*
* 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
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* 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.
+ * 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>
+#include <selinux/selinux.h> /* for is_selinux_enabled() */
#endif
#define PRINT_REAL 1
#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);
+static short printf_full(unsigned int id, const char *arg, const char prefix)
+{
+ const char *fmt = "%cid=%u";
+ short status = EXIT_FAILURE;
+
+ if (arg) {
+ fmt = "%cid=%u(%s)";
+ status = EXIT_SUCCESS;
+ }
+ printf(fmt, prefix, id, arg);
+ return status;
}
-extern int id_main(int argc, char **argv)
+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
+ unsigned long flags;
+ short status;
- bb_opt_complementaly = "u~g:g~u";
- flags = bb_getopt_ulflags(argc, argv, "rnug");
+ /* Don't allow -n -r -nr -ug -rug -nug -rnug */
+ /* Don't allow more than one username */
+ opt_complementary = "?1:?:u--g:g--u:r?ug:n?ug";
+ flags = getopt32(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();
uid = getuid();
gid = getgid();
}
-
- if(argv[optind])
- {
- p=getpwnam(argv[optind]);
- /* this is needed because it exits on failure */
- uid = my_getpwnam(argv[optind]);
+ if (argv[optind]) {
+ p = getpwnam(argv[optind]);
+ /* bb_xgetpwnam is needed because it exits on failure */
+ uid = bb_xgetpwnam(argv[optind]);
gid = p->pw_gid;
- /* in this case PRINT_REAL is the same */
+ /* 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;
+ if (flags & (JUST_GROUP | JUST_USER)) {
+ /* JUST_GROUP and JUST_USER are mutually exclusive */
+ if (flags & NAME_NOT_NUMBER) {
+ /* bb_getpwuid and bb_getgrgid exit on failure so puts cannot segfault */
+ puts((flags & JUST_USER) ? bb_getpwuid(NULL, uid, -1 ) : bb_getgrgid(NULL, gid, -1 ));
+ } else {
+ printf("%u\n", (flags & JUST_USER) ? uid : gid);
+ }
+ /* exit */
+ fflush_stdout_and_exit(EXIT_SUCCESS);
}
-
- 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');
+ /* bb_getpwuid doesn't exit on failure here */
+ status = printf_full(uid, bb_getpwuid(NULL, uid, 0), 'u');
+ putchar(' ');
+ /* bb_getgrgid doesn't exit on failure here */
+ status |= printf_full(gid, bb_getgrgid(NULL, gid, 0), '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);
+ if (is_selinux_enabled()) {
+ security_context_t mysid;
+ char context[80];
+ int len = sizeof(context);
+
+ getcon(&mysid);
+ context[0] = '\0';
+ if (mysid) {
+ len = strlen(mysid)+1;
+ safe_strncpy(context, mysid, len);
+ freecon(mysid);
+ } else {
+ safe_strncpy(context, "unknown", 8);
+ }
+ 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:
-*/
+ putchar('\n');
+ fflush_stdout_and_exit(status);
+}
projects / oweals / busybox.git / blobdiff