2316 lines
48 KiB
C
2316 lines
48 KiB
C
/* $NetBSD: gzip.c,v 1.112 2017/08/23 13:04:17 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997, 1998, 2003, 2004, 2006, 2008, 2009, 2010, 2011, 2015, 2017
|
|
* Matthew R. Green
|
|
* 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/cdefs.h>
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1997, 1998, 2003, 2004, 2006, 2008,\
|
|
2009, 2010, 2011, 2015, 2017 Matthew R. Green. All rights reserved.");
|
|
__FBSDID("$FreeBSD$");
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* gzip.c -- GPL free gzip using zlib.
|
|
*
|
|
* RFC 1950 covers the zlib format
|
|
* RFC 1951 covers the deflate format
|
|
* RFC 1952 covers the gzip format
|
|
*
|
|
* TODO:
|
|
* - use mmap where possible
|
|
* - make bzip2/compress -v/-t/-l support work as well as possible
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <inttypes.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <zlib.h>
|
|
#include <fts.h>
|
|
#include <libgen.h>
|
|
#include <stdarg.h>
|
|
#include <getopt.h>
|
|
#include <time.h>
|
|
|
|
/* what type of file are we dealing with */
|
|
enum filetype {
|
|
FT_GZIP,
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
FT_BZIP2,
|
|
#endif
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
FT_Z,
|
|
#endif
|
|
#ifndef NO_PACK_SUPPORT
|
|
FT_PACK,
|
|
#endif
|
|
#ifndef NO_XZ_SUPPORT
|
|
FT_XZ,
|
|
#endif
|
|
FT_LAST,
|
|
FT_UNKNOWN
|
|
};
|
|
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
#include <bzlib.h>
|
|
|
|
#define BZ2_SUFFIX ".bz2"
|
|
#define BZIP2_MAGIC "BZh"
|
|
#endif
|
|
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
#define Z_SUFFIX ".Z"
|
|
#define Z_MAGIC "\037\235"
|
|
#endif
|
|
|
|
#ifndef NO_PACK_SUPPORT
|
|
#define PACK_MAGIC "\037\036"
|
|
#endif
|
|
|
|
#ifndef NO_XZ_SUPPORT
|
|
#include <lzma.h>
|
|
#define XZ_SUFFIX ".xz"
|
|
#define XZ_MAGIC "\3757zXZ"
|
|
#endif
|
|
|
|
#define GZ_SUFFIX ".gz"
|
|
|
|
#define BUFLEN (64 * 1024)
|
|
|
|
#define GZIP_MAGIC0 0x1F
|
|
#define GZIP_MAGIC1 0x8B
|
|
#define GZIP_OMAGIC1 0x9E
|
|
|
|
#define GZIP_TIMESTAMP (off_t)4
|
|
#define GZIP_ORIGNAME (off_t)10
|
|
|
|
#define HEAD_CRC 0x02
|
|
#define EXTRA_FIELD 0x04
|
|
#define ORIG_NAME 0x08
|
|
#define COMMENT 0x10
|
|
|
|
#define OS_CODE 3 /* Unix */
|
|
|
|
typedef struct {
|
|
const char *zipped;
|
|
int ziplen;
|
|
const char *normal; /* for unzip - must not be longer than zipped */
|
|
} suffixes_t;
|
|
static suffixes_t suffixes[] = {
|
|
#define SUFFIX(Z, N) {Z, sizeof Z - 1, N}
|
|
SUFFIX(GZ_SUFFIX, ""), /* Overwritten by -S .xxx */
|
|
#ifndef SMALL
|
|
SUFFIX(GZ_SUFFIX, ""),
|
|
SUFFIX(".z", ""),
|
|
SUFFIX("-gz", ""),
|
|
SUFFIX("-z", ""),
|
|
SUFFIX("_z", ""),
|
|
SUFFIX(".taz", ".tar"),
|
|
SUFFIX(".tgz", ".tar"),
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
SUFFIX(BZ2_SUFFIX, ""),
|
|
SUFFIX(".tbz", ".tar"),
|
|
SUFFIX(".tbz2", ".tar"),
|
|
#endif
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
SUFFIX(Z_SUFFIX, ""),
|
|
#endif
|
|
#ifndef NO_XZ_SUPPORT
|
|
SUFFIX(XZ_SUFFIX, ""),
|
|
#endif
|
|
SUFFIX(GZ_SUFFIX, ""), /* Overwritten by -S "" */
|
|
#endif /* SMALL */
|
|
#undef SUFFIX
|
|
};
|
|
#define NUM_SUFFIXES (nitems(suffixes))
|
|
#define SUFFIX_MAXLEN 30
|
|
|
|
static const char gzip_version[] = "FreeBSD gzip 20171121";
|
|
|
|
#ifndef SMALL
|
|
static const char gzip_copyright[] = \
|
|
" Copyright (c) 1997, 1998, 2003, 2004, 2006 Matthew R. Green\n"
|
|
" All rights reserved.\n"
|
|
"\n"
|
|
" Redistribution and use in source and binary forms, with or without\n"
|
|
" modification, are permitted provided that the following conditions\n"
|
|
" are met:\n"
|
|
" 1. Redistributions of source code must retain the above copyright\n"
|
|
" notice, this list of conditions and the following disclaimer.\n"
|
|
" 2. Redistributions in binary form must reproduce the above copyright\n"
|
|
" notice, this list of conditions and the following disclaimer in the\n"
|
|
" documentation and/or other materials provided with the distribution.\n"
|
|
"\n"
|
|
" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n"
|
|
" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\n"
|
|
" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n"
|
|
" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,\n"
|
|
" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,\n"
|
|
" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n"
|
|
" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED\n"
|
|
" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,\n"
|
|
" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\n"
|
|
" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\n"
|
|
" SUCH DAMAGE.";
|
|
#endif
|
|
|
|
static int cflag; /* stdout mode */
|
|
static int dflag; /* decompress mode */
|
|
static int lflag; /* list mode */
|
|
static int numflag = 6; /* gzip -1..-9 value */
|
|
|
|
static const char *remove_file = NULL; /* file to be removed upon SIGINT */
|
|
|
|
static int fflag; /* force mode */
|
|
#ifndef SMALL
|
|
static int kflag; /* don't delete input files */
|
|
static int nflag; /* don't save name/timestamp */
|
|
static int Nflag; /* don't restore name/timestamp */
|
|
static int qflag; /* quiet mode */
|
|
static int rflag; /* recursive mode */
|
|
static int tflag; /* test */
|
|
static int vflag; /* verbose mode */
|
|
static sig_atomic_t print_info = 0;
|
|
#else
|
|
#define qflag 0
|
|
#define tflag 0
|
|
#endif
|
|
|
|
static int exit_value = 0; /* exit value */
|
|
|
|
static const char *infile; /* name of file coming in */
|
|
|
|
static void maybe_err(const char *fmt, ...) __printflike(1, 2) __dead2;
|
|
#if !defined(NO_BZIP2_SUPPORT) || !defined(NO_PACK_SUPPORT) || \
|
|
!defined(NO_XZ_SUPPORT)
|
|
static void maybe_errx(const char *fmt, ...) __printflike(1, 2) __dead2;
|
|
#endif
|
|
static void maybe_warn(const char *fmt, ...) __printflike(1, 2);
|
|
static void maybe_warnx(const char *fmt, ...) __printflike(1, 2);
|
|
static enum filetype file_gettype(u_char *);
|
|
#ifdef SMALL
|
|
#define gz_compress(if, of, sz, fn, tm) gz_compress(if, of, sz)
|
|
#endif
|
|
static off_t gz_compress(int, int, off_t *, const char *, uint32_t);
|
|
static off_t gz_uncompress(int, int, char *, size_t, off_t *, const char *);
|
|
static off_t file_compress(char *, char *, size_t);
|
|
static off_t file_uncompress(char *, char *, size_t);
|
|
static void handle_pathname(char *);
|
|
static void handle_file(char *, struct stat *);
|
|
