NetBSD/bin/pax/gen_subs.c

505 lines
11 KiB
C

/* $NetBSD: gen_subs.c,v 1.20 2001/01/04 15:39:51 lukem Exp $ */
/*-
* Copyright (c) 1992 Keith Muller.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Keith Muller of the University of California, San Diego.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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[] = "@(#)gen_subs.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: gen_subs.c,v 1.20 2001/01/04 15:39:51 lukem Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <ctype.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 <utmp.h>
#include "pax.h"
#include "extern.h"
/*
* a collection of general purpose subroutines used by pax
*/
/*
* constants used by ls_list() when printing out archive members
*/
#define MODELEN 20
#define DATELEN 64
#define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY)
#define CURFRMT "%b %e %H:%M"
#define OLDFRMT "%b %e %Y"
#ifndef UT_NAMESIZE
#define UT_NAMESIZE 8
#endif
#define UT_GRPSIZE 6
/*
* ls_list()
* list the members of an archive in ls format
*/
#if __STDC__
void
ls_list(ARCHD *arcn, time_t now)
#else
void
ls_list(arcn, now)
ARCHD *arcn;
time_t now;
#endif
{
struct stat *sbp;
char f_mode[MODELEN];
char f_date[DATELEN];
const char *timefrmt, *user, *group;
/*
* if not verbose, just print the file name
*/
if (!vflag) {
(void)printf("%s\n", arcn->name);
(void)fflush(stdout);
return;
}
/*
* user wants long mode
*/
sbp = &(arcn->sb);
strmode(sbp->st_mode, f_mode);
/*
* time format based on age compared to the time pax was started.
*/
if ((sbp->st_mtime + SIXMONTHS) <= now)
timefrmt = OLDFRMT;
else
timefrmt = CURFRMT;
/*
* print file mode, link count, uid, gid and time
*/
if (strftime(f_date,DATELEN,timefrmt,localtime(&(sbp->st_mtime))) == 0)
f_date[0] = '\0';
user = user_from_uid(sbp->st_uid, 0);
group = group_from_gid(sbp->st_gid, 0);
(void)printf("%s%2lu %-*s %-*s ", f_mode, (unsigned long)sbp->st_nlink,
UT_NAMESIZE, user ? user : "", UT_GRPSIZE, group ? group : "");
/*
* print device id's for devices, or sizes for other nodes
*/
if ((arcn->type == PAX_CHR) || (arcn->type == PAX_BLK))
# ifdef NET2_STAT
(void)printf("%4u,%4u ", MAJOR(sbp->st_rdev),
MINOR(sbp->st_rdev));
# else
(void)printf("%4lu,%4lu ", (long) MAJOR(sbp->st_rdev),
(long) MINOR(sbp->st_rdev));
# endif
else {
# ifdef NET2_STAT
(void)printf("%9lu ", sbp->st_size);
# else
(void)printf("%9llu ", (long long)sbp->st_size);
# endif
}
/*
* print name and link info for hard and soft links
*/
(void)printf("%s %s", f_date, arcn->name);
if ((arcn->type == PAX_HLK) || (arcn->type == PAX_HRG))
(void)printf(" == %s\n", arcn->ln_name);
else if (arcn->type == PAX_SLK)
(void)printf(" => %s\n", arcn->ln_name);
else
(void)putchar('\n');
(void)fflush(stdout);
return;
}
/*
* tty_ls()
* print a short summary of file to tty.
*/
#if __STDC__
void
ls_tty(ARCHD *arcn)
#else
void
ls_tty(arcn)
ARCHD *arcn;
#endif
{
char f_date[DATELEN];
char f_mode[MODELEN];
const char *timefrmt;
if ((arcn->sb.st_mtime + SIXMONTHS) <= time((time_t *)NULL))
timefrmt = OLDFRMT;
else
timefrmt = CURFRMT;
/*
* convert time to string, and print
*/
if (strftime(f_date, DATELEN, timefrmt,
localtime(&(arcn->sb.st_mtime))) == 0)
f_date[0] = '\0';
strmode(arcn->sb.st_mode, f_mode);
tty_prnt("%s%s %s\n", f_mode, f_date, arcn->name);
return;
}
/*
* zf_strncpy()
* copy src to dest up to len chars (stopping at first '\0'), when src is
* shorter than len, pads to len with '\0'. big performance win (and
* a lot easier to code) over strncpy(), then a strlen() then a
* memset(). (or doing the memset() first).
*/
#if __STDC__
void
zf_strncpy(char *dest, const char *src, int len)
#else
void
zf_strncpy(dest, src, len)
char *dest;
char *src;
int len;
#endif
{
char *stop;
stop = dest + len;
while ((dest < stop) && (*src != '\0'))
*dest++ = *src++;
while (dest < stop)
*dest++ = '\0';
return;
}
/*
* l_strncpy()
* copy src to dest up to len chars (stopping at first '\0')
* Return:
* number of chars copied. (Note this is a real performance win over
* doing a strncpy() then a strlen()
*/
#if __STDC__
int
l_strncpy(char *dest, const char *src, int len)
#else
int
l_strncpy(dest, src, len)
char *dest;
char *src;
int len;
#endif
{
char *stop;
char *start;
stop = dest + len;
start = dest;
while ((dest < stop) && (*src != '\0'))
*dest++ = *src++;
if (dest < stop)
*dest = '\0';
return(dest - start);
}
/*
* asc_ul()
* convert hex/octal character string into a u_long. We do not have to
* check for overflow! (the headers in all supported formats are not large
* enough to create an overflow).
