[unix-history] / usr / src / usr.bin / tftp / tftp.c

/*
 * Copyright (c) 1985 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)tftp.c	5.5 (Berkeley) %G%";
#endif not lint

/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */

/*
 * TFTP User Program -- Protocol Machines
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>

#include <netinet/in.h>

#include <arpa/tftp.h>

#include <signal.h>
#include <stdio.h>
#include <errno.h>
#include <setjmp.h>

extern	int errno;

extern  struct sockaddr_in sin;         /* filled in by main */
extern  int     f;                      /* the opened socket */
extern  int     trace;
extern  int     verbose;
extern  int     rexmtval;
extern  int     maxtimeout;

#define PKTSIZE    SEGSIZE+4
char    ackbuf[PKTSIZE];
int	timeout;
jmp_buf	toplevel;
jmp_buf	timeoutbuf;

timer()
{

	timeout += rexmtval;
	if (timeout >= maxtimeout) {
		printf("Transfer timed out.\n");
		longjmp(toplevel, -1);
	}
	longjmp(timeoutbuf, 1);
}

/*
 * Send the requested file.
 */
sendfile(fd, name, mode)
	int fd;
	char *name;
	char *mode;
{
	register struct tftphdr *ap;       /* data and ack packets */
	struct tftphdr *r_init(), *dp;
	register int block = 0, size, n;
	register unsigned long amount = 0;
	struct sockaddr_in from;
	int fromlen;
	int convert;            /* true if doing nl->crlf conversion */
	FILE *file;

	startclock();           /* start stat's clock */
	dp = r_init();          /* reset fillbuf/read-ahead code */
	ap = (struct tftphdr *)ackbuf;
	file = fdopen(fd, "r");
	convert = !strcmp(mode, "netascii");

	signal(SIGALRM, timer);
	do {
		if (block == 0)
			size = makerequest(WRQ, name, dp, mode) - 4;
		else {
		/*      size = read(fd, dp->th_data, SEGSIZE);   */
			size = readit(file, &dp, convert);
			if (size < 0) {
				nak(errno + 100);
				break;
			}
			dp->th_opcode = htons((u_short)DATA);
			dp->th_block = htons((u_short)block);
		}
		timeout = 0;
		(void) setjmp(timeoutbuf);
send_data:
		if (trace)
			tpacket("sent", dp, size + 4);
		n = sendto(f, dp, size + 4, 0, (caddr_t)&sin, sizeof (sin));
		if (n != size + 4) {
			perror("tftp: sendto");
			goto abort;
		}
		read_ahead(file, convert);
		for ( ; ; ) {
			alarm(rexmtval);
			do {
				fromlen = sizeof (from);
				n = recvfrom(f, ackbuf, sizeof (ackbuf), 0,
				    (caddr_t)&from, &fromlen);
			} while (n <= 0);
			alarm(0);
			if (n < 0) {
				perror("tftp: recvfrom");
				goto abort;
			}
			sin.sin_port = from.sin_port;   /* added */
			if (trace)
				tpacket("received", ap, n);
			/* should verify packet came from server */
			ap->th_opcode = ntohs(ap->th_opcode);
			ap->th_block = ntohs(ap->th_block);
			if (ap->th_opcode == ERROR) {
				printf("Error code %d: %s\n", ap->th_code,
					ap->th_msg);
				goto abort;
			}
			if (ap->th_opcode == ACK) {
				int j;

				if (ap->th_block == block) {
					break;
				}
				/* On an error, try to synchronize
				 * both sides.
				 */
				j = synchnet(f);
				if (j && trace) {
					printf("discarded %d packets\n",
							j);
				}
				if (ap->th_block == (block-1)) {
					goto send_data;
				}
			}
		}
		if (block > 0)
			amount += size;
		block++;
	} while (size == SEGSIZE || block == 1);
abort:
	fclose(file);
	stopclock();
	if (amount > 0)
		printstats("Sent", amount);
}

/*
 * Receive a file.
 */
recvfile(fd, name, mode)
	int fd;
	char *name;
	char *mode;
{
	register struct tftphdr *ap;
	struct tftphdr *dp, *w_init();
	register int block = 1, n, size;
	unsigned long amount = 0;
	struct sockaddr_in from;
	int fromlen, firsttrip = 1;
	FILE *file;
	int convert;                    /* true if converting crlf -> lf */

	startclock();
	dp = w_init();
	ap = (struct tftphdr *)ackbuf;
	file = fdopen(fd, "w");
	convert = !strcmp(mode, "netascii");