static void handle_stdin(void);
|
|
static void handle_stdout(void);
|
|
static void print_ratio(off_t, off_t, FILE *);
|
|
static void print_list(int fd, off_t, const char *, time_t);
|
|
static void usage(void) __dead2;
|
|
static void display_version(void) __dead2;
|
|
#ifndef SMALL
|
|
static void display_license(void);
|
|
#endif
|
|
static const suffixes_t *check_suffix(char *, int);
|
|
static ssize_t read_retry(int, void *, size_t);
|
|
static ssize_t write_retry(int, const void *, size_t);
|
|
|
|
#ifdef SMALL
|
|
#define infile_set(f,t) infile_set(f)
|
|
#endif
|
|
static void infile_set(const char *newinfile, off_t total);
|
|
|
|
#ifdef SMALL
|
|
#define unlink_input(f, sb) unlink(f)
|
|
#define check_siginfo() /* nothing */
|
|
#define setup_signals() /* nothing */
|
|
#define infile_newdata(t) /* nothing */
|
|
#else
|
|
static off_t infile_total; /* total expected to read/write */
|
|
static off_t infile_current; /* current read/write */
|
|
|
|
static void check_siginfo(void);
|
|
static off_t cat_fd(unsigned char *, size_t, off_t *, int fd);
|
|
static void prepend_gzip(char *, int *, char ***);
|
|
static void handle_dir(char *);
|
|
static void print_verbage(const char *, const char *, off_t, off_t);
|
|
static void print_test(const char *, int);
|
|
static void copymodes(int fd, const struct stat *, const char *file);
|
|
static int check_outfile(const char *outfile);
|
|
static void setup_signals(void);
|
|
static void infile_newdata(size_t newdata);
|
|
static void infile_clear(void);
|
|
#endif
|
|
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
static off_t unbzip2(int, int, char *, size_t, off_t *);
|
|
#endif
|
|
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
static FILE *zdopen(int);
|
|
static off_t zuncompress(FILE *, FILE *, char *, size_t, off_t *);
|
|
#endif
|
|
|
|
#ifndef NO_PACK_SUPPORT
|
|
static off_t unpack(int, int, char *, size_t, off_t *);
|
|
#endif
|
|
|
|
#ifndef NO_XZ_SUPPORT
|
|
static off_t unxz(int, int, char *, size_t, off_t *);
|
|
#endif
|
|
|
|
#ifdef SMALL
|
|
#define getopt_long(a,b,c,d,e) getopt(a,b,c)
|
|
#else
|
|
static const struct option longopts[] = {
|
|
{ "stdout", no_argument, 0, 'c' },
|
|
{ "to-stdout", no_argument, 0, 'c' },
|
|
{ "decompress", no_argument, 0, 'd' },
|
|
{ "uncompress", no_argument, 0, 'd' },
|
|
{ "force", no_argument, 0, 'f' },
|
|
{ "help", no_argument, 0, 'h' },
|
|
{ "keep", no_argument, 0, 'k' },
|
|
{ "list", no_argument, 0, 'l' },
|
|
{ "no-name", no_argument, 0, 'n' },
|
|
{ "name", no_argument, 0, 'N' },
|
|
{ "quiet", no_argument, 0, 'q' },
|
|
{ "recursive", no_argument, 0, 'r' },
|
|
{ "suffix", required_argument, 0, 'S' },
|
|
{ "test", no_argument, 0, 't' },
|
|
{ "verbose", no_argument, 0, 'v' },
|
|
{ "version", no_argument, 0, 'V' },
|
|
{ "fast", no_argument, 0, '1' },
|
|
{ "best", no_argument, 0, '9' },
|
|
{ "ascii", no_argument, 0, 'a' },
|
|
{ "license", no_argument, 0, 'L' },
|
|
{ NULL, no_argument, 0, 0 },
|
|
};
|
|
#endif
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
const char *progname = getprogname();
|
|
#ifndef SMALL
|
|
char *gzip;
|
|
int len;
|
|
#endif
|
|
int ch;
|
|
|
|
setup_signals();
|
|
|
|
#ifndef SMALL
|
|
if ((gzip = getenv("GZIP")) != NULL)
|
|
prepend_gzip(gzip, &argc, &argv);
|
|
#endif
|
|
|
|
/*
|
|
* XXX
|
|
* handle being called `gunzip', `zcat' and `gzcat'
|
|
*/
|
|
if (strcmp(progname, "gunzip") == 0)
|
|
dflag = 1;
|
|
else if (strcmp(progname, "zcat") == 0 ||
|
|
strcmp(progname, "gzcat") == 0)
|
|
dflag = cflag = 1;
|
|
|
|
#ifdef SMALL
|
|
#define OPT_LIST "123456789cdhlV"
|
|
#else
|
|
#define OPT_LIST "123456789acdfhklLNnqrS:tVv"
|
|
#endif
|
|
|
|
while ((ch = getopt_long(argc, argv, OPT_LIST, longopts, NULL)) != -1) {
|
|
switch (ch) {
|
|
case '1': case '2': case '3':
|
|
case '4': case '5': case '6':
|
|
case '7': case '8': case '9':
|
|
numflag = ch - '0';
|
|
break;
|
|
case 'c':
|
|
cflag = 1;
|
|
break;
|
|
case 'd':
|
|
dflag = 1;
|
|
break;
|
|
case 'l':
|
|
lflag = 1;
|
|
dflag = 1;
|
|
break;
|
|
case 'V':
|
|
display_version();
|
|
/* NOTREACHED */
|
|
#ifndef SMALL
|
|
case 'a':
|
|
fprintf(stderr, "%s: option --ascii ignored on this system\n", progname);
|
|
break;
|
|
case 'f':
|
|
fflag = 1;
|
|
break;
|
|
case 'k':
|
|
kflag = 1;
|
|
break;
|
|
case 'L':
|
|
display_license();
|
|
/* NOT REACHED */
|
|
case 'N':
|
|
nflag = 0;
|
|
Nflag = 1;
|
|
break;
|
|
case 'n':
|
|
nflag = 1;
|
|
Nflag = 0;
|
|
break;
|
|
case 'q':
|
|
qflag = 1;
|
|
break;
|
|
case 'r':
|
|
rflag = 1;
|
|
break;
|
|
case 'S':
|
|
len = strlen(optarg);
|
|
if (len != 0) {
|
|
if (len > SUFFIX_MAXLEN)
|
|
errx(1, "incorrect suffix: '%s': too long", optarg);
|
|
suffixes[0].zipped = optarg;
|
|
suffixes[0].ziplen = len;
|
|
} else {
|
|
suffixes[NUM_SUFFIXES - 1].zipped = "";
|
|
suffixes[NUM_SUFFIXES - 1].ziplen = 0;
|
|
}
|
|
break;
|
|
case 't':
|
|
cflag = 1;
|
|
tflag = 1;
|
|
dflag = 1;
|
|
break;
|
|
case 'v':
|
|
vflag = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
usage();
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
if (argc == 0) {
|
|
if (dflag) /* stdin mode */
|
|
handle_stdin();
|
|
else /* stdout mode */
|
|
handle_stdout();
|
|
} else {
|
|
do {
|
|
handle_pathname(argv[0]);
|
|
} while (*++argv);
|
|
}
|
|
#ifndef SMALL
|
|
if (qflag == 0 && lflag && argc > 1)
|
|
print_list(-1, 0, "(totals)", 0);
|
|
#endif
|
|
exit(exit_value);
|
|
}
|
|
|
|
/* maybe print a warning */
|
|
void
|
|
maybe_warn(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
if (qflag == 0) {
|
|
va_start(ap, fmt);
|
|
vwarn(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
if (exit_value == 0)
|
|
exit_value = 1;
|
|
}
|
|
|
|
/* ... without an errno. */
|
|
void
|
|
maybe_warnx(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
if (qflag == 0) {
|
|
va_start(ap, fmt);
|
|
vwarnx(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
if (exit_value == 0)
|
|
exit_value = 1;
|
|
}
|
|
|
|
/* maybe print an error */
|
|
void
|
|
maybe_err(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
if (qflag == 0) {
|
|
va_start(ap, fmt);
|
|
vwarn(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
exit(2);
|
|
}
|
|
|
|
#if !defined(NO_BZIP2_SUPPORT) || !defined(NO_PACK_SUPPORT) || \
|
|
!defined(NO_XZ_SUPPORT)
|
|
/* ... without an errno. */
|
|
void
|
|
maybe_errx(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
if (qflag == 0) {
|
|
va_start(ap, fmt);
|
|
