1994-05-27 12:33:43 +00:00
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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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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#ifndef lint
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1997-07-10 06:48:24 +00:00
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#if 0
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1994-05-27 12:33:43 +00:00
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static char sccsid[] = "@(#)display.c 8.1 (Berkeley) 6/6/93";
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1997-07-10 06:48:24 +00:00
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#endif
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static const char rcsid[] =
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1998-12-13 06:40:18 +00:00
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"$Id: display.c,v 1.2 1997/07/10 06:48:12 charnier Exp $";
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1994-05-27 12:33:43 +00:00
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <ctype.h>
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1997-07-10 06:48:24 +00:00
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#include <err.h>
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1994-05-27 12:33:43 +00:00
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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1997-07-10 06:48:24 +00:00
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#include <unistd.h>
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1994-05-27 12:33:43 +00:00
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#include "hexdump.h"
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enum _vflag vflag = FIRST;
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static off_t address; /* address/offset in stream */
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static off_t eaddress; /* end address */
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static inline void print __P((PR *, u_char *));
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void
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display()
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{
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extern FU *endfu;
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register FS *fs;
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register FU *fu;
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register PR *pr;
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register int cnt;
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register u_char *bp;
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off_t saveaddress;
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u_char savech, *savebp;
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while (bp = get())
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for (fs = fshead, savebp = bp, saveaddress = address; fs;
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fs = fs->nextfs, bp = savebp, address = saveaddress)
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for (fu = fs->nextfu; fu; fu = fu->nextfu) {
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if (fu->flags&F_IGNORE)
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break;
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for (cnt = fu->reps; cnt; --cnt)
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for (pr = fu->nextpr; pr; address += pr->bcnt,
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bp += pr->bcnt, pr = pr->nextpr) {
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if (eaddress && address >= eaddress &&
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!(pr->flags & (F_TEXT|F_BPAD)))
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bpad(pr);
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if (cnt == 1 && pr->nospace) {
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savech = *pr->nospace;
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*pr->nospace = '\0';
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}
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print(pr, bp);
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if (cnt == 1 && pr->nospace)
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*pr->nospace = savech;
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}
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}
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if (endfu) {
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/*
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* If eaddress not set, error or file size was multiple of
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* blocksize, and no partial block ever found.
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*/
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if (!eaddress) {
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if (!address)
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return;
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eaddress = address;
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}
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for (pr = endfu->nextpr; pr; pr = pr->nextpr)
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switch(pr->flags) {
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case F_ADDRESS:
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(void)printf(pr->fmt, (quad_t)eaddress);
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break;
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case F_TEXT:
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(void)printf(pr->fmt);
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break;
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}
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}
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}
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static inline void
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print(pr, bp)
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PR *pr;
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u_char *bp;
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{
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double f8;
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float f4;
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int16_t s2;
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int8_t s8;
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int32_t s4;
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u_int16_t u2;
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u_int32_t u4;
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u_int64_t u8;
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switch(pr->flags) {
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case F_ADDRESS:
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(void)printf(pr->fmt, (quad_t)address);
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break;
