/*      $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/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "from: @(#)ls.c  8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: ls.c,v 1.21 2011/08/31 16:24:57 plunky Exp $");
#endif
#endif /* not lint */

#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 <time.h>
#include <tzfile.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];

        (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, user_from_uid(sb->st_uid, 0), LOGIN_NAME_MAX,
            group_from_gid(sb->st_gid, 0));

        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');
}

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

        longstring = ctime(&ftime);
        for (i = 4; i < 11; ++i)
                (void)putchar(longstring[i]);

#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);
}