vwarnx(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
exit(2);
|
|
}
|
|
#endif
|
|
|
|
#ifndef SMALL
|
|
/* split up $GZIP and prepend it to the argument list */
|
|
static void
|
|
prepend_gzip(char *gzip, int *argc, char ***argv)
|
|
{
|
|
char *s, **nargv, **ac;
|
|
int nenvarg = 0, i;
|
|
|
|
/* scan how many arguments there are */
|
|
for (s = gzip;;) {
|
|
while (*s == ' ' || *s == '\t')
|
|
s++;
|
|
if (*s == 0)
|
|
goto count_done;
|
|
nenvarg++;
|
|
while (*s != ' ' && *s != '\t')
|
|
if (*s++ == 0)
|
|
goto count_done;
|
|
}
|
|
count_done:
|
|
/* punt early */
|
|
if (nenvarg == 0)
|
|
return;
|
|
|
|
*argc += nenvarg;
|
|
ac = *argv;
|
|
|
|
nargv = (char **)malloc((*argc + 1) * sizeof(char *));
|
|
if (nargv == NULL)
|
|
maybe_err("malloc");
|
|
|
|
/* stash this away */
|
|
*argv = nargv;
|
|
|
|
/* copy the program name first */
|
|
i = 0;
|
|
nargv[i++] = *(ac++);
|
|
|
|
/* take a copy of $GZIP and add it to the array */
|
|
s = strdup(gzip);
|
|
if (s == NULL)
|
|
maybe_err("strdup");
|
|
for (;;) {
|
|
/* Skip whitespaces. */
|
|
while (*s == ' ' || *s == '\t')
|
|
s++;
|
|
if (*s == 0)
|
|
goto copy_done;
|
|
nargv[i++] = s;
|
|
/* Find the end of this argument. */
|
|
while (*s != ' ' && *s != '\t')
|
|
if (*s++ == 0)
|
|
/* Argument followed by NUL. */
|
|
goto copy_done;
|
|
/* Terminate by overwriting ' ' or '\t' with NUL. */
|
|
*s++ = 0;
|
|
}
|
|
copy_done:
|
|
|
|
/* copy the original arguments and a NULL */
|
|
while (*ac)
|
|
nargv[i++] = *(ac++);
|
|
nargv[i] = NULL;
|
|
}
|
|
#endif
|
|
|
|
/* compress input to output. Return bytes read, -1 on error */
|
|
static off_t
|
|
gz_compress(int in, int out, off_t *gsizep, const char *origname, uint32_t mtime)
|
|
{
|
|
z_stream z;
|
|
char *outbufp, *inbufp;
|
|
off_t in_tot = 0, out_tot = 0;
|
|
ssize_t in_size;
|
|
int i, error;
|
|
uLong crc;
|
|
#ifdef SMALL
|
|
static char header[] = { GZIP_MAGIC0, GZIP_MAGIC1, Z_DEFLATED, 0,
|
|
0, 0, 0, 0,
|
|
0, OS_CODE };
|
|
#endif
|
|
|
|
outbufp = malloc(BUFLEN);
|
|
inbufp = malloc(BUFLEN);
|
|
if (outbufp == NULL || inbufp == NULL) {
|
|
maybe_err("malloc failed");
|
|
goto out;
|
|
}
|
|
|
|
memset(&z, 0, sizeof z);
|
|
z.zalloc = Z_NULL;
|
|
z.zfree = Z_NULL;
|
|
z.opaque = 0;
|
|
|
|
#ifdef SMALL
|
|
memcpy(outbufp, header, sizeof header);
|
|
i = sizeof header;
|
|
#else
|
|
if (nflag != 0) {
|
|
mtime = 0;
|
|
origname = "";
|
|
}
|
|
|
|
i = snprintf(outbufp, BUFLEN, "%c%c%c%c%c%c%c%c%c%c%s",
|
|
GZIP_MAGIC0, GZIP_MAGIC1, Z_DEFLATED,
|
|
*origname ? ORIG_NAME : 0,
|
|
mtime & 0xff,
|
|
(mtime >> 8) & 0xff,
|
|
(mtime >> 16) & 0xff,
|
|
(mtime >> 24) & 0xff,
|
|
numflag == 1 ? 4 : numflag == 9 ? 2 : 0,
|
|
OS_CODE, origname);
|
|
if (i >= BUFLEN)
|
|
/* this need PATH_MAX > BUFLEN ... */
|
|
maybe_err("snprintf");
|
|
if (*origname)
|
|
i++;
|
|
#endif
|
|
|
|
z.next_out = (unsigned char *)outbufp + i;
|
|
z.avail_out = BUFLEN - i;
|
|
|
|
error = deflateInit2(&z, numflag, Z_DEFLATED,
|
|
(-MAX_WBITS), 8, Z_DEFAULT_STRATEGY);
|
|
if (error != Z_OK) {
|
|
maybe_warnx("deflateInit2 failed");
|
|
in_tot = -1;
|
|
goto out;
|
|
}
|
|
|
|
crc = crc32(0L, Z_NULL, 0);
|
|
for (;;) {
|
|
if (z.avail_out == 0) {
|
|
if (write_retry(out, outbufp, BUFLEN) != BUFLEN) {
|
|
maybe_warn("write");
|
|
out_tot = -1;
|
|
goto out;
|
|
}
|
|
|
|
out_tot += BUFLEN;
|
|
z.next_out = (unsigned char *)outbufp;
|
|
z.avail_out = BUFLEN;
|
|
}
|
|
|
|
if (z.avail_in == 0) {
|
|
in_size = read(in, inbufp, BUFLEN);
|
|
if (in_size < 0) {
|
|
maybe_warn("read");
|
|
in_tot = -1;
|
|
goto out;
|
|
}
|
|
if (in_size == 0)
|
|
break;
|
|
infile_newdata(in_size);
|
|
|
|
crc = crc32(crc, (const Bytef *)inbufp, (unsigned)in_size);
|
|
in_tot += in_size;
|
|
z.next_in = (unsigned char *)inbufp;
|
|
z.avail_in = in_size;
|
|
}
|
|
|
|
error = deflate(&z, Z_NO_FLUSH);
|
|
if (error != Z_OK && error != Z_STREAM_END) {
|
|
maybe_warnx("deflate failed");
|
|
in_tot = -1;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* clean up */
|
|
for (;;) {
|
|
size_t len;
|
|
ssize_t w;
|
|
|
|
error = deflate(&z, Z_FINISH);
|
|
if (error != Z_OK && error != Z_STREAM_END) {
|
|
maybe_warnx("deflate failed");
|
|
in_tot = -1;
|
|
goto out;
|
|
}
|
|
|
|
len = (char *)z.next_out - outbufp;
|
|
|
|
w = write_retry(out, outbufp, len);
|
|
if (w == -1 || (size_t)w != len) {
|
|
maybe_warn("write");
|
|
out_tot = -1;
|
|
goto out;
|
|
}
|
|
out_tot += len;
|
|
z.next_out = (unsigned char *)outbufp;
|
|
z.avail_out = BUFLEN;
|
|
|
|
if (error == Z_STREAM_END)
|
|
break;
|
|
}
|
|
|
|
if (deflateEnd(&z) != Z_OK) {
|
|
maybe_warnx("deflateEnd failed");
|
|
in_tot = -1;
|
|
goto out;
|
|
}
|
|
|
|
i = snprintf(outbufp, BUFLEN, "%c%c%c%c%c%c%c%c",
|
|
(int)crc & 0xff,
|
|
(int)(crc >> 8) & 0xff,
|
|
(int)(crc >> 16) & 0xff,
|
|
(int)(crc >> 24) & 0xff,
|
|
(int)in_tot & 0xff,
|
|
(int)(in_tot >> 8) & 0xff,
|
|
(int)(in_tot >> 16) & 0xff,
|
|
(int)(in_tot >> 24) & 0xff);
|
|
if (i != 8)
|
|
maybe_err("snprintf");
|
|
if (write_retry(out, outbufp, i) != i) {
|
|
maybe_warn("write");
|
|
in_tot = -1;
|
|
} else
|
|
out_tot += i;
|
|
|
|
out:
|
|
if (inbufp != NULL)
|
|
free(inbufp);
|
|
if (outbufp != NULL)
|
|
free(outbufp);
|
|
if (gsizep)
|
|
*gsizep = out_tot;
|
|
return in_tot;
|
|
}
|
|
|
|
/*
|
|
* uncompress input to output then close the input. return the
|
|
* uncompressed size written, and put the compressed sized read
|
|
* into `*gsizep'.
|
|
*/
|
|
static off_t
|
|
gz_uncompress(int in, int out, char *pre, size_t prelen, off_t *gsizep,
|
|
const char *filename)
|
|
{
|
|
z_stream z;
|
|
char *outbufp, *inbufp;
|
|
off_t out_tot = -1, in_tot = 0;
|
|
uint32_t out_sub_tot = 0;
|
|
enum {
|
|
GZSTATE_MAGIC0,
|
|
GZSTATE_MAGIC1,
|
|
GZSTATE_METHOD,
|
|
GZSTATE_FLAGS,
|
|
GZSTATE_SKIPPING,
|
|
GZSTATE_EXTRA,
|
|
GZSTATE_EXTRA2,
|
|
GZSTATE_EXTRA3,
|
|
GZSTATE_ORIGNAME,
|
|
GZSTATE_COMMENT,
|
|
GZSTATE_HEAD_CRC1,
|
|
GZSTATE_HEAD_CRC2,
|
|
GZSTATE_INIT,
|
|
GZSTATE_READ,
|
|
GZSTATE_CRC,
|
|
GZSTATE_LEN,
|
|
} state = GZSTATE_MAGIC0;
|
|
int flags = 0, skip_count = 0;
|
|
int error = Z_STREAM_ERROR, done_reading = 0;
|
|
uLong crc = 0;
|
|
ssize_t wr;
|
|
int needmore = 0;
|
|
|
|
#define ADVANCE() { z.next_in++; z.avail_in--; }
|
|
|
|
if ((outbufp = malloc(BUFLEN)) == NULL) {
|
|
maybe_err("malloc failed");
|
|
goto out2;
|
|
}
|
|
if ((inbufp = malloc(BUFLEN)) == NULL) {
|
|
maybe_err("malloc failed");
|
|
goto out1;
|
|
}
|
|
|
|
memset(&z, 0, sizeof z);
|
|
z.avail_in = prelen;
|
|
