/*      $OpenBSD: ls.c,v 1.18 2019/02/05 02:17:32 deraadt 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/stat.h>

#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <limits.h>
#include <utmp.h>
#include <pwd.h>
#include <grp.h>
#include <fts.h>
#include "find.h"
#include "extern.h"

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

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

#define NAME_WIDTH      8
#define DATELEN         64

void
printlong(char *name, char *accpath, struct stat *sb)
{
        char modep[15];

        (void)printf("%6llu %4lld ", (unsigned long long)sb->st_ino,
            (long long)sb->st_blocks);
        (void)strmode(sb->st_mode, modep);
        (void)printf("%s %3u %-*.*s %-*.*s ", modep, sb->st_nlink, 
            NAME_WIDTH, UT_NAMESIZE, user_from_uid(sb->st_uid, 0), 
            NAME_WIDTH, UT_NAMESIZE, group_from_gid(sb->st_gid, 0));

        if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
                (void)printf("%3u, %3u ", major(sb->st_rdev),
                    minor(sb->st_rdev));
        else
                (void)printf("%8lld ", (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)
{
        char f_date[DATELEN];
        static time_t now;
        static int now_set = 0;

        if (! now_set) {
                now = time(NULL);
                now_set = 1;
        }

        /*
         * convert time to string, and print
         */
        if (strftime(f_date, sizeof(f_date),
            (ftime + SIXMONTHS <= now || ftime > now) ? "%b %e  %Y" :
            "%b %e %H:%M", localtime(&ftime)) == 0)
                f_date[0] = '\0';

        printf("%s ", f_date);
}

static void
printlink(char *name)
{
        int lnklen;
        char path[PATH_MAX];

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