496 lines
11 KiB
C
496 lines
11 KiB
C
/* $NetBSD: gen_subs.c,v 1.8 1997/07/30 05:04:23 thorpej Exp $ */
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/*-
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* Copyright (c) 1992 Keith Muller.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Keith Muller of the University of California, San Diego.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: gen_subs.c,v 1.8 1997/07/30 05:04:23 thorpej Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <tzfile.h>
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#include <utmp.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include "pax.h"
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#include "extern.h"
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/*
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* a collection of general purpose subroutines used by pax
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*/
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/*
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* constants used by ls_list() when printing out archive members
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*/
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#define MODELEN 20
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#define DATELEN 64
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#define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY)
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#define CURFRMT "%b %e %H:%M"
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#define OLDFRMT "%b %e %Y"
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#ifndef UT_NAMESIZE
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#define UT_NAMESIZE 8
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#endif
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#define UT_GRPSIZE 6
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/*
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* ls_list()
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* list the members of an archive in ls format
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*/
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#if __STDC__
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void
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ls_list(ARCHD *arcn, time_t now)
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#else
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void
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ls_list(arcn, now)
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ARCHD *arcn;
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time_t now;
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#endif
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{
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struct stat *sbp;
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char f_mode[MODELEN];
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char f_date[DATELEN];
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char *timefrmt;
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/*
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* if not verbose, just print the file name
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*/
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if (!vflag) {
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(void)printf("%s\n", arcn->name);
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(void)fflush(stdout);
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return;
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}
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/*
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* user wants long mode
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*/
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sbp = &(arcn->sb);
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strmode(sbp->st_mode, f_mode);
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if (ltmfrmt == NULL) {
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/*
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* no locale specified format. time format based on age
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* compared to the time pax was started.
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*/
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if ((sbp->st_mtime + SIXMONTHS) <= now)
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timefrmt = OLDFRMT;
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else
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timefrmt = CURFRMT;
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} else
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timefrmt = ltmfrmt;
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/*
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* print file mode, link count, uid, gid and time
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*/
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if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0)
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f_date[0] = '\0';
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(void)printf("%s%2u %-*s %-*s ", f_mode, sbp->st_nlink, UT_NAMESIZE,
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name_uid(sbp->st_uid, 1), UT_GRPSIZE,
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name_gid(sbp->st_gid, 1));
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/*
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* print device id's for devices, or sizes for other nodes
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*/
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if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK))
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# ifdef NET2_STAT
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(void)printf("%4u,%4u ", MAJOR(sbp->st_rdev),
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MINOR(sbp->st_rdev));
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# else
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(void)printf("%4lu,%4lu ", (long) MAJOR(sbp->st_rdev),
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(long) MINOR(sbp->st_rdev));
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# endif
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else {
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# ifdef NET2_STAT
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(void)printf("%9lu ", sbp->st_size);
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# else
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(void)printf("%9qu ", (long long)sbp->st_size);
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# endif
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}
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/*
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* print name and link info for hard and soft links
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*/
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(void)printf("%s %s", f_date, arcn->name);
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if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG))
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(void)printf(" == %s\n", arcn->ln_name);
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else if (arcn->type == PAX_SLK)
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(void)printf(" => %s\n", arcn->ln_name);
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else
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(void)putchar('\n');
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(void)fflush(stdout);
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return;
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}
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/*
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* tty_ls()
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* print a short summary of file to tty.
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*/
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#if __STDC__
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void
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ls_tty(ARCHD *arcn)
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#else
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void
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ls_tty(arcn)
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ARCHD *arcn;
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#endif
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{
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char f_date[DATELEN];
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char f_mode[MODELEN];
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char *timefrmt;
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if (ltmfrmt == NULL) {
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/*
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* no locale specified format
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*/
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if ((arcn->sb.st_mtime + SIXMONTHS) <= time((time_t *)NULL))
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timefrmt = OLDFRMT;
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else
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timefrmt = CURFRMT;
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} else
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timefrmt = ltmfrmt;
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/*
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* convert time to string, and print
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*/
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if (strftime(f_date, DATELEN, timefrmt,
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localtime(&(arcn->sb.st_mtime))) == 0)
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f_date[0] = '\0';
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strmode(arcn->sb.st_mode, f_mode);
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tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name);
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return;
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}
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/*
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* zf_strncpy()
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* copy src to dest up to len chars (stopping at first '\0'), when src is
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* shorter than len, pads to len with '\0'. big performance win (and
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* a lot easier to code) over strncpy(), then a strlen() then a
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* memset(). (or doing the memset() first).
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*/
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#if __STDC__
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void
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zf_strncpy(char *dest, char *src, int len)
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#else
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void
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zf_strncpy(dest, src, len)
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char *dest;
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char *src;
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int len;
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#endif
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{
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char *stop;
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stop = dest + len;
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while ((dest < stop) && (*src != '\0'))
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*dest++ = *src++;
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while (dest < stop)
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*dest++ = '\0';
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return;
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}
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/*
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* l_strncpy()
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* copy src to dest up to len chars (stopping at first '\0')
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* Return:
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* number of chars copied. (Note this is a real performance win over
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* doing a strncpy() then a strlen()
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*/
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#if __STDC__
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int
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l_strncpy(char *dest, char *src, int len)
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#else
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int
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l_strncpy(dest, src, len)
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char *dest;
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char *src;
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int len;
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#endif
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{
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char *stop;
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char *start;
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stop = dest + len;
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start = dest;
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while ((dest < stop) && (*src != '\0'))
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*dest++ = *src++;
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if (dest < stop)
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*dest = '\0';
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return(dest - start);
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}
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/*
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* asc_ul()
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* convert hex/octal character string into a u_long. We do not have to
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* check for overflow! (the headers in all supported formats are not large
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* enough to create an overflow).
