[dragonfly.git] / contrib / tcpdump / print-tftp.c

/*
 * 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: /tcpdump/master/tcpdump/print-tftp.c,v 1.37.2.1 2007/09/14 01:03:12 guy Exp $ (LBL)";
#endif

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <tcpdump-stdinc.h>

#ifdef SEGSIZE
#undef SEGSIZE					/* SINIX sucks */
#endif

#include <stdio.h>
#include <string.h>

#include "interface.h"
#include "addrtoname.h"
#include "extract.h"
#include "tftp.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 */
	{ OACK,		"OACK" },	/* option acknowledgement */
	{ 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:
	case OACK:
		/*
		 * 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
		putchar(' ');
		/* Print filename or first option */
		if (opcode != OACK)
			putchar('"');
		i = fn_print(p, snapend);
		if (opcode != OACK)
			putchar('"');

		/* Print the mode (RRQ and WRQ only) 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;
}
Commit	Line	Data
c8cf0f94 PA	1	/*
	2	* Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that: (1) source code distributions
	7	* retain the above copyright notice and this paragraph in its entirety, (2)
	8	* distributions including binary code include the above copyright notice and
	9	* this paragraph in its entirety in the documentation or other materials
	10	* provided with the distribution, and (3) all advertising materials mentioning
	11	* features or use of this software display the following acknowledgement:
	12	* ``This product includes software developed by the University of California,
	13	* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
	14	* the University nor the names of its contributors may be used to endorse
	15	* or promote products derived from this software without specific prior
	16	* written permission.
	17	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
	18	* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
	19	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	20	*
	21	* Format and print trivial file transfer protocol packets.
	22	*/
	23
	24	#ifndef lint
	25	static const char rcsid[] _U_ =
825e8fa1	26	"@(#) $Header: /tcpdump/master/tcpdump/print-tftp.c,v 1.37.2.1 2007/09/14 01:03:12 guy Exp $ (LBL)";
c8cf0f94 PA	27	#endif
	28
	29	#ifdef HAVE_CONFIG_H
	30	#include "config.h"
	31	#endif
	32
	33	#include <tcpdump-stdinc.h>
	34
	35	#ifdef SEGSIZE
	36	#undef SEGSIZE /* SINIX sucks */
	37	#endif
c8cf0f94 PA	38
	39	#include <stdio.h>
	40	#include <string.h>
	41
	42	#include "interface.h"
	43	#include "addrtoname.h"
	44	#include "extract.h"
825e8fa1	45	#include "tftp.h"
c8cf0f94 PA	46
	47	/* op code to string mapping */
	48	static struct tok op2str[] = {
	49	{ RRQ, "RRQ" }, /* read request */
	50	{ WRQ, "WRQ" }, /* write request */
	51	{ DATA, "DATA" }, /* data packet */
	52	{ ACK, "ACK" }, /* acknowledgement */
	53	{ ERROR, "ERROR" }, /* error code */
825e8fa1	54	{ OACK, "OACK" }, /* option acknowledgement */
c8cf0f94 PA	55	{ 0, NULL }
	56	};
	57
	58	/* error code to string mapping */
	59	static struct tok err2str[] = {
	60	{ EUNDEF, "EUNDEF" }, /* not defined */
	61	{ ENOTFOUND, "ENOTFOUND" }, /* file not found */
	62	{ EACCESS, "EACCESS" }, /* access violation */
	63	{ ENOSPACE, "ENOSPACE" }, /* disk full or allocation exceeded */
	64	{ EBADOP, "EBADOP" }, /* illegal TFTP operation */
	65	{ EBADID, "EBADID" }, /* unknown transfer ID */
	66	{ EEXISTS, "EEXISTS" }, /* file already exists */
	67	{ ENOUSER, "ENOUSER" }, /* no such user */
	68	{ 0, NULL }
	69	};
	70
	71	/*
	72	* Print trivial file transfer program requests
	73	*/
	74	void
	75	tftp_print(register const u_char *bp, u_int length)
	76	{
	77	register const struct tftphdr *tp;
	78	register const char *cp;
	79	register const u_char *p;
	80	register int opcode, i;
	81	static char tstr[] = " [\|tftp]";
	82
	83	tp = (const struct tftphdr *)bp;
	84
	85	/* Print length */
	86	printf(" %d", length);
	87
	88	/* Print tftp request type */
	89	TCHECK(tp->th_opcode);
	90	opcode = EXTRACT_16BITS(&tp->th_opcode);
	91	cp = tok2str(op2str, "tftp-#%d", opcode);
	92	printf(" %s", cp);
	93	/* Bail if bogus opcode */
	94	if (*cp == 't')
	95	return;
	96
	97	switch (opcode) {
	98
	99	case RRQ:
	100	case WRQ:
825e8fa1	101	case OACK:
c8cf0f94 PA	102	/*
	103	* XXX Not all arpa/tftp.h's specify th_stuff as any
	104	* array; use address of th_block instead
	105	*/
	106	#ifdef notdef
	107	p = (u_char *)tp->th_stuff;
	108	#else
	109	p = (u_char *)&tp->th_block;
	110	#endif
825e8fa1 PA	111	putchar(' ');
	112	/* Print filename or first option */
	113	if (opcode != OACK)
	114	putchar('"');
c8cf0f94	115	i = fn_print(p, snapend);
825e8fa1 PA	116	if (opcode != OACK)
825e8fa1 PA	117	putchar('"');
c8cf0f94	118
825e8fa1	119	/* Print the mode (RRQ and WRQ only) and any options */
c8cf0f94 PA	120	while ((p = (const u_char )strchr((const char )p, '\0')) != NULL) {
	121	if (length <= (u_int)(p - (const u_char *)&tp->th_block))
	122	break;
	123	p++;
	124	if (*p != '\0') {
	125	putchar(' ');
	126	fn_print(p, snapend);
	127	}
	128	}
	129
	130	if (i)
	131	goto trunc;
	132	break;
	133
	134	case ACK:
	135	case DATA:
	136	TCHECK(tp->th_block);
	137	printf(" block %d", EXTRACT_16BITS(&tp->th_block));
	138	break;
	139
	140	case ERROR:
	141	/* Print error code string */
	142	TCHECK(tp->th_code);
825e8fa1	143	printf(" %s \"", tok2str(err2str, "tftp-err-#%d \"",
c8cf0f94 PA	144	EXTRACT_16BITS(&tp->th_code)));
	145	/* Print error message string */
	146	i = fn_print((const u_char *)tp->th_data, snapend);
	147	putchar('"');
	148	if (i)
	149	goto trunc;
	150	break;
	151
	152	default:
	153	/* We shouldn't get here */
	154	printf("(unknown #%d)", opcode);
	155	break;
	156	}
	157	return;
	158	trunc:
	159	fputs(tstr, stdout);
	160	return;
	161	}