/*      $NetBSD: tls.c,v 1.6 2011/05/20 02:12:39 christos Exp $ */

/*
 * Copyright (c) 1995 Gordon W. Ross
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/types.h>
#include <sys/param.h>
#include <sys/stat.h>

#include <dirent.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <unistd.h>

static int iflag;

static void show_long(const char *);

int
main(int argc, char *argv[])
{
        DIR *dfp;
        struct dirent *d;

        /* If given an arg, just cd there first. */
        if (argc > 1) {
                if (chdir(argv[1]))
                        err(1, "chdir `%s'", argv[1]);
        }
        if (argc > 2)
                fprintf(stderr, "extra args ignored\n");

        dfp = opendir(".");
        if (dfp == NULL)
                err(EXIT_FAILURE, "opendir");

        while ((d = readdir(dfp)) != NULL)
                show_long(d->d_name);

        closedir(dfp);
        return EXIT_SUCCESS;
}

/* XXX - This is system dependent... */
static const char ifmt_name[16] = {
        '?',    /* 0: nothing */
        'P',    /* 1: fifo (pipe) */
        'C',    /* 2: chr device */
        '?',    /* 3: ? */
        'D',    /* 4: dir */
        '?',    /* 5: ? */
        'B',    /* 6: blk device */
        '?',    /* 7: ? */
        'F',    /* 8: file */
        '?',    /* 9: ? */
        'L',    /* A: link */
        '?',    /* B: ? */
        'S',    /* C: socket */
        '?',    /* D: ? */
        'W',    /* E: whiteout */
        '?'     /* F: ? */
};

static void
show_long(const char *fname)
{
        struct stat st;
        int ifmt;
        char ifmt_c;
        char *date;

        if (lstat(fname, &st)) {
                warn("lstat `%s'", fname);
                return;
        }
        ifmt = (st.st_mode >> 12) & 15;
        ifmt_c = ifmt_name[ifmt];

        if (iflag) {
                /* inode number */
                printf("%6d ",  (int)st.st_ino);        /* assume small fs */
        }

        /* fmt/mode */
        printf("%c:",   ifmt_c);
        printf("%04o ", st.st_mode & 07777);

        /* nlinks, uid, gid */
        printf("%2d ",   st.st_nlink);
        printf("%4d ",  st.st_uid);
        printf("%4d ",  st.st_gid);

        /* size or major/minor */
        if ((ifmt_c == 'B') || (ifmt_c == 'C')) {
                printf("%2d, ", major(st.st_rdev));
                printf("%3d ",  minor(st.st_rdev));
        } else {
                printf("%7d ",  (int) st.st_size);
        }

        /* date */
        if ((date = ctime(&st.st_mtime)) == NULL)
                printf("? ");
        else {
                date += 4;      /* skip day-of-week */
                date[12] = '\0';        /* to the minute */
                printf("%s ", date);
        }

        /* name */
        printf("%s", fname);

        if (ifmt_c == 'L') {
                char linkto[MAXPATHLEN];
                int n;

                n = readlink(fname, linkto, sizeof(linkto)-1);
                if (n < 0) {
                        warn("readlink `%s'", fname);
                        return;
                }
                linkto[n] = '\0';
                printf(" -> %s", linkto);
        }
        printf("\n");
}