GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/tcpdump/print-tftp.c Lines: 0 29 0.0 %
Date: 2017-11-13 Branches: 0 30 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: print-tftp.c,v 1.12 2015/11/16 00:16:39 mmcc Exp $	*/
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/*
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 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
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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: (1) source code distributions
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 * retain the above copyright notice and this paragraph in its entirety, (2)
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 * distributions including binary code include the above copyright notice and
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 * this paragraph in its entirety in the documentation or other materials
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 * provided with the distribution, and (3) all advertising materials mentioning
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 * features or use of this software display the following acknowledgement:
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 * ``This product includes software developed by the University of California,
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 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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 * the University nor the names of its contributors may be used to endorse
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 * or promote products derived from this software without specific prior
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 * written permission.
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 *
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 * Format and print trivial file transfer protocol packets.
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 */
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#include <sys/time.h>
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#include <netinet/in.h>
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#ifdef SEGSIZE
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#undef SEGSIZE					/* SINIX sucks */
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#endif
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#include <arpa/tftp.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include "interface.h"
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#include "addrtoname.h"
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/* op code to string mapping */
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static struct tok op2str[] = {
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	{ RRQ,		"RRQ" },	/* read request */
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	{ WRQ,		"WRQ" },	/* write request */
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	{ DATA,		"DATA" },	/* data packet */
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	{ ACK,		"ACK" },	/* acknowledgement */
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	{ ERROR,	"ERROR" },	/* error code */
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	{ 0,		NULL }
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};
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/* error code to string mapping */
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static struct tok err2str[] = {
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	{ EUNDEF,	"EUNDEF" },	/* not defined */
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	{ ENOTFOUND,	"ENOTFOUND" },	/* file not found */
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	{ EACCESS,	"EACCESS" },	/* access violation */
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	{ ENOSPACE,	"ENOSPACE" },	/* disk full or allocation exceeded */
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	{ EBADOP,	"EBADOP" },	/* illegal TFTP operation */
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	{ EBADID,	"EBADID" },	/* unknown transfer ID */
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	{ EEXISTS,	"EEXISTS" },	/* file already exists */
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	{ ENOUSER,	"ENOUSER" },	/* no such user */
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	{ 0,		NULL }
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};
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/*
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 * Print trivial file transfer program requests
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 */
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void
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tftp_print(const u_char *bp, u_int length)
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{
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	const struct tftphdr *tp;
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	const char *cp;
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	const u_char *p;
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	int opcode, i;
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	static char tstr[] = " [|tftp]";
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	tp = (const struct tftphdr *)bp;
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	/* Print length */
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	printf(" %d", length);
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	/* Print tftp request type */
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	TCHECK(tp->th_opcode);
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	opcode = ntohs(tp->th_opcode);
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	cp = tok2str(op2str, "tftp-#%d", opcode);
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	printf(" %s", cp);
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	/* Bail if bogus opcode */
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	if (*cp == 't')
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		return;
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	switch (opcode) {
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	case RRQ:
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	case WRQ:
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		/*
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		 * XXX Not all arpa/tftp.h's specify th_stuff as any
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		 * array; use address of th_block instead
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		 */
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#ifdef notdef
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		p = (u_char *)tp->th_stuff;
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#else
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		p = (u_char *)&tp->th_block;
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#endif
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		fputs(" \"", stdout);
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		i = fn_print(p, snapend);
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		putchar('"');
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		if (i)
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			goto trunc;
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		break;
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	case ACK:
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	case DATA:
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		TCHECK(tp->th_block);
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		printf(" block %d", ntohs(tp->th_block));
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		break;
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	case ERROR:
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		/* Print error code string */
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		TCHECK(tp->th_code);
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		printf(" %s ", tok2str(err2str, "tftp-err-#%d \"",
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				       ntohs(tp->th_code)));
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		/* Print error message string */
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		putchar('"');
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		i = fn_print((const u_char *)tp->th_data, snapend);
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		putchar('"');
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		if (i)
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			goto trunc;
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		break;
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	default:
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		/* We shouldn't get here */
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		printf("(unknown #%d)", opcode);
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		break;
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	}
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	return;
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trunc:
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	fputs(tstr, stdout);
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	return;
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}