z.next_in = (unsigned char *)pre;
|
|
z.avail_out = BUFLEN;
|
|
z.next_out = (unsigned char *)outbufp;
|
|
z.zalloc = NULL;
|
|
z.zfree = NULL;
|
|
z.opaque = 0;
|
|
|
|
in_tot = prelen;
|
|
out_tot = 0;
|
|
|
|
for (;;) {
|
|
check_siginfo();
|
|
if ((z.avail_in == 0 || needmore) && done_reading == 0) {
|
|
ssize_t in_size;
|
|
|
|
if (z.avail_in > 0) {
|
|
memmove(inbufp, z.next_in, z.avail_in);
|
|
}
|
|
z.next_in = (unsigned char *)inbufp;
|
|
in_size = read(in, z.next_in + z.avail_in,
|
|
BUFLEN - z.avail_in);
|
|
|
|
if (in_size == -1) {
|
|
maybe_warn("failed to read stdin");
|
|
goto stop_and_fail;
|
|
} else if (in_size == 0) {
|
|
done_reading = 1;
|
|
}
|
|
infile_newdata(in_size);
|
|
|
|
z.avail_in += in_size;
|
|
needmore = 0;
|
|
|
|
in_tot += in_size;
|
|
}
|
|
if (z.avail_in == 0) {
|
|
if (done_reading && state != GZSTATE_MAGIC0) {
|
|
maybe_warnx("%s: unexpected end of file",
|
|
filename);
|
|
goto stop_and_fail;
|
|
}
|
|
goto stop;
|
|
}
|
|
switch (state) {
|
|
case GZSTATE_MAGIC0:
|
|
if (*z.next_in != GZIP_MAGIC0) {
|
|
if (in_tot > 0) {
|
|
maybe_warnx("%s: trailing garbage "
|
|
"ignored", filename);
|
|
exit_value = 2;
|
|
goto stop;
|
|
}
|
|
maybe_warnx("input not gziped (MAGIC0)");
|
|
goto stop_and_fail;
|
|
}
|
|
ADVANCE();
|
|
state++;
|
|
out_sub_tot = 0;
|
|
crc = crc32(0L, Z_NULL, 0);
|
|
break;
|
|
|
|
case GZSTATE_MAGIC1:
|
|
if (*z.next_in != GZIP_MAGIC1 &&
|
|
*z.next_in != GZIP_OMAGIC1) {
|
|
maybe_warnx("input not gziped (MAGIC1)");
|
|
goto stop_and_fail;
|
|
}
|
|
ADVANCE();
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_METHOD:
|
|
if (*z.next_in != Z_DEFLATED) {
|
|
maybe_warnx("unknown compression method");
|
|
goto stop_and_fail;
|
|
}
|
|
ADVANCE();
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_FLAGS:
|
|
flags = *z.next_in;
|
|
ADVANCE();
|
|
skip_count = 6;
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_SKIPPING:
|
|
if (skip_count > 0) {
|
|
skip_count--;
|
|
ADVANCE();
|
|
} else
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_EXTRA:
|
|
if ((flags & EXTRA_FIELD) == 0) {
|
|
state = GZSTATE_ORIGNAME;
|
|
break;
|
|
}
|
|
skip_count = *z.next_in;
|
|
ADVANCE();
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_EXTRA2:
|
|
skip_count |= ((*z.next_in) << 8);
|
|
ADVANCE();
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_EXTRA3:
|
|
if (skip_count > 0) {
|
|
skip_count--;
|
|
ADVANCE();
|
|
} else
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_ORIGNAME:
|
|
if ((flags & ORIG_NAME) == 0) {
|
|
state++;
|
|
break;
|
|
}
|
|
if (*z.next_in == 0)
|
|
state++;
|
|
ADVANCE();
|
|
break;
|
|
|
|
case GZSTATE_COMMENT:
|
|
if ((flags & COMMENT) == 0) {
|
|
state++;
|
|
break;
|
|
}
|
|
if (*z.next_in == 0)
|
|
state++;
|
|
ADVANCE();
|
|
break;
|
|
|
|
case GZSTATE_HEAD_CRC1:
|
|
if (flags & HEAD_CRC)
|
|
skip_count = 2;
|
|
else
|
|
skip_count = 0;
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_HEAD_CRC2:
|
|
if (skip_count > 0) {
|
|
skip_count--;
|
|
ADVANCE();
|
|
} else
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_INIT:
|
|
if (inflateInit2(&z, -MAX_WBITS) != Z_OK) {
|
|
maybe_warnx("failed to inflateInit");
|
|
goto stop_and_fail;
|
|
}
|
|
state++;
|
|
break;
|
|
|
|
case GZSTATE_READ:
|
|
error = inflate(&z, Z_FINISH);
|
|
switch (error) {
|
|
/* Z_BUF_ERROR goes with Z_FINISH... */
|
|
case Z_BUF_ERROR:
|
|
if (z.avail_out > 0 && !done_reading)
|
|
continue;
|
|
|
|
case Z_STREAM_END:
|
|
case Z_OK:
|
|
break;
|
|
|
|
case Z_NEED_DICT:
|
|
maybe_warnx("Z_NEED_DICT error");
|
|
goto stop_and_fail;
|
|
case Z_DATA_ERROR:
|
|
maybe_warnx("data stream error");
|
|
goto stop_and_fail;
|
|
case Z_STREAM_ERROR:
|
|
maybe_warnx("internal stream error");
|
|
goto stop_and_fail;
|
|
case Z_MEM_ERROR:
|
|
maybe_warnx("memory allocation error");
|
|
goto stop_and_fail;
|
|
|
|
default:
|
|
maybe_warn("unknown error from inflate(): %d",
|
|
error);
|
|
}
|
|
wr = BUFLEN - z.avail_out;
|
|
|
|
if (wr != 0) {
|
|
crc = crc32(crc, (const Bytef *)outbufp, (unsigned)wr);
|
|
if (
|
|
#ifndef SMALL
|
|
/* don't write anything with -t */
|
|
tflag == 0 &&
|
|
#endif
|
|
write_retry(out, outbufp, wr) != wr) {
|
|
maybe_warn("error writing to output");
|
|
goto stop_and_fail;
|
|
}
|
|
|
|
out_tot += wr;
|
|
out_sub_tot += wr;
|
|
}
|
|
|
|
if (error == Z_STREAM_END) {
|
|
inflateEnd(&z);
|
|
state++;
|
|
}
|
|
|
|
z.next_out = (unsigned char *)outbufp;
|
|
z.avail_out = BUFLEN;
|
|
|
|
break;
|
|
case GZSTATE_CRC:
|
|
{
|
|
uLong origcrc;
|
|
|
|
if (z.avail_in < 4) {
|
|
if (!done_reading) {
|
|
needmore = 1;
|
|
continue;
|
|
}
|
|
maybe_warnx("truncated input");
|
|
goto stop_and_fail;
|
|
}
|
|
origcrc = ((unsigned)z.next_in[0] & 0xff) |
|
|
((unsigned)z.next_in[1] & 0xff) << 8 |
|
|
((unsigned)z.next_in[2] & 0xff) << 16 |
|
|
((unsigned)z.next_in[3] & 0xff) << 24;
|
|
if (origcrc != crc) {
|
|
maybe_warnx("invalid compressed"
|
|
" data--crc error");
|
|
goto stop_and_fail;
|
|
}
|
|
}
|
|
|
|
z.avail_in -= 4;
|
|
z.next_in += 4;
|
|
|
|
if (!z.avail_in && done_reading) {
|
|
goto stop;
|
|
}
|
|
state++;
|
|
break;
|
|
case GZSTATE_LEN:
|
|
{
|
|
uLong origlen;
|
|
|
|
if (z.avail_in < 4) {
|
|
if (!done_reading) {
|
|
needmore = 1;
|
|
continue;
|
|
}
|
|
maybe_warnx("truncated input");
|
|
goto stop_and_fail;
|
|
}
|
|
origlen = ((unsigned)z.next_in[0] & 0xff) |
|
|
((unsigned)z.next_in[1] & 0xff) << 8 |
|
|
((unsigned)z.next_in[2] & 0xff) << 16 |
|
|
((unsigned)z.next_in[3] & 0xff) << 24;
|
|
|
|
if (origlen != out_sub_tot) {
|
|
maybe_warnx("invalid compressed"
|
|
" data--length error");
|
|
goto stop_and_fail;
|
|
}
|
|
}
|
|
|
|
z.avail_in -= 4;
|
|
z.next_in += 4;
|
|
|
|
if (error < 0) {
|
|
maybe_warnx("decompression error");
|
|
goto stop_and_fail;
|
|
}
|
|
state = GZSTATE_MAGIC0;
|
|
break;
|
|
}
|
|
continue;
|
|
stop_and_fail:
|
|
out_tot = -1;
|
|
stop:
|
|
break;
|
|
}
|
|
if (state > GZSTATE_INIT)
|
|
inflateEnd(&z);
|
|
|
|
free(inbufp);
|
|
out1:
|
|
free(outbufp);
|
|
out2:
|
|
if (gsizep)
|
|
*gsizep = in_tot;
|
|
return (out_tot);
|
|
}
|
|
|
|
#ifndef SMALL
|
|
/*
|
|
* set the owner, mode, flags & utimes using the given file descriptor.
|
|
* file is only used in possible warning messages.
|
|
*/
|
|
static void
|
|
copymodes(int fd, const struct stat *sbp, const char *file)
|
|
{
|
|
struct timespec times[2];
|
|
struct stat sb;
|
|
|
|
/*
|
|
* If we have no info on the input, give this file some
|
|
* default values and return..
