path: root/usr.bin/find/ls.c

/*	$NetBSD: ls.c,v 1.21 2011/08/31 16:24:57 plunky Exp $	*/

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */


#include <sys/param.h>
#include <sys/stat.h>

#include <err.h>
#include <errno.h>
#include <fts.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <bsd/string.h>
#include <time.h>
#include <unistd.h>

#include "find.h"

/* Derived from the print routines in the ls(1) source code. */

static void printlink(char *);
static void printtime(time_t);

void
printlong(char *name,			/* filename to print */
	char *accpath,			/* current valid path to filename */
	struct stat *sb)		/* stat buffer */
{
	char modep[15];
	struct passwd *user = getpwuid(sb->st_uid);
	struct group *group = getgrgid(sb->st_gid);
	char *username, *groupname;

	if (user == NULL) {
		username = malloc(21);
		snprintf(username, 20, "%d", sb->st_uid);
	} else {
		username = user->pw_name;
	}
	if (group == NULL) {
		groupname = malloc(21);
		snprintf(groupname, 20, "%d", sb->st_gid);
	} else {
		groupname = group->gr_name;
	}

	(void)printf("%7lu %6lld ", (u_long)sb->st_ino,
	    (long long)sb->st_blocks);
	(void)strmode(sb->st_mode, modep);
	(void)printf("%s %3lu %-*s %-*s ", modep, (unsigned long)sb->st_nlink,
	    LOGIN_NAME_MAX, username, LOGIN_NAME_MAX, groupname);

	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
		(void)printf("%3llu,%5llu ",
		    (unsigned long long)major(sb->st_rdev),
		    (unsigned long long)minor(sb->st_rdev));
	else
		(void)printf("%9lld ", (long long)sb->st_size);
	printtime(sb->st_mtime);
	(void)printf("%s", name);
	if (S_ISLNK(sb->st_mode))
		printlink(accpath);
	(void)putchar('\n');

	if (user == NULL) free(username);
	if (group == NULL) free(groupname);
}

static void
printtime(time_t ftime)
{
	int i;
	char *longstring;

	longstring = ctime(&ftime);
	for (i = 4; i < 11; ++i)
		(void)putchar(longstring[i]);
#define DAYSPERNYEAR 365
#define SECSPERDAY 24 * 60 * 60
#define	SIXMONTHS	((DAYSPERNYEAR / 2) * SECSPERDAY)
	if (ftime + SIXMONTHS > time(NULL))
		for (i = 11; i < 16; ++i)
			(void)putchar(longstring[i]);
	else {
		(void)putchar(' ');
		for (i = 20; i < 24; ++i)
			(void)putchar(longstring[i]);
	}
	(void)putchar(' ');
}

static void
printlink(char *name)
{
	int lnklen;
	char path[MAXPATHLEN + 1];

	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
		warn("%s", name);
		return;
	}
	path[lnklen] = '\0';
	(void)printf(" -> %s", path);
}