Beispiel #1
0
extern int id_main(int argc, char **argv)
{
	struct passwd *p;
	uid_t uid;
	gid_t gid;
	unsigned long flags;
	short status;
#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 & BB_GETOPT_ERROR)
	/* Don't allow -n -r -nr */
	|| (flags <= 3 && flags > 0) 
	/* Don't allow more than one username */
	|| (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]);
		/* my_getpwnam is needed because it exits on failure */
		uid = my_getpwnam(argv[optind]);
		gid = p->pw_gid;
		/* in this case PRINT_REAL is the same */ 
	}

	if(flags & (JUST_GROUP | JUST_USER)) {
		/* JUST_GROUP and JUST_USER are mutually exclusive */
		if(flags & NAME_NOT_NUMBER) {
			/* my_getpwuid and my_getgrgid exit on failure so puts cannot segfault */
			puts((flags & JUST_USER) ? my_getpwuid(NULL, uid, -1 ) : my_getgrgid(NULL, gid, -1 ));
		} else {
			bb_printf("%u\n",(flags & JUST_USER) ? uid : gid);
		}
		/* exit */ 
		bb_fflush_stdout_and_exit(EXIT_SUCCESS);
	}

	/* Print full info like GNU id */
	/* my_getpwuid doesn't exit on failure here */
	status=printf_full(uid, my_getpwuid(NULL, uid, 0), 'u');
	putchar(' ');
	/* my_getgrgid doesn't exit on failure here */
	status|=printf_full(gid, my_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");
		bb_printf(" context=%s", context);
	}
#endif
	putchar('\n');
	bb_fflush_stdout_and_exit(status);
}
extern int id_main(int argc, char **argv)
{
	char user[9], group[9];
	long pwnam, grnam;
	int uid, gid;
	int flags;
#ifdef CONFIG_SELINUX
	int is_flask_enabled_flag = is_flask_enabled();
#endif

	flags = bb_getopt_ulflags(argc, argv, "ugrn");

	if (((flags & (JUST_USER | JUST_GROUP)) == (JUST_USER | JUST_GROUP))
		|| (argc > optind + 1)
	) {
		bb_show_usage();
	}

	if (argv[optind] == NULL) {
		if (flags & PRINT_REAL) {
			uid = getuid();
			gid = getgid();
		} else {
			uid = geteuid();
			gid = getegid();
		}
		my_getpwuid(user, uid);
	} else {
		safe_strncpy(user, argv[optind], sizeof(user));
	    gid = my_getpwnamegid(user);
	}
	my_getgrgid(group, gid);

	pwnam=my_getpwnam(user);
	grnam=my_getgrnam(group);

	if (flags & (JUST_GROUP | JUST_USER)) {
		char *s = group;
		if (flags & JUST_USER) {
			s = user;
			grnam = pwnam;
		}
		if (flags & NAME_NOT_NUMBER) {
			puts(s);
		} else {
			printf("%ld\n", grnam);
		}
	} else {
#ifdef CONFIG_SELINUX
		printf("uid=%ld(%s) gid=%ld(%s)", pwnam, user, grnam, group);
		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\n", context);
		}
		else
			printf("\n");
#else
		printf("uid=%ld(%s) gid=%ld(%s)\n", pwnam, user, grnam, group);
#endif

	}

	bb_fflush_stdout_and_exit(0);
}