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* NOTE: strings passed to us are NOT TERMINATED.
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* Return:
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* unsigned long value
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*/
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#if __STDC__
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u_long
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asc_ul(char *str, int len, int base)
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#else
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u_long
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asc_ul(str, len, base)
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char *str;
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int len;
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int base;
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#endif
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{
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char *stop;
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u_long tval = 0;
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stop = str + len;
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/*
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* skip over leading blanks and zeros
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*/
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while ((str < stop) && ((*str == ' ') || (*str == '0')))
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++str;
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/*
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* for each valid digit, shift running value (tval) over to next digit
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* and add next digit
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*/
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if (base == HEX) {
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while (str < stop) {
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if ((*str >= '0') && (*str <= '9'))
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tval = (tval << 4) + (*str++ - '0');
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else if ((*str >= 'A') && (*str <= 'F'))
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tval = (tval << 4) + 10 + (*str++ - 'A');
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else if ((*str >= 'a') && (*str <= 'f'))
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tval = (tval << 4) + 10 + (*str++ - 'a');
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else
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break;
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}
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} else {
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while ((str < stop) && (*str >= '0') && (*str <= '7'))
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tval = (tval << 3) + (*str++ - '0');
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}
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return(tval);
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}
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/*
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* ul_asc()
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* convert an unsigned long into an hex/oct ascii string. pads with LEADING
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* ascii 0's to fill string completely
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* NOTE: the string created is NOT TERMINATED.
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*/
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#if __STDC__
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int
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ul_asc(u_long val, char *str, int len, int base)
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#else
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int
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ul_asc(val, str, len, base)
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u_long val;
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char *str;
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int len;
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int base;
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#endif
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{
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char *pt;
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u_long digit;
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/*
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* WARNING str is not '\0' terminated by this routine
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*/
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pt = str + len - 1;
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/*
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* do a tailwise conversion (start at right most end of string to place
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* least significant digit). Keep shifting until conversion value goes
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* to zero (all digits were converted)
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*/
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if (base == HEX) {
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while (pt >= str) {
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if ((digit = (val & 0xf)) < 10)
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*pt-- = '0' + (char)digit;
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else
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*pt-- = 'a' + (char)(digit - 10);
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if ((val = (val >> 4)) == (u_long)0)
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break;
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}
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} else {
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while (pt >= str) {
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*pt-- = '0' + (char)(val & 0x7);
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if ((val = (val >> 3)) == (u_long)0)
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break;
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}
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}
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/*
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* pad with leading ascii ZEROS. We return -1 if we ran out of space.
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*/
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while (pt >= str)
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*pt-- = '0';
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if (val != (u_long)0)
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return(-1);
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return(0);
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}
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#ifndef NET2_STAT
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/*
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* asc_uqd()
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* convert hex/octal character string into a u_quad_t. We do not have to
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* check for overflow! (the headers in all supported formats are not large
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* enough to create an overflow).
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* NOTE: strings passed to us are NOT TERMINATED.
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* Return:
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* u_quad_t value
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*/
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#if __STDC__
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u_quad_t
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asc_uqd(char *str, int len, int base)
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#else
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u_quad_t
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asc_uqd(str, len, base)
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char *str;
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int len;
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int base;
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#endif
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{
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char *stop;
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u_quad_t tval = 0;
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stop = str + len;
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/*
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* skip over leading blanks and zeros
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*/
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while ((str < stop) && ((*str == ' ') || (*str == '0')))
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++str;
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/*
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* for each valid digit, shift running value (tval) over to next digit
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* and add next digit
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*/
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if (base == HEX) {
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while (str < stop) {
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if ((*str >= '0') && (*str <= '9'))
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tval = (tval << 4) + (*str++ - '0');
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else if ((*str >= 'A') && (*str <= 'F'))
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tval = (tval << 4) + 10 + (*str++ - 'A');
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else if ((*str >= 'a') && (*str <= 'f'))
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tval = (tval << 4) + 10 + (*str++ - 'a');
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else
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break;
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}
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} else {
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while ((str < stop) && (*str >= '0') && (*str <= '7'))
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tval = (tval << 3) + (*str++ - '0');
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}
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return(tval);
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}
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/*
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* uqd_asc()
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* convert an u_quad_t into a hex/oct ascii string. pads with LEADING
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* ascii 0's to fill string completely
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* NOTE: the string created is NOT TERMINATED.
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*/
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#if __STDC__
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int
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uqd_asc(u_quad_t val, char *str, int len, int base)
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#else
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int
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uqd_asc(val, str, len, base)
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u_quad_t val;
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char *str;
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int len;
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int base;
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#endif
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{
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char *pt;
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u_quad_t digit;
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/*
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* WARNING str is not '\0' terminated by this routine
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*/
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pt = str + len - 1;
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/*
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* do a tailwise conversion (start at right most end of string to place
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* least significant digit). Keep shifting until conversion value goes
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* to zero (all digits were converted)
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*/
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if (base == HEX) {
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while (pt >= str) {
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if ((digit = (val & 0xf)) < 10)
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*pt-- = '0' + (char)digit;
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else
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*pt-- = 'a' + (char)(digit - 10);
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if ((val = (val >> 4)) == (u_quad_t)0)
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break;
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}
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} else {
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while (pt >= str) {
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*pt-- = '0' + (char)(val & 0x7);
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if ((val = (val >> 3)) == (u_quad_t)0)
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break;
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}
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}
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/*
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* pad with leading ascii ZEROS. We return -1 if we ran out of space.
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*/
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while (pt >= str)
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*pt-- = '0';
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if (val != (u_quad_t)0)
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return(-1);
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return(0);
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}
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#endif
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