	signal(SIGALRM, timer);
	do {
		if (firsttrip) {
			size = makerequest(RRQ, name, ap, mode);
			firsttrip = 0;
		} else {
			ap->th_opcode = htons((u_short)ACK);
			ap->th_block = htons((u_short)(block));
			size = 4;
			block++;
		}
		timeout = 0;
		(void) setjmp(timeoutbuf);
send_ack:
		if (trace)
			tpacket("sent", ap, size);
		if (sendto(f, ackbuf, size, 0, (caddr_t)&sin,
		    sizeof (sin)) != size) {
			alarm(0);
			perror("tftp: sendto");
			goto abort;
		}
		write_behind(file, convert);
		for ( ; ; ) {
			alarm(rexmtval);
			do  {
				fromlen = sizeof (from);
				n = recvfrom(f, dp, PKTSIZE, 0,
				    (caddr_t)&from, &fromlen);
			} while (n <= 0);
			alarm(0);
			if (n < 0) {
				perror("tftp: recvfrom");
				goto abort;
			}
			sin.sin_port = from.sin_port;   /* added */
			if (trace)
				tpacket("received", dp, n);
			/* should verify client address */
			dp->th_opcode = ntohs(dp->th_opcode);
			dp->th_block = ntohs(dp->th_block);
			if (dp->th_opcode == ERROR) {
				printf("Error code %d: %s\n", dp->th_code,
					dp->th_msg);
				goto abort;
			}
			if (dp->th_opcode == DATA) {
				int j;

				if (dp->th_block == block) {
					break;          /* have next packet */
				}
				/* On an error, try to synchronize
				 * both sides.
				 */
				j = synchnet(f);
				if (j && trace) {
					printf("discarded %d packets\n", j);
				}
				if (dp->th_block == (block-1)) {
					goto send_ack;  /* resend ack */
				}
			}
		}
	/*      size = write(fd, dp->th_data, n - 4); */
		size = writeit(file, &dp, n - 4, convert);
		if (size < 0) {
			nak(errno + 100);
			break;
		}
		amount += size;
	} while (size == SEGSIZE);
abort:                                          /* ok to ack, since user */
	ap->th_opcode = htons((u_short)ACK);    /* has seen err msg */
	ap->th_block = htons((u_short)block);
	(void) sendto(f, ackbuf, 4, 0, &sin, sizeof (sin));
	write_behind(file, convert);            /* flush last buffer */
	fclose(file);
	stopclock();
	if (amount > 0)
		printstats("Received", amount);
}

makerequest(request, name, tp, mode)
	int request;
	char *name, *mode;
	struct tftphdr *tp;
{
	register char *cp;

	tp->th_opcode = htons((u_short)request);
	cp = tp->th_stuff;
	strcpy(cp, name);
	cp += strlen(name);
	*cp++ = '\0';
	strcpy(cp, mode);
	cp += strlen(mode);
	*cp++ = '\0';
	return (cp - (char *)tp);
}

struct errmsg {
	int	e_code;
	char	*e_msg;
} errmsgs[] = {
	{ EUNDEF,	"Undefined error code" },
	{ ENOTFOUND,	"File not found" },
	{ EACCESS,	"Access violation" },
	{ ENOSPACE,	"Disk full or allocation exceeded" },
	{ EBADOP,	"Illegal TFTP operation" },
	{ EBADID,	"Unknown transfer ID" },
	{ EEXISTS,	"File already exists" },
	{ ENOUSER,	"No such user" },
	{ -1,		0 }
};

/*
 * Send a nak packet (error message).
 * Error code passed in is one of the
 * standard TFTP codes, or a UNIX errno
 * offset by 100.
 */
nak(error)
	int error;
{
	register struct tftphdr *tp;
	int length;
	register struct errmsg *pe;
	extern char *sys_errlist[];

	tp = (struct tftphdr *)ackbuf;
	tp->th_opcode = htons((u_short)ERROR);
	tp->th_code = htons((u_short)error);
	for (pe = errmsgs; pe->e_code >= 0; pe++)
		if (pe->e_code == error)
			break;
	if (pe->e_code < 0) {
		pe->e_msg = sys_errlist[error - 100];
		tp->th_code = EUNDEF;
	}
	strcpy(tp->th_msg, pe->e_msg);
	length = strlen(pe->e_msg) + 4;
	if (trace)
		tpacket("sent", tp, length);
	if (sendto(f, ackbuf, length, 0, &sin, sizeof (sin)) != length)
		perror("nak");
}

tpacket(s, tp, n)
	char *s;
	struct tftphdr *tp;
	int n;
{
	static char *opcodes[] =
	   { "#0", "RRQ", "WRQ", "DATA", "ACK", "ERROR" };
	register char *cp, *file;
	u_short op = ntohs(tp->th_opcode);
	char *index();

	if (op < RRQ || op > ERROR)
		printf("%s opcode=%x ", s, op);
	else
		printf("%s %s ", s, opcodes[op]);
	switch (op) {

	case RRQ:
	case WRQ:
		n -= 2;
		file = cp = tp->th_stuff;
		cp = index(cp, '\0');
		printf("<file=%s, mode=%s>\n", file, cp + 1);
		break;

	case DATA:
		printf("<block=%d, %d bytes>\n", ntohs(tp->th_block), n - 4);
		break;

	case ACK:
		printf("<block=%d>\n", ntohs(tp->th_block));
		break;