|
|
*/
|
|
if (sbp == NULL) {
|
|
mode_t mask = umask(022);
|
|
|
|
(void)fchmod(fd, DEFFILEMODE & ~mask);
|
|
(void)umask(mask);
|
|
return;
|
|
}
|
|
sb = *sbp;
|
|
|
|
/* if the chown fails, remove set-id bits as-per compress(1) */
|
|
if (fchown(fd, sb.st_uid, sb.st_gid) < 0) {
|
|
if (errno != EPERM)
|
|
maybe_warn("couldn't fchown: %s", file);
|
|
sb.st_mode &= ~(S_ISUID|S_ISGID);
|
|
}
|
|
|
|
/* we only allow set-id and the 9 normal permission bits */
|
|
sb.st_mode &= S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
|
|
if (fchmod(fd, sb.st_mode) < 0)
|
|
maybe_warn("couldn't fchmod: %s", file);
|
|
|
|
times[0] = sb.st_atim;
|
|
times[1] = sb.st_mtim;
|
|
if (futimens(fd, times) < 0)
|
|
maybe_warn("couldn't futimens: %s", file);
|
|
|
|
/* only try flags if they exist already */
|
|
if (sb.st_flags != 0 && fchflags(fd, sb.st_flags) < 0)
|
|
maybe_warn("couldn't fchflags: %s", file);
|
|
}
|
|
#endif
|
|
|
|
/* what sort of file is this? */
|
|
static enum filetype
|
|
file_gettype(u_char *buf)
|
|
{
|
|
|
|
if (buf[0] == GZIP_MAGIC0 &&
|
|
(buf[1] == GZIP_MAGIC1 || buf[1] == GZIP_OMAGIC1))
|
|
return FT_GZIP;
|
|
else
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
if (memcmp(buf, BZIP2_MAGIC, 3) == 0 &&
|
|
buf[3] >= '0' && buf[3] <= '9')
|
|
return FT_BZIP2;
|
|
else
|
|
#endif
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
if (memcmp(buf, Z_MAGIC, 2) == 0)
|
|
return FT_Z;
|
|
else
|
|
#endif
|
|
#ifndef NO_PACK_SUPPORT
|
|
if (memcmp(buf, PACK_MAGIC, 2) == 0)
|
|
return FT_PACK;
|
|
else
|
|
#endif
|
|
#ifndef NO_XZ_SUPPORT
|
|
if (memcmp(buf, XZ_MAGIC, 4) == 0) /* XXX: We only have 4 bytes */
|
|
return FT_XZ;
|
|
else
|
|
#endif
|
|
return FT_UNKNOWN;
|
|
}
|
|
|
|
#ifndef SMALL
|
|
/* check the outfile is OK. */
|
|
static int
|
|
check_outfile(const char *outfile)
|
|
{
|
|
struct stat sb;
|
|
int ok = 1;
|
|
|
|
if (lflag == 0 && stat(outfile, &sb) == 0) {
|
|
if (fflag)
|
|
unlink(outfile);
|
|
else if (isatty(STDIN_FILENO)) {
|
|
char ans[10] = { 'n', '\0' }; /* default */
|
|
|
|
fprintf(stderr, "%s already exists -- do you wish to "
|
|
"overwrite (y or n)? " , outfile);
|
|
(void)fgets(ans, sizeof(ans) - 1, stdin);
|
|
if (ans[0] != 'y' && ans[0] != 'Y') {
|
|
fprintf(stderr, "\tnot overwriting\n");
|
|
ok = 0;
|
|
} else
|
|
unlink(outfile);
|
|
} else {
|
|
maybe_warnx("%s already exists -- skipping", outfile);
|
|
ok = 0;
|
|
}
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
static void
|
|
unlink_input(const char *file, const struct stat *sb)
|
|
{
|
|
struct stat nsb;
|
|
|
|
if (kflag)
|
|
return;
|
|
if (stat(file, &nsb) != 0)
|
|
/* Must be gone already */
|
|
return;
|
|
if (nsb.st_dev != sb->st_dev || nsb.st_ino != sb->st_ino)
|
|
/* Definitely a different file */
|
|
return;
|
|
unlink(file);
|
|
}
|
|
|
|
static void
|
|
got_sigint(int signo __unused)
|
|
{
|
|
|
|
if (remove_file != NULL)
|
|
unlink(remove_file);
|
|
_exit(2);
|
|
}
|
|
|
|
static void
|
|
got_siginfo(int signo __unused)
|
|
{
|
|
|
|
print_info = 1;
|
|
}
|
|
|
|
static void
|
|
setup_signals(void)
|
|
{
|
|
|
|
signal(SIGINFO, got_siginfo);
|
|
signal(SIGINT, got_sigint);
|
|
}
|
|
|
|
static void
|
|
infile_newdata(size_t newdata)
|
|
{
|
|
|
|
infile_current += newdata;
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
infile_set(const char *newinfile, off_t total)
|
|
{
|
|
|
|
if (newinfile)
|
|
infile = newinfile;
|
|
#ifndef SMALL
|
|
infile_total = total;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
infile_clear(void)
|
|
{
|
|
|
|
infile = NULL;
|
|
#ifndef SMALL
|
|
infile_total = infile_current = 0;
|
|
#endif
|
|
}
|
|
|
|
static const suffixes_t *
|
|
check_suffix(char *file, int xlate)
|
|
{
|
|
const suffixes_t *s;
|
|
int len = strlen(file);
|
|
char *sp;
|
|
|
|
for (s = suffixes; s != suffixes + NUM_SUFFIXES; s++) {
|
|
/* if it doesn't fit in "a.suf", don't bother */
|
|
if (s->ziplen >= len)
|
|
continue;
|
|
sp = file + len - s->ziplen;
|
|
if (strcmp(s->zipped, sp) != 0)
|
|
continue;
|
|
if (xlate)
|
|
strcpy(sp, s->normal);
|
|
return s;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* compress the given file: create a corresponding .gz file and remove the
|
|
* original.
|
|
*/
|
|
static off_t
|
|
file_compress(char *file, char *outfile, size_t outsize)
|
|
{
|
|
int in;
|
|
int out;
|
|
off_t size, in_size;
|
|
#ifndef SMALL
|
|
struct stat isb, osb;
|
|
const suffixes_t *suff;
|
|
#endif
|
|
|
|
in = open(file, O_RDONLY);
|
|
if (in == -1) {
|
|
maybe_warn("can't open %s", file);
|
|
return (-1);
|
|
}
|
|
|
|
#ifndef SMALL
|
|
if (fstat(in, &isb) != 0) {
|
|
maybe_warn("couldn't stat: %s", file);
|
|
close(in);
|
|
return (-1);
|
|
}
|
|
#endif
|
|
|
|
#ifndef SMALL
|
|
if (fstat(in, &isb) != 0) {
|
|
close(in);
|
|
maybe_warn("can't stat %s", file);
|
|
return -1;
|
|
}
|
|
infile_set(file, isb.st_size);
|
|
#endif
|
|
|
|
if (cflag == 0) {
|
|
#ifndef SMALL
|
|
if (isb.st_nlink > 1 && fflag == 0) {
|
|
maybe_warnx("%s has %ju other link%s -- "
|
|
"skipping", file,
|
|
(uintmax_t)isb.st_nlink - 1,
|
|
isb.st_nlink == 1 ? "" : "s");
|
|
close(in);
|
|
return -1;
|
|
}
|
|
|
|
if (fflag == 0 && (suff = check_suffix(file, 0)) &&
|
|
suff->zipped[0] != 0) {
|
|
maybe_warnx("%s already has %s suffix -- unchanged",
|
|
file, suff->zipped);
|
|
close(in);
|
|
return (-1);
|
|
}
|
|
#endif
|
|
|
|
/* Add (usually) .gz to filename */
|
|
if ((size_t)snprintf(outfile, outsize, "%s%s",
|
|
file, suffixes[0].zipped) >= outsize)
|
|
memcpy(outfile + outsize - suffixes[0].ziplen - 1,
|
|
suffixes[0].zipped, suffixes[0].ziplen + 1);
|
|
|
|
#ifndef SMALL
|
|
if (check_outfile(outfile) == 0) {
|
|
close(in);
|
|
return (-1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (cflag == 0) {
|
|
out = open(outfile, O_WRONLY | O_CREAT | O_EXCL, 0600);
|
|
if (out == -1) {
|
|
maybe_warn("could not create output: %s", outfile);
|
|
fclose(stdin);
|
|
return (-1);
|
|
}
|
|
#ifndef SMALL
|
|
remove_file = outfile;
|
|
#endif
|
|
} else
|
|
out = STDOUT_FILENO;
|
|
|
|
in_size = gz_compress(in, out, &size, basename(file), (uint32_t)isb.st_mtime);
|
|
|
|
(void)close(in);
|
|
|
|
/*
|
|
* If there was an error, in_size will be -1.
|
|
* If we compressed to stdout, just return the size.
|
|
* Otherwise stat the file and check it is the correct size.
|
|
* We only blow away the file if we can stat the output and it
|
|
* has the expected size.
