243e928310
Check the return value from fread() to be sure that it was successful. Reported by: Coverity CID: 1006709, 1009452 MFC after: 1 week
138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Ken Arnold.
|
|
*
|
|
* 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. 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.
|
|
*/
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1991, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static const char sccsid[] = "@(#)unstr.c 8.1 (Berkeley) 5/31/93";
|
|
#endif /* not lint */
|
|
#endif
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* This program un-does what "strfile" makes, thereby obtaining the
|
|
* original file again. This can be invoked with the name of the output
|
|
* file, the input file, or both. If invoked with only a single argument
|
|
* ending in ".dat", it is pressumed to be the input file and the output
|
|
* file will be the same stripped of the ".dat". If the single argument
|
|
* doesn't end in ".dat", then it is presumed to be the output file, and
|
|
* the input file is that name prepended by a ".dat". If both are given
|
|
* they are treated literally as the input and output files.
|
|
*
|
|
* Ken Arnold Aug 13, 1978
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/endian.h>
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "strfile.h"
|
|
|
|
static char *Infile, /* name of input file */
|
|
Datafile[MAXPATHLEN], /* name of data file */
|
|
Delimch; /* delimiter character */
|
|
|
|
static FILE *Inf, *Dataf;
|
|
|
|
static void order_unstr(STRFILE *);
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
static STRFILE tbl; /* description table */
|
|
|
|
if (argc != 2) {
|
|
fprintf(stderr, "usage: unstr datafile\n");
|
|
exit(1);
|
|
}
|
|
Infile = argv[1];
|
|
if ((size_t)snprintf(Datafile, sizeof(Datafile), "%s.dat", Infile) >=
|
|
sizeof(Datafile))
|
|
errx(1, "%s name too long", Infile);
|
|
if ((Inf = fopen(Infile, "r")) == NULL)
|
|
err(1, "%s", Infile);
|
|
if ((Dataf = fopen(Datafile, "r")) == NULL)
|
|
err(1, "%s", Datafile);
|
|
if (fread((char *)&tbl, sizeof(tbl), 1, Dataf) != 1) {
|
|
if (feof(Dataf))
|
|
errx(1, "%s read EOF", Datafile);
|
|
else
|
|
err(1, "%s read", Datafile);
|
|
}
|
|
tbl.str_version = be32toh(tbl.str_version);
|
|
tbl.str_numstr = be32toh(tbl.str_numstr);
|
|
tbl.str_longlen = be32toh(tbl.str_longlen);
|
|
tbl.str_shortlen = be32toh(tbl.str_shortlen);
|
|
tbl.str_flags = be32toh(tbl.str_flags);
|
|
if (!(tbl.str_flags & (STR_ORDERED | STR_RANDOM)))
|
|
errx(1, "nothing to do -- table in file order");
|
|
Delimch = tbl.str_delim;
|
|
order_unstr(&tbl);
|
|
fclose(Inf);
|
|
fclose(Dataf);
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
order_unstr(STRFILE *tbl)
|
|
{
|
|
uint32_t i;
|
|
char *sp;
|
|
off_t pos;
|
|
char buf[BUFSIZ];
|
|
|
|
for (i = 0; i < tbl->str_numstr; i++) {
|
|
fread(&pos, 1, sizeof(pos), Dataf);
|
|
fseeko(Inf, be64toh(pos), SEEK_SET);
|
|
if (i != 0)
|
|
printf("%c\n", Delimch);
|
|
for (;;) {
|
|
sp = fgets(buf, sizeof(buf), Inf);
|
|
if (sp == NULL || STR_ENDSTRING(sp, *tbl))
|
|
break;
|
|
else
|
|
fputs(sp, stdout);
|
|
}
|
|
}
|
|
}
|