* NOTE: strings passed to us are NOT TERMINATED.
* Return:
* unsigned long value
*/
#if __STDC__
u_long
asc_ul(char *str, int len, int base)
#else
u_long
asc_ul(str, len, base)
char *str;
int len;
int base;
#endif
{
char *stop;
u_long tval = 0;
stop = str + len;
/*
* skip over leading blanks and zeros
*/
while ((str < stop) && ((*str == ' ') || (*str == '0')))
++str;
/*
* for each valid digit, shift running value (tval) over to next digit
* and add next digit
*/
if (base == HEX) {
while (str < stop) {
if ((*str >= '0') && (*str <= '9'))
tval = (tval << 4) + (*str++ - '0');
else if ((*str >= 'A') && (*str <= 'F'))
tval = (tval << 4) + 10 + (*str++ - 'A');
else if ((*str >= 'a') && (*str <= 'f'))
tval = (tval << 4) + 10 + (*str++ - 'a');
else
break;
}
} else {
while ((str < stop) && (*str >= '0') && (*str <= '7'))
tval = (tval << 3) + (*str++ - '0');
}
return(tval);
}
/*
* ul_asc()
* convert an unsigned long into an hex/oct ascii string. pads with LEADING
* ascii 0's to fill string completely
* NOTE: the string created is NOT TERMINATED.
*/
#if __STDC__
int
ul_asc(u_long val, char *str, int len, int base)
#else
int
ul_asc(val, str, len, base)
u_long val;
char *str;
int len;
int base;
#endif
{
char *pt;
u_long digit;
/*
* WARNING str is not '\0' terminated by this routine
*/
pt = str + len - 1;
/*
* do a tailwise conversion (start at right most end of string to place
* least significant digit). Keep shifting until conversion value goes
* to zero (all digits were converted)
*/
if (base == HEX) {
while (pt >= str) {
if ((digit = (val & 0xf)) < 10)
*pt-- = '0' + (char)digit;
else
*pt-- = 'a' + (char)(digit - 10);
if ((val = (val >> 4)) == (u_long)0)
break;
}
} else {
while (pt >= str) {
*pt-- = '0' + (char)(val & 0x7);
if ((val = (val >> 3)) == (u_long)0)
break;
}
}
/*
* pad with leading ascii ZEROS. We return -1 if we ran out of space.
*/
while (pt >= str)
*pt-- = '0';
if (val != (u_long)0)
return(-1);
return(0);
}
#ifndef NET2_STAT
/*
* asc_uqd()
* convert hex/octal character string into a u_quad_t. We do not have to
* check for overflow! (the headers in all supported formats are not large
* enough to create an overflow).
* NOTE: strings passed to us are NOT TERMINATED.
* Return:
* u_quad_t value
*/
#if __STDC__
u_quad_t
asc_uqd(char *str, int len, int base)
#else
u_quad_t
asc_uqd(str, len, base)
char *str;
int len;
int base;
#endif
{
char *stop;
u_quad_t tval = 0;
stop = str + len;
/*
* skip over leading blanks and zeros
*/
while ((str < stop) && ((*str == ' ') || (*str == '0')))
++str;
/*
* for each valid digit, shift running value (tval) over to next digit
* and add next digit
*/
if (base == HEX) {
while (str < stop) {
if ((*str >= '0') && (*str <= '9'))
tval = (tval << 4) + (*str++ - '0');
else if ((*str >= 'A') && (*str <= 'F'))
tval = (tval << 4) + 10 + (*str++ - 'A');
else if ((*str >= 'a') && (*str <= 'f'))
tval = (tval << 4) + 10 + (*str++ - 'a');
else
break;
}
} else {
while ((str < stop) && (*str >= '0') && (*str <= '7'))
tval = (tval << 3) + (*str++ - '0');
}
return(tval);
}
/*
* uqd_asc()
* convert an u_quad_t into a hex/oct ascii string. pads with LEADING
* ascii 0's to fill string completely
* NOTE: the string created is NOT TERMINATED.
*/
#if __STDC__
int
uqd_asc(u_quad_t val, char *str, int len, int base)
#else
int
uqd_asc(val, str, len, base)
u_quad_t val;
char *str;
int len;
int base;
#endif
{
char *pt;
u_quad_t digit;
/*
* WARNING str is not '\0' terminated by this routine
*/
pt = str + len - 1;
/*
* do a tailwise conversion (start at right most end of string to place
* least significant digit). Keep shifting until conversion value goes
* to zero (all digits were converted)
*/
if (base == HEX) {
while (pt >= str) {
if ((digit = (val & 0xf)) < 10)
*pt-- = '0' + (char)digit;
else
*pt-- = 'a' + (char)(digit - 10);
if ((val = (val >> 4)) == (u_quad_t)0)
break;
}
} else {
while (pt >= str) {
*pt-- = '0' + (char)(val & 0x7);
if ((val = (val >> 3)) == (u_quad_t)0)
break;
}
}
/*
* pad with leading ascii ZEROS. We return -1 if we ran out of space.
*/
while (pt >= str)
*pt-- = '0';
if (val != (u_quad_t)0)
return(-1);
return(0);
}
#endif
int
check_Aflag(void)
{
if (Aflag > 0)
return 1;
if (Aflag == 0) {
Aflag = -1;
tty_warn(0, "Removing leading / from absolute path names in the archive");
}
return 0;
}