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case F_BPAD:
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(void)printf(pr->fmt, "");
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break;
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case F_C:
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conv_c(pr, bp);
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break;
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case F_CHAR:
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(void)printf(pr->fmt, *bp);
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break;
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case F_DBL:
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switch(pr->bcnt) {
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case 4:
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bcopy(bp, &f4, sizeof(f4));
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(void)printf(pr->fmt, f4);
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break;
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case 8:
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bcopy(bp, &f8, sizeof(f8));
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(void)printf(pr->fmt, f8);
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break;
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}
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break;
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case F_INT:
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switch(pr->bcnt) {
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case 1:
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(void)printf(pr->fmt, (quad_t)*bp);
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break;
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case 2:
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bcopy(bp, &s2, sizeof(s2));
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(void)printf(pr->fmt, (quad_t)s2);
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break;
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case 4:
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bcopy(bp, &s4, sizeof(s4));
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(void)printf(pr->fmt, (quad_t)s4);
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break;
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case 8:
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bcopy(bp, &s8, sizeof(s8));
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(void)printf(pr->fmt, s8);
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break;
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}
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break;
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case F_P:
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(void)printf(pr->fmt, isprint(*bp) ? *bp : '.');
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break;
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case F_STR:
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(void)printf(pr->fmt, (char *)bp);
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break;
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case F_TEXT:
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(void)printf(pr->fmt);
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break;
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case F_U:
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conv_u(pr, bp);
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break;
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case F_UINT:
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switch(pr->bcnt) {
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case 1:
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(void)printf(pr->fmt, (u_quad_t)*bp);
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break;
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case 2:
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bcopy(bp, &u2, sizeof(u2));
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(void)printf(pr->fmt, (u_quad_t)u2);
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break;
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case 4:
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bcopy(bp, &u4, sizeof(u4));
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(void)printf(pr->fmt, (u_quad_t)u4);
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break;
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case 8:
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bcopy(bp, &u8, sizeof(u8));
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(void)printf(pr->fmt, u8);
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break;
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}
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break;
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}
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}
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void
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bpad(pr)
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PR *pr;
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{
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static char *spec = " -0+#";
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register char *p1, *p2;
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/*
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* Remove all conversion flags; '-' is the only one valid
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* with %s, and it's not useful here.
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*/
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pr->flags = F_BPAD;
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pr->cchar[0] = 's';
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pr->cchar[1] = '\0';
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for (p1 = pr->fmt; *p1 != '%'; ++p1);
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for (p2 = ++p1; *p1 && index(spec, *p1); ++p1);
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while (*p2++ = *p1++);
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}
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static char **_argv;
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u_char *
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get()
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{
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|
extern enum _vflag vflag;
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extern int length;
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static int ateof = 1;
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static u_char *curp, *savp;
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register int n;
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int need, nread;
|
1998-12-13 06:40:18 +00:00
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int valid_save = 0;
|
1994-05-27 12:33:43 +00:00
