1/*	$OpenBSD: ls.c,v 1.18 2019/02/05 02:17:32 deraadt Exp $	*/
2
3/*
4 * Copyright (c) 1989, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/stat.h>
33
34#include <err.h>
35#include <errno.h>
36#include <stdio.h>
37#include <string.h>
38#include <time.h>
39#include <unistd.h>
40#include <limits.h>
41#include <utmp.h>
42#include <pwd.h>
43#include <grp.h>
44#include <fts.h>
45#include "find.h"
46#include "extern.h"
47
48/* Derived from the print routines in the ls(1) source code. */
49
50static void printlink(char *);
51static void printtime(time_t);
52
53#define NAME_WIDTH	8
54#define	DATELEN		64
55
56void
57printlong(char *name, char *accpath, struct stat *sb)
58{
59	char modep[15];
60
61	(void)printf("%6llu %4lld ", (unsigned long long)sb->st_ino,
62	    (long long)sb->st_blocks);
63	(void)strmode(sb->st_mode, modep);
64	(void)printf("%s %3u %-*.*s %-*.*s ", modep, sb->st_nlink,
65	    NAME_WIDTH, UT_NAMESIZE, user_from_uid(sb->st_uid, 0),
66	    NAME_WIDTH, UT_NAMESIZE, group_from_gid(sb->st_gid, 0));
67
68	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
69		(void)printf("%3u, %3u ", major(sb->st_rdev),
70		    minor(sb->st_rdev));
71	else
72		(void)printf("%8lld ", (long long)sb->st_size);
73	printtime(sb->st_mtime);
74	(void)printf("%s", name);
75	if (S_ISLNK(sb->st_mode))
76		printlink(accpath);
77	(void)putchar('\n');
78}
79
80static void
81printtime(time_t ftime)
82{
83	char f_date[DATELEN];
84	static time_t now;
85	static int now_set = 0;
86
87	if (! now_set) {
88		now = time(NULL);
89		now_set = 1;
90	}
91
92	/*
93	 * convert time to string, and print
94	 */
95	if (strftime(f_date, sizeof(f_date),
96	    (ftime + SIXMONTHS <= now || ftime > now) ? "%b %e  %Y" :
97	    "%b %e %H:%M", localtime(&ftime)) == 0)
98		f_date[0] = '\0';
99
100	printf("%s ", f_date);
101}
102
103static void
104printlink(char *name)
105{
106	int lnklen;
107	char path[PATH_MAX];
108
109	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
110		warn("%s", name);
111		return;
112	}
113	path[lnklen] = '\0';
114	(void)printf(" -> %s", path);
115}
116