|
|
*/
|
|
if (cflag != 0)
|
|
return in_size == -1 ? -1 : size;
|
|
|
|
#ifndef SMALL
|
|
if (fstat(out, &osb) != 0) {
|
|
maybe_warn("couldn't stat: %s", outfile);
|
|
goto bad_outfile;
|
|
}
|
|
|
|
if (osb.st_size != size) {
|
|
maybe_warnx("output file: %s wrong size (%ju != %ju), deleting",
|
|
outfile, (uintmax_t)osb.st_size, (uintmax_t)size);
|
|
goto bad_outfile;
|
|
}
|
|
|
|
copymodes(out, &isb, outfile);
|
|
remove_file = NULL;
|
|
#endif
|
|
if (close(out) == -1)
|
|
maybe_warn("couldn't close output");
|
|
|
|
/* output is good, ok to delete input */
|
|
unlink_input(file, &isb);
|
|
return (size);
|
|
|
|
#ifndef SMALL
|
|
bad_outfile:
|
|
if (close(out) == -1)
|
|
maybe_warn("couldn't close output");
|
|
|
|
maybe_warnx("leaving original %s", file);
|
|
unlink(outfile);
|
|
return (size);
|
|
#endif
|
|
}
|
|
|
|
/* uncompress the given file and remove the original */
|
|
static off_t
|
|
file_uncompress(char *file, char *outfile, size_t outsize)
|
|
{
|
|
struct stat isb, osb;
|
|
off_t size;
|
|
ssize_t rbytes;
|
|
unsigned char header1[4];
|
|
enum filetype method;
|
|
int fd, ofd, zfd = -1;
|
|
size_t in_size;
|
|
#ifndef SMALL
|
|
ssize_t rv;
|
|
time_t timestamp = 0;
|
|
char name[PATH_MAX + 1];
|
|
#endif
|
|
|
|
/* gather the old name info */
|
|
|
|
fd = open(file, O_RDONLY);
|
|
if (fd < 0) {
|
|
maybe_warn("can't open %s", file);
|
|
goto lose;
|
|
}
|
|
if (fstat(fd, &isb) != 0) {
|
|
close(fd);
|
|
maybe_warn("can't stat %s", file);
|
|
goto lose;
|
|
}
|
|
if (S_ISREG(isb.st_mode))
|
|
in_size = isb.st_size;
|
|
else
|
|
in_size = 0;
|
|
infile_set(file, in_size);
|
|
|
|
strlcpy(outfile, file, outsize);
|
|
if (check_suffix(outfile, 1) == NULL && !(cflag || lflag)) {
|
|
maybe_warnx("%s: unknown suffix -- ignored", file);
|
|
goto lose;
|
|
}
|
|
|
|
rbytes = read(fd, header1, sizeof header1);
|
|
if (rbytes != sizeof header1) {
|
|
/* we don't want to fail here. */
|
|
#ifndef SMALL
|
|
if (fflag)
|
|
goto lose;
|
|
#endif
|
|
if (rbytes == -1)
|
|
maybe_warn("can't read %s", file);
|
|
else
|
|
goto unexpected_EOF;
|
|
goto lose;
|
|
}
|
|
infile_newdata(rbytes);
|
|
|
|
method = file_gettype(header1);
|
|
#ifndef SMALL
|
|
if (fflag == 0 && method == FT_UNKNOWN) {
|
|
maybe_warnx("%s: not in gzip format", file);
|
|
goto lose;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifndef SMALL
|
|
if (method == FT_GZIP && Nflag) {
|
|
unsigned char ts[4]; /* timestamp */
|
|
|
|
rv = pread(fd, ts, sizeof ts, GZIP_TIMESTAMP);
|
|
if (rv >= 0 && rv < (ssize_t)(sizeof ts))
|
|
goto unexpected_EOF;
|
|
if (rv == -1) {
|
|
if (!fflag)
|
|
maybe_warn("can't read %s", file);
|
|
goto lose;
|
|
}
|
|
infile_newdata(rv);
|
|
timestamp = ts[3] << 24 | ts[2] << 16 | ts[1] << 8 | ts[0];
|
|
|
|
if (header1[3] & ORIG_NAME) {
|
|
rbytes = pread(fd, name, sizeof(name) - 1, GZIP_ORIGNAME);
|
|
if (rbytes < 0) {
|
|
maybe_warn("can't read %s", file);
|
|
goto lose;
|
|
}
|
|
if (name[0] != '\0') {
|
|
char *dp, *nf;
|
|
|
|
/* Make sure that name is NUL-terminated */
|
|
name[rbytes] = '\0';
|
|
|
|
/* strip saved directory name */
|
|
nf = strrchr(name, '/');
|
|
if (nf == NULL)
|
|
nf = name;
|
|
else
|
|
nf++;
|
|
|
|
/* preserve original directory name */
|
|
dp = strrchr(file, '/');
|
|
if (dp == NULL)
|
|
dp = file;
|
|
else
|
|
dp++;
|
|
snprintf(outfile, outsize, "%.*s%.*s",
|
|
(int) (dp - file),
|
|
file, (int) rbytes, nf);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
lseek(fd, 0, SEEK_SET);
|
|
|
|
if (cflag == 0 || lflag) {
|
|
#ifndef SMALL
|
|
if (isb.st_nlink > 1 && lflag == 0 && fflag == 0) {
|
|
maybe_warnx("%s has %ju other links -- skipping",
|
|
file, (uintmax_t)isb.st_nlink - 1);
|
|
goto lose;
|
|
}
|
|
if (nflag == 0 && timestamp)
|
|
isb.st_mtime = timestamp;
|
|
if (check_outfile(outfile) == 0)
|
|
goto lose;
|
|
#endif
|
|
}
|
|
|
|
if (cflag)
|
|
zfd = STDOUT_FILENO;
|
|
else if (lflag)
|
|
zfd = -1;
|
|
else {
|
|
zfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0600);
|
|
if (zfd == STDOUT_FILENO) {
|
|
/* We won't close STDOUT_FILENO later... */
|
|
zfd = dup(zfd);
|
|
close(STDOUT_FILENO);
|
|
}
|
|
if (zfd == -1) {
|
|
maybe_warn("can't open %s", outfile);
|
|
goto lose;
|
|
}
|
|
remove_file = outfile;
|
|
}
|
|
|
|
switch (method) {
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
case FT_BZIP2:
|
|
/* XXX */
|
|
if (lflag) {
|
|
maybe_warnx("no -l with bzip2 files");
|
|
goto lose;
|
|
}
|
|
|
|
size = unbzip2(fd, zfd, NULL, 0, NULL);
|
|
break;
|
|
#endif
|
|
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
case FT_Z: {
|
|
FILE *in, *out;
|
|
|
|
/* XXX */
|
|
if (lflag) {
|
|
maybe_warnx("no -l with Lempel-Ziv files");
|
|
goto lose;
|
|
}
|
|
|
|
if ((in = zdopen(fd)) == NULL) {
|
|
maybe_warn("zdopen for read: %s", file);
|
|
goto lose;
|
|
}
|
|
|
|
out = fdopen(dup(zfd), "w");
|
|
if (out == NULL) {
|
|
maybe_warn("fdopen for write: %s", outfile);
|
|
fclose(in);
|
|
goto lose;
|
|
}
|
|
|
|
size = zuncompress(in, out, NULL, 0, NULL);
|
|
/* need to fclose() if ferror() is true... */
|
|
if (ferror(in) | fclose(in)) {
|
|
maybe_warn("failed infile fclose");
|
|
unlink(outfile);
|
|
(void)fclose(out);
|
|
}
|
|
if (fclose(out) != 0) {
|
|
maybe_warn("failed outfile fclose");
|
|
unlink(outfile);
|
|
goto lose;
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
#ifndef NO_PACK_SUPPORT
|
|
case FT_PACK:
|
|
if (lflag) {
|
|
maybe_warnx("no -l with packed files");
|
|
goto lose;
|
|
}
|
|
|
|
size = unpack(fd, zfd, NULL, 0, NULL);
|
|
break;
|
|
#endif
|
|
|
|
#ifndef NO_XZ_SUPPORT
|
|
case FT_XZ:
|
|
if (lflag) {
|
|
maybe_warnx("no -l with xz files");
|
|
goto lose;
|
|
}
|
|
|
|
size = unxz(fd, zfd, NULL, 0, NULL);
|
|
break;
|
|
#endif
|
|
|
|
#ifndef SMALL
|
|
case FT_UNKNOWN:
|
|
if (lflag) {
|
|
maybe_warnx("no -l for unknown filetypes");
|
|
goto lose;
|
|
}
|
|
size = cat_fd(NULL, 0, NULL, fd);
|
|
break;
|
|
#endif
|
|
default:
|
|
if (lflag) {
|
|
print_list(fd, in_size, outfile, isb.st_mtime);
|
|
close(fd);
|
|
return -1; /* XXX */
|
|
}
|
|
|
|
size = gz_uncompress(fd, zfd, NULL, 0, NULL, file);
|
|
break;
|
|
}
|
|
|
|
if (close(fd) != 0)
|
|
maybe_warn("couldn't close input");
|
|
if (zfd != STDOUT_FILENO && close(zfd) != 0)
|
|
maybe_warn("couldn't close output");
|
|
|
|
if (size == -1) {
|
|
if (cflag == 0)
|
|
unlink(outfile);
|
|
maybe_warnx("%s: uncompress failed", file);
|
|
return -1;
|
|
}
|
|
|
|
/* if testing, or we uncompressed to stdout, this is all we need */
|
|
#ifndef SMALL
|
|
if (tflag)
|
|
return size;
|
|
#endif
|
|
/* if we are uncompressing to stdin, don't remove the file. */
|
|
if (cflag)
|
|
return size;
|
|
|
|
/*
|
|
* if we create a file...
|
|
*/
|
|
/*
|
|
* if we can't stat the file don't remove the file.