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u_char *tmpp;
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if (!curp) {
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curp = emalloc(blocksize);
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savp = emalloc(blocksize);
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} else {
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tmpp = curp;
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curp = savp;
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savp = tmpp;
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address += blocksize;
|
1998-12-13 06:40:18 +00:00
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valid_save = 1;
|
1994-05-27 12:33:43 +00:00
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}
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for (need = blocksize, nread = 0;;) {
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|
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/*
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|
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* if read the right number of bytes, or at EOF for one file,
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|
* and no other files are available, zero-pad the rest of the
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|
* block and set the end flag.
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*/
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|
|
if (!length || ateof && !next((char **)NULL)) {
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|
|
if (need == blocksize)
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|
|
return((u_char *)NULL);
|
1998-12-13 06:40:18 +00:00
|
|
|
if (vflag != ALL &&
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|
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valid_save &&
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|
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bcmp(curp, savp, nread) == 0) {
|
1994-05-27 12:33:43 +00:00
|
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if (vflag != DUP)
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(void)printf("*\n");
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|
|
return((u_char *)NULL);
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|
|
}
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|
|
bzero((char *)curp + nread, need);
|
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|
|
eaddress = address + nread;
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|
|
return(curp);
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|
|
|
}
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|
|
n = fread((char *)curp + nread, sizeof(u_char),
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|
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length == -1 ? need : MIN(length, need), stdin);
|
|
|
|
if (!n) {
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|
|
|
if (ferror(stdin))
|
1997-07-10 06:48:24 +00:00
|
|
|
warn("%s", _argv[-1]);
|
1994-05-27 12:33:43 +00:00
|
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ateof = 1;
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|
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continue;
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|
|
|
}
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ateof = 0;
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|
|
if (length != -1)
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|
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length -= n;
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|
|
if (!(need -= n)) {
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|
|
|
if (vflag == ALL || vflag == FIRST ||
|
1998-12-13 06:40:18 +00:00
|
|
|
valid_save == 0 ||
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|
|
|
bcmp(curp, savp, blocksize) != 0) {
|
1994-05-27 12:33:43 +00:00
|
|
|
if (vflag == DUP || vflag == FIRST)
|
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|
|
vflag = WAIT;
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|
|
return(curp);
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|
|
|
}
|
|
|
|
if (vflag == WAIT)
|
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|
|
(void)printf("*\n");
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|
|
vflag = DUP;
|
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|
|
address += blocksize;
|
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|
|
need = blocksize;
|
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|
|
nread = 0;
|
|
|
|
}
|
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|
|
else
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|
|
nread += n;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
extern off_t skip; /* bytes to skip */
|
|
|
|
|
|
|
|
int
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|
|
|
next(argv)
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|
|
|
char **argv;
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|
|
|
{
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|
|
|
extern int exitval;
|
|
|
|
static int done;
|
|
|
|
int statok;
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|
|
|
|
|
|
|
if (argv) {
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|
|
|
_argv = argv;
|
|
|
|
return(1);
|
|
|
|
}
|
|
|
|
for (;;) {
|
|
|
|
if (*_argv) {
|
|
|
|
if (!(freopen(*_argv, "r", stdin))) {
|
1997-07-10 06:48:24 +00:00
|
|
|
warn("%s", *_argv);
|
1994-05-27 12:33:43 +00:00
|
|
|
exitval = 1;
|
|
|
|
++_argv;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
statok = done = 1;
|
|
|
|
} else {
|
|
|
|
if (done++)
|
|
|
|
return(0);
|
|
|
|
statok = 0;
|
|
|
|
}
|
|
|
|
if (skip)
|
|
|
|
doskip(statok ? *_argv : "stdin", statok);
|
|
|
|
if (*_argv)
|
|
|
|
++_argv;
|
|
|
|
if (!skip)
|
|
|
|
return(1);
|
|
|
|
}
|
|
|
|
/* NOTREACHED */
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
doskip(fname, statok)
|
|
|
|
char *fname;
|
|
|
|
int statok;
|
|
|
|
{
|
|
|
|
register int cnt;
|
|
|
|
struct stat sb;
|
|
|
|
|
|
|
|
if (statok) {
|
|
|
|
if (fstat(fileno(stdin), &sb))
|
1997-07-10 06:48:24 +00:00
|
|
|
err(1, "%s", fname);
|
1994-05-27 12:33:43 +00:00
|
|
|
if (S_ISREG(sb.st_mode) && skip >= sb.st_size) {
|
|
|
|
address += sb.st_size;
|
|
|
|
skip -= sb.st_size;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (S_ISREG(sb.st_mode)) {
|
|
|
|
if (fseek(stdin, skip, SEEK_SET))
|
1997-07-10 06:48:24 +00:00
|
|
|
err(1, "%s", fname);
|
1994-05-27 12:33:43 +00:00
|
|
|
address += skip;
|
|
|
|
skip = 0;
|
|
|
|
} else {
|
|
|
|
for (cnt = 0; cnt < skip; ++cnt)
|
|
|
|
if (getchar() == EOF)
|
|
|
|
break;
|
|
|
|
address += cnt;
|
|
|
|
skip -= cnt;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void *
|
|
|
|
emalloc(size)
|
|
|
|
int size;
|
|
|
|
{
|
|
|
|
void *p;
|
|
|
|
|
|
|
|
if ((p = malloc((u_int)size)) == NULL)
|
|
|
|
nomem();
|
|
|
|
bzero(p, size);
|
|
|
|
return(p);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
nomem()
|
|
|
|
{
|
1997-07-10 06:48:24 +00:00
|
|
|
err(1, NULL);
|
1994-05-27 12:33:43 +00:00
|
|
|
}
|