy(context, "unknown");
printf("context=%s", context);
}
#endif
puts("");
bb_fflush_stdout_and_exit((user && group) ? EXIT_SUCCESS : EXIT_FAILURE);
}
/* END CODE */
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
|