|
|
*/
|
|
|
|
ofd = open(outfile, O_RDWR, 0);
|
|
if (ofd == -1) {
|
|
maybe_warn("couldn't open (leaving original): %s",
|
|
outfile);
|
|
return -1;
|
|
}
|
|
if (fstat(ofd, &osb) != 0) {
|
|
maybe_warn("couldn't stat (leaving original): %s",
|
|
outfile);
|
|
close(ofd);
|
|
return -1;
|
|
}
|
|
if (osb.st_size != size) {
|
|
maybe_warnx("stat gave different size: %ju != %ju (leaving original)",
|
|
(uintmax_t)size, (uintmax_t)osb.st_size);
|
|
close(ofd);
|
|
unlink(outfile);
|
|
return -1;
|
|
}
|
|
#ifndef SMALL
|
|
copymodes(ofd, &isb, outfile);
|
|
remove_file = NULL;
|
|
#endif
|
|
close(ofd);
|
|
unlink_input(file, &isb);
|
|
return size;
|
|
|
|
unexpected_EOF:
|
|
maybe_warnx("%s: unexpected end of file", file);
|
|
lose:
|
|
if (fd != -1)
|
|
close(fd);
|
|
if (zfd != -1 && zfd != STDOUT_FILENO)
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
#ifndef SMALL
|
|
static void
|
|
check_siginfo(void)
|
|
{
|
|
if (print_info == 0)
|
|
return;
|
|
if (infile) {
|
|
if (infile_total) {
|
|
int pcent = (int)((100.0 * infile_current) / infile_total);
|
|
|
|
fprintf(stderr, "%s: done %llu/%llu bytes %d%%\n",
|
|
infile, (unsigned long long)infile_current,
|
|
(unsigned long long)infile_total, pcent);
|
|
} else
|
|
fprintf(stderr, "%s: done %llu bytes\n",
|
|
infile, (unsigned long long)infile_current);
|
|
}
|
|
print_info = 0;
|
|
}
|
|
|
|
static off_t
|
|
cat_fd(unsigned char * prepend, size_t count, off_t *gsizep, int fd)
|
|
{
|
|
char buf[BUFLEN];
|
|
off_t in_tot;
|
|
ssize_t w;
|
|
|
|
in_tot = count;
|
|
w = write_retry(STDOUT_FILENO, prepend, count);
|
|
if (w == -1 || (size_t)w != count) {
|
|
maybe_warn("write to stdout");
|
|
return -1;
|
|
}
|
|
for (;;) {
|
|
ssize_t rv;
|
|
|
|
rv = read(fd, buf, sizeof buf);
|
|
if (rv == 0)
|
|
break;
|
|
if (rv < 0) {
|
|
maybe_warn("read from fd %d", fd);
|
|
break;
|
|
}
|
|
infile_newdata(rv);
|
|
|
|
if (write_retry(STDOUT_FILENO, buf, rv) != rv) {
|
|
maybe_warn("write to stdout");
|
|
break;
|
|
}
|
|
in_tot += rv;
|
|
}
|
|
|
|
if (gsizep)
|
|
*gsizep = in_tot;
|
|
return (in_tot);
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
handle_stdin(void)
|
|
{
|
|
struct stat isb;
|
|
unsigned char header1[4];
|
|
size_t in_size;
|
|
off_t usize, gsize;
|
|
enum filetype method;
|
|
ssize_t bytes_read;
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
FILE *in;
|
|
#endif
|
|
|
|
#ifndef SMALL
|
|
if (fflag == 0 && lflag == 0 && isatty(STDIN_FILENO)) {
|
|
maybe_warnx("standard input is a terminal -- ignoring");
|
|
goto out;
|
|
}
|
|
#endif
|
|
|
|
if (fstat(STDIN_FILENO, &isb) < 0) {
|
|
maybe_warn("fstat");
|
|
goto out;
|
|
}
|
|
if (S_ISREG(isb.st_mode))
|
|
in_size = isb.st_size;
|
|
else
|
|
in_size = 0;
|
|
infile_set("(stdin)", in_size);
|
|
|
|
if (lflag) {
|
|
print_list(STDIN_FILENO, in_size, infile, isb.st_mtime);
|
|
goto out;
|
|
}
|
|
|
|
bytes_read = read_retry(STDIN_FILENO, header1, sizeof header1);
|
|
if (bytes_read == -1) {
|
|
maybe_warn("can't read stdin");
|
|
goto out;
|
|
} else if (bytes_read != sizeof(header1)) {
|
|
maybe_warnx("(stdin): unexpected end of file");
|
|
goto out;
|
|
}
|
|
|
|
method = file_gettype(header1);
|
|
switch (method) {
|
|
default:
|
|
#ifndef SMALL
|
|
if (fflag == 0) {
|
|
maybe_warnx("unknown compression format");
|
|
goto out;
|
|
}
|
|
usize = cat_fd(header1, sizeof header1, &gsize, STDIN_FILENO);
|
|
break;
|
|
#endif
|
|
case FT_GZIP:
|
|
usize = gz_uncompress(STDIN_FILENO, STDOUT_FILENO,
|
|
(char *)header1, sizeof header1, &gsize, "(stdin)");
|
|
break;
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
case FT_BZIP2:
|
|
usize = unbzip2(STDIN_FILENO, STDOUT_FILENO,
|
|
(char *)header1, sizeof header1, &gsize);
|
|
break;
|
|
#endif
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
case FT_Z:
|
|
if ((in = zdopen(STDIN_FILENO)) == NULL) {
|
|
maybe_warnx("zopen of stdin");
|
|
goto out;
|
|
}
|
|
|
|
usize = zuncompress(in, stdout, (char *)header1,
|
|
sizeof header1, &gsize);
|
|
fclose(in);
|
|
break;
|
|
#endif
|
|
#ifndef NO_PACK_SUPPORT
|
|
case FT_PACK:
|
|
usize = unpack(STDIN_FILENO, STDOUT_FILENO,
|
|
(char *)header1, sizeof header1, &gsize);
|
|
break;
|
|
#endif
|
|
#ifndef NO_XZ_SUPPORT
|
|
case FT_XZ:
|
|
usize = unxz(STDIN_FILENO, STDOUT_FILENO,
|
|
(char *)header1, sizeof header1, &gsize);
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
#ifndef SMALL
|
|
if (vflag && !tflag && usize != -1 && gsize != -1)
|
|
print_verbage(NULL, NULL, usize, gsize);
|
|
if (vflag && tflag)
|
|
print_test("(stdin)", usize != -1);
|
|
#else
|
|
(void)&usize;
|
|
#endif
|
|
|
|
out:
|
|
infile_clear();
|
|
}
|
|
|
|
static void
|
|
handle_stdout(void)
|
|
{
|
|
off_t gsize;
|
|
#ifndef SMALL
|
|
off_t usize;
|
|
struct stat sb;
|
|
time_t systime;
|
|
uint32_t mtime;
|
|
int ret;
|
|
|
|
infile_set("(stdout)", 0);
|
|
|
|
if (fflag == 0 && isatty(STDOUT_FILENO)) {
|
|
maybe_warnx("standard output is a terminal -- ignoring");
|
|
return;
|
|
}
|
|
|
|
/* If stdin is a file use its mtime, otherwise use current time */
|
|
ret = fstat(STDIN_FILENO, &sb);
|
|
if (ret < 0) {
|
|
maybe_warn("Can't stat stdin");
|
|
return;
|
|
}
|
|
|
|
if (S_ISREG(sb.st_mode)) {
|
|
infile_set("(stdout)", sb.st_size);
|
|
mtime = (uint32_t)sb.st_mtime;
|
|
} else {
|
|
systime = time(NULL);
|
|
if (systime == -1) {
|
|
maybe_warn("time");
|
|
return;
|
|
}
|
|
mtime = (uint32_t)systime;
|
|
}
|
|
|
|
usize =
|
|
#endif
|
|
gz_compress(STDIN_FILENO, STDOUT_FILENO, &gsize, "", mtime);
|
|
#ifndef SMALL
|
|
if (vflag && !tflag && usize != -1 && gsize != -1)
|
|
print_verbage(NULL, NULL, usize, gsize);
|
|
#endif
|
|
}
|
|
|
|
/* do what is asked for, for the path name */
|
|
static void
|
|
handle_pathname(char *path)
|
|
{
|
|
char *opath = path, *s = NULL;
|
|
ssize_t len;
|
|
int slen;
|
|
struct stat sb;
|
|
|
|
/* check for stdout/stdin */
|
|
if (path[0] == '-' && path[1] == '\0') {
|
|
if (dflag)
|
|
handle_stdin();
|
|
else
|
|
handle_stdout();
|
|
return;
|
|
}
|
|
|
|
retry:
|
|
if (stat(path, &sb) != 0 || (fflag == 0 && cflag == 0 &&
|
|
lstat(path, &sb) != 0)) {
|
|
/* lets try <path>.gz if we're decompressing */
|
|
if (dflag && s == NULL && errno == ENOENT) {
|
|
len = strlen(path);
|
|
slen = suffixes[0].ziplen;
|
|
s = malloc(len + slen + 1);
|
|
if (s == NULL)
|
|
maybe_err("malloc");
|
|
memcpy(s, path, len);
|
|
memcpy(s + len, suffixes[0].zipped, slen + 1);
|
|
path = s;
|
|
goto retry;
|
|
}
|
|
maybe_warn("can't stat: %s", opath);
|
|
goto out;
|
|
}
|
|
|
|
if (S_ISDIR(sb.st_mode)) {
|
|
#ifndef SMALL
|
|
if (rflag)
|
|
handle_dir(path);
|
|
else
|
|
#endif
|
|
maybe_warnx("%s is a directory", path);
|
|
goto out;
|
|
}
|
|
|
|
if (S_ISREG(sb.st_mode))
|
|
handle_file(path, &sb);
|
|
else
|
|
maybe_warnx("%s is not a regular file", path);
|
|
|
|
out:
|
|
if (s)
|
|
free(s);
|
|
}
|
|
|
|
/* compress/decompress a file */
|
|
static void
|
|
handle_file(char *file, struct stat *sbp)
|
|
{
|
|
off_t usize, gsize;
|
|
char outfile[PATH_MAX];
|
|
|
|
infile_set(file, sbp->st_size);
|
|
if (dflag) {
|
|
usize = file_uncompress(file, outfile, sizeof(outfile));
|
|
#ifndef SMALL
|
|
if (vflag && tflag)
|
|
print_test(file, usize != -1);
|
|
#endif
|
|
if (usize == -1)
|
|
return;
|
|
gsize = sbp->st_size;
|
|
} else {
|
|
gsize = file_compress(file, outfile, sizeof(outfile));
|
|
if (gsize == -1)
|
|
return;
|
|
usize = sbp->st_size;
|
|
}
|
|
infile_clear();
|
|
|
|
#ifndef SMALL
|
|
if (vflag && !tflag)
|
|
print_verbage(file, (cflag) ? NULL : outfile, usize, gsize);
|
|
#endif
|
|
}
|
|
|
|
#ifndef SMALL
|
|
/* this is used with -r to recursively descend directories */
|
|
static void
|
|
handle_dir(char *dir)
|
|
{
|
|
char *path_argv[2];
|
|
FTS *fts;
|
|
FTSENT *entry;
|
|
|
|
path_argv[0] = dir;
|
|
path_argv[1] = 0;
|
|
fts = fts_open(path_argv, FTS_PHYSICAL | FTS_NOCHDIR, NULL);
|
|
if (fts == NULL) {
|
|
warn("couldn't fts_open %s", dir);
|
|
return;
|
|
}
|
|
|
|
while ((entry = fts_read(fts))) {
|
|
switch(entry->fts_info) {
|
|
case FTS_D:
|
|
case FTS_DP:
|
|
continue;
|
|
|
|
case FTS_DNR:
|
|
case FTS_ERR:
|
|
case FTS_NS:
|
|
maybe_warn("%s", entry->fts_path);
|
|
continue;
|
|
case FTS_F:
|
|
handle_file(entry->fts_path, entry->fts_statp);
|
|
}
|
|
}
|
|
(void)fts_close(fts);
|
|
}
|
|
#endif
|
|
|
|
/* print a ratio - size reduction as a fraction of uncompressed size */
|
|
static void
|
|
print_ratio(off_t in, off_t out, FILE *where)
|
|
{
|
|
int percent10; /* 10 * percent */
|
|
off_t diff;
|
|
char buff[8];
|
|
int len;
|
|
|
|
diff = in - out/2;
|
|
if (in == 0 && out == 0)
|
|
percent10 = 0;
|
|
else if (diff < 0)
|
|
/*
|
|
* Output is more than double size of input! print -99.9%
|
|
* Quite possibly we've failed to get the original size.
