156 lines
4.1 KiB
C
Executable File
156 lines
4.1 KiB
C
Executable File
/*
|
|
* Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that: (1) source code distributions
|
|
* retain the above copyright notice and this paragraph in its entirety, (2)
|
|
* distributions including binary code include the above copyright notice and
|
|
* this paragraph in its entirety in the documentation or other materials
|
|
* provided with the distribution, and (3) all advertising materials mentioning
|
|
* features or use of this software display the following acknowledgement:
|
|
* ``This product includes software developed by the University of California,
|
|
* Lawrence Berkeley Laboratory and its contributors.'' 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* Format and print trivial file transfer protocol packets.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] _U_ =
|
|
"@(#) $Header: /Users/olsen/Code/cvs2svn-2010/os4-cvs-repository/contrib/roadshow/client-software/tcpdump-3.8.1/print-tftp.c,v 1.2 2004-09-22 15:40:56 olsen Exp $ (LBL)";
|
|
#endif
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <tcpdump-stdinc.h>
|
|
|
|
#ifdef SEGSIZE
|
|
#undef SEGSIZE /* SINIX sucks */
|
|
#endif
|
|
#include <arpa/tftp.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
#include "extract.h"
|
|
|
|
/* op code to string mapping */
|
|
static struct tok op2str[] = {
|
|
{ RRQ, "RRQ" }, /* read request */
|
|
{ WRQ, "WRQ" }, /* write request */
|
|
{ DATA, "DATA" }, /* data packet */
|
|
{ ACK, "ACK" }, /* acknowledgement */
|
|
{ ERROR, "ERROR" }, /* error code */
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/* error code to string mapping */
|
|
static struct tok err2str[] = {
|
|
{ EUNDEF, "EUNDEF" }, /* not defined */
|
|
{ ENOTFOUND, "ENOTFOUND" }, /* file not found */
|
|
{ EACCESS, "EACCESS" }, /* access violation */
|
|
{ ENOSPACE, "ENOSPACE" }, /* disk full or allocation exceeded */
|
|
{ EBADOP, "EBADOP" }, /* illegal TFTP operation */
|
|
{ EBADID, "EBADID" }, /* unknown transfer ID */
|
|
{ EEXISTS, "EEXISTS" }, /* file already exists */
|
|
{ ENOUSER, "ENOUSER" }, /* no such user */
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/*
|
|
* Print trivial file transfer program requests
|
|
*/
|
|
void
|
|
tftp_print(register const u_char *bp, u_int length)
|
|
{
|
|
register const struct tftphdr *tp;
|
|
register const char *cp;
|
|
register const u_char *p;
|
|
register int opcode, i;
|
|
static char tstr[] = " [|tftp]";
|
|
|
|
tp = (const struct tftphdr *)bp;
|
|
|
|
/* Print length */
|
|
printf(" %d", length);
|
|
|
|
/* Print tftp request type */
|
|
TCHECK(tp->th_opcode);
|
|
opcode = EXTRACT_16BITS(&tp->th_opcode);
|
|
cp = tok2str(op2str, "tftp-#%d", opcode);
|
|
printf(" %s", cp);
|
|
/* Bail if bogus opcode */
|
|
if (*cp == 't')
|
|
return;
|
|
|
|
switch (opcode) {
|
|
|
|
case RRQ:
|
|
case WRQ:
|
|
/*
|
|
* XXX Not all arpa/tftp.h's specify th_stuff as any
|
|
* array; use address of th_block instead
|
|
*/
|
|
#ifdef notdef
|
|
p = (u_char *)tp->th_stuff;
|
|
#else
|
|
p = (u_char *)&tp->th_block;
|
|
#endif
|
|
fputs(" \"", stdout);
|
|
i = fn_print(p, snapend);
|
|
putchar('"');
|
|
|
|
/* Print the mode and any options */
|
|
while ((p = (const u_char *)strchr((const char *)p, '\0')) != NULL) {
|
|
if (length <= (u_int)(p - (const u_char *)&tp->th_block))
|
|
break;
|
|
p++;
|
|
if (*p != '\0') {
|
|
putchar(' ');
|
|
fn_print(p, snapend);
|
|
}
|
|
}
|
|
|
|
if (i)
|
|
goto trunc;
|
|
break;
|
|
|
|
case ACK:
|
|
case DATA:
|
|
TCHECK(tp->th_block);
|
|
printf(" block %d", EXTRACT_16BITS(&tp->th_block));
|
|
break;
|
|
|
|
case ERROR:
|
|
/* Print error code string */
|
|
TCHECK(tp->th_code);
|
|
printf(" %s ", tok2str(err2str, "tftp-err-#%d \"",
|
|
EXTRACT_16BITS(&tp->th_code)));
|
|
/* Print error message string */
|
|
i = fn_print((const u_char *)tp->th_data, snapend);
|
|
putchar('"');
|
|
if (i)
|
|
goto trunc;
|
|
break;
|
|
|
|
default:
|
|
/* We shouldn't get here */
|
|
printf("(unknown #%d)", opcode);
|
|
break;
|
|
}
|
|
return;
|
|
trunc:
|
|
fputs(tstr, stdout);
|
|
return;
|
|
}
|