|
|
*/
|
|
percent10 = -999;
|
|
else {
|
|
/*
|
|
* We only need 12 bits of result from the final division,
|
|
* so reduce the values until a 32bit division will suffice.
|
|
*/
|
|
while (in > 0x100000) {
|
|
diff >>= 1;
|
|
in >>= 1;
|
|
}
|
|
if (in != 0)
|
|
percent10 = ((u_int)diff * 2000) / (u_int)in - 1000;
|
|
else
|
|
percent10 = 0;
|
|
}
|
|
|
|
len = snprintf(buff, sizeof buff, "%2.2d.", percent10);
|
|
/* Move the '.' to before the last digit */
|
|
buff[len - 1] = buff[len - 2];
|
|
buff[len - 2] = '.';
|
|
fprintf(where, "%5s%%", buff);
|
|
}
|
|
|
|
#ifndef SMALL
|
|
/* print compression statistics, and the new name (if there is one!) */
|
|
static void
|
|
print_verbage(const char *file, const char *nfile, off_t usize, off_t gsize)
|
|
{
|
|
if (file)
|
|
fprintf(stderr, "%s:%s ", file,
|
|
strlen(file) < 7 ? "\t\t" : "\t");
|
|
print_ratio(usize, gsize, stderr);
|
|
if (nfile)
|
|
fprintf(stderr, " -- replaced with %s", nfile);
|
|
fprintf(stderr, "\n");
|
|
fflush(stderr);
|
|
}
|
|
|
|
/* print test results */
|
|
static void
|
|
print_test(const char *file, int ok)
|
|
{
|
|
|
|
if (exit_value == 0 && ok == 0)
|
|
exit_value = 1;
|
|
fprintf(stderr, "%s:%s %s\n", file,
|
|
strlen(file) < 7 ? "\t\t" : "\t", ok ? "OK" : "NOT OK");
|
|
fflush(stderr);
|
|
}
|
|
#endif
|
|
|
|
/* print a file's info ala --list */
|
|
/* eg:
|
|
compressed uncompressed ratio uncompressed_name
|
|
354841 1679360 78.8% /usr/pkgsrc/distfiles/libglade-2.0.1.tar
|
|
*/
|
|
static void
|
|
print_list(int fd, off_t out, const char *outfile, time_t ts)
|
|
{
|
|
static int first = 1;
|
|
#ifndef SMALL
|
|
static off_t in_tot, out_tot;
|
|
uint32_t crc = 0;
|
|
#endif
|
|
off_t in = 0, rv;
|
|
|
|
if (first) {
|
|
#ifndef SMALL
|
|
if (vflag)
|
|
printf("method crc date time ");
|
|
#endif
|
|
if (qflag == 0)
|
|
printf(" compressed uncompressed "
|
|
"ratio uncompressed_name\n");
|
|
}
|
|
first = 0;
|
|
|
|
/* print totals? */
|
|
#ifndef SMALL
|
|
if (fd == -1) {
|
|
in = in_tot;
|
|
out = out_tot;
|
|
} else
|
|
#endif
|
|
{
|
|
/* read the last 4 bytes - this is the uncompressed size */
|
|
rv = lseek(fd, (off_t)(-8), SEEK_END);
|
|
if (rv != -1) {
|
|
unsigned char buf[8];
|
|
uint32_t usize;
|
|
|
|
rv = read(fd, (char *)buf, sizeof(buf));
|
|
if (rv == -1)
|
|
maybe_warn("read of uncompressed size");
|
|
else if (rv != sizeof(buf))
|
|
maybe_warnx("read of uncompressed size");
|
|
|
|
else {
|
|
usize = buf[4] | buf[5] << 8 |
|
|
buf[6] << 16 | buf[7] << 24;
|
|
in = (off_t)usize;
|
|
#ifndef SMALL
|
|
crc = buf[0] | buf[1] << 8 |
|
|
buf[2] << 16 | buf[3] << 24;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifndef SMALL
|
|
if (vflag && fd == -1)
|
|
printf(" ");
|
|
else if (vflag) {
|
|
char *date = ctime(&ts);
|
|
|
|
/* skip the day, 1/100th second, and year */
|
|
date += 4;
|
|
date[12] = 0;
|
|
printf("%5s %08x %11s ", "defla"/*XXX*/, crc, date);
|
|
}
|
|
in_tot += in;
|
|
out_tot += out;
|
|
#else
|
|
(void)&ts; /* XXX */
|
|
#endif
|
|
printf("%12llu %12llu ", (unsigned long long)out, (unsigned long long)in);
|
|
print_ratio(in, out, stdout);
|
|
printf(" %s\n", outfile);
|
|
}
|
|
|
|
/* display the usage of NetBSD gzip */
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr, "%s\n", gzip_version);
|
|
fprintf(stderr,
|
|
#ifdef SMALL
|
|
"usage: %s [-" OPT_LIST "] [<file> [<file> ...]]\n",
|
|
#else
|
|
"usage: %s [-123456789acdfhklLNnqrtVv] [-S .suffix] [<file> [<file> ...]]\n"
|
|
" -1 --fast fastest (worst) compression\n"
|
|
" -2 .. -8 set compression level\n"
|
|
" -9 --best best (slowest) compression\n"
|
|
" -c --stdout write to stdout, keep original files\n"
|
|
" --to-stdout\n"
|
|
" -d --decompress uncompress files\n"
|
|
" --uncompress\n"
|
|
" -f --force force overwriting & compress links\n"
|
|
" -h --help display this help\n"
|
|
" -k --keep don't delete input files during operation\n"
|
|
" -l --list list compressed file contents\n"
|
|
" -N --name save or restore original file name and time stamp\n"
|
|
" -n --no-name don't save original file name or time stamp\n"
|
|
" -q --quiet output no warnings\n"
|
|
" -r --recursive recursively compress files in directories\n"
|
|
" -S .suf use suffix .suf instead of .gz\n"
|
|
" --suffix .suf\n"
|
|
" -t --test test compressed file\n"
|
|
" -V --version display program version\n"
|
|
" -v --verbose print extra statistics\n",
|
|
#endif
|
|
getprogname());
|
|
exit(0);
|
|
}
|
|
|
|
#ifndef SMALL
|
|
/* display the license information of FreeBSD gzip */
|
|
static void
|
|
display_license(void)
|
|
{
|
|
|
|
fprintf(stderr, "%s (based on NetBSD gzip 20150113)\n", gzip_version);
|
|
fprintf(stderr, "%s\n", gzip_copyright);
|
|
exit(0);
|
|
}
|
|
#endif
|
|
|
|
/* display the version of NetBSD gzip */
|
|
static void
|
|
display_version(void)
|
|
{
|
|
|
|
fprintf(stderr, "%s\n", gzip_version);
|
|
exit(0);
|
|
}
|
|
|
|
#ifndef NO_BZIP2_SUPPORT
|
|
#include "unbzip2.c"
|
|
#endif
|
|
#ifndef NO_COMPRESS_SUPPORT
|
|
#include "zuncompress.c"
|
|
#endif
|
|
#ifndef NO_PACK_SUPPORT
|
|
#include "unpack.c"
|
|
#endif
|
|
#ifndef NO_XZ_SUPPORT
|
|
#include "unxz.c"
|
|
#endif
|
|
|
|
static ssize_t
|
|
read_retry(int fd, void *buf, size_t sz)
|
|
{
|
|
char *cp = buf;
|
|
size_t left = MIN(sz, (size_t) SSIZE_MAX);
|
|
|
|
while (left > 0) {
|
|
ssize_t ret;
|
|
|
|
ret = read(fd, cp, left);
|
|
if (ret == -1) {
|
|
return ret;
|
|
} else if (ret == 0) {
|
|
break; /* EOF */
|
|
}
|
|
cp += ret;
|
|
left -= ret;
|
|
}
|
|
|
|
return sz - left;
|
|
}
|
|
|
|
static ssize_t
|
|
write_retry(int fd, const void *buf, size_t sz)
|
|
{
|
|
const char *cp = buf;
|
|
size_t left = MIN(sz, (size_t) SSIZE_MAX);
|
|
|
|
while (left > 0) {
|
|
ssize_t ret;
|
|
|
|
ret = write(fd, cp, left);
|
|
if (ret == -1) {
|
|
return ret;
|
|
} else if (ret == 0) {
|
|
abort(); /* Can't happen */
|
|
}
|
|
cp += ret;
|
|
left -= ret;
|
|
}
|
|
|
|
return sz - left;
|
|
}
|