	case ERROR:
		printf("<code=%d, msg=%s>\n", ntohs(tp->th_code), tp->th_msg);
		break;
	}
}

struct timeval tstart;
struct timeval tstop;
struct timezone zone;

startclock() {
	gettimeofday(&tstart, &zone);
}

stopclock() {
	gettimeofday(&tstop, &zone);
}

printstats(direction, amount)
char *direction;
unsigned long amount;
{
	double delta;
			/* compute delta in 1/10's second units */
	delta = ((tstop.tv_sec*10.)+(tstop.tv_usec/100000)) -
		((tstart.tv_sec*10.)+(tstart.tv_usec/100000));
	delta = delta/10.;      /* back to seconds */
	printf("%s %d bytes in %.1f seconds", direction, amount, delta);
	if (verbose)
		printf(" [%.0f bits/sec]", (amount*8.)/delta);
	putchar('\n');
}
Commit	Line	Data
d0aeaf5a	1	/*
6457cfd6	2	* Copyright (c) 1985 Regents of the University of California.
d0aeaf5a DF	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
524aa063	7	#ifndef lint
15631344	8	static char sccsid[] = "@(#)tftp.c 5.5 (Berkeley) %G%";
d0aeaf5a	9	#endif not lint
d3fc13cc	10
6457cfd6 GM	11	/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
6457cfd6 GM	12
d3fc13cc SL	13	/*
	14	* TFTP User Program -- Protocol Machines
	15	*/
	16	#include <sys/types.h>
d3fc13cc	17	#include <sys/socket.h>
6457cfd6	18	#include <sys/time.h>
de3b21e8 SL	19
de3b21e8 SL	20	#include <netinet/in.h>
6457cfd6	21
86fe57d4 SL	22	#include <arpa/tftp.h>
86fe57d4 SL	23
d3fc13cc SL	24	#include <signal.h>
	25	#include <stdio.h>
	26	#include <errno.h>
	27	#include <setjmp.h>
de3b21e8	28
d3fc13cc	29	extern int errno;
6457cfd6 GM	30
	31	extern struct sockaddr_in sin; /* filled in by main */
	32	extern int f; /* the opened socket */
	33	extern int trace;
	34	extern int verbose;
	35	extern int rexmtval;
	36	extern int maxtimeout;
	37
	38	#define PKTSIZE SEGSIZE+4
	39	char ackbuf[PKTSIZE];
d3fc13cc SL	40	int timeout;
d3fc13cc SL	41	jmp_buf toplevel;
61ad9979	42	jmp_buf timeoutbuf;
d3fc13cc SL	43
	44	timer()
	45	{
61ad9979 SL	46
	47	timeout += rexmtval;
	48	if (timeout >= maxtimeout) {
d3fc13cc SL	49	printf("Transfer timed out.\n");
	50	longjmp(toplevel, -1);
	51	}
61ad9979	52	longjmp(timeoutbuf, 1);
d3fc13cc SL	53	}
	54
	55	/*
	56	* Send the requested file.
	57	*/
6457cfd6	58	sendfile(fd, name, mode)
d3fc13cc SL	59	int fd;
d3fc13cc SL	60	char *name;
6457cfd6	61	char *mode;
d3fc13cc	62	{
6457cfd6 GM	63	register struct tftphdr ap; / data and ack packets */
	64	struct tftphdr r_init(), dp;
	65	register int block = 0, size, n;
	66	register unsigned long amount = 0;
	67	struct sockaddr_in from;
	68	int fromlen;
	69	int convert; /* true if doing nl->crlf conversion */
	70	FILE *file;
	71
	72	startclock(); /* start stat's clock */
	73	dp = r_init(); /* reset fillbuf/read-ahead code */
	74	ap = (struct tftphdr *)ackbuf;
	75	file = fdopen(fd, "r");
	76	convert = !strcmp(mode, "netascii");
	77
61ad9979	78	signal(SIGALRM, timer);
d3fc13cc	79	do {
61ad9979	80	if (block == 0)
6457cfd6	81	size = makerequest(WRQ, name, dp, mode) - 4;
61ad9979	82	else {
6457cfd6 GM	83	/* size = read(fd, dp->th_data, SEGSIZE); */
6457cfd6 GM	84	size = readit(file, &dp, convert);
d3fc13cc	85	if (size < 0) {
6457cfd6	86	nak(errno + 100);
d3fc13cc SL	87	break;
d3fc13cc SL	88	}
6457cfd6 GM	89	dp->th_opcode = htons((u_short)DATA);
6457cfd6 GM	90	dp->th_block = htons((u_short)block);
d3fc13cc SL	91	}
d3fc13cc SL	92	timeout = 0;
61ad9979	93	(void) setjmp(timeoutbuf);
f65510cf	94	send_data:
d3fc13cc	95	if (trace)
6457cfd6 GM	96	tpacket("sent", dp, size + 4);
6457cfd6 GM	97	n = sendto(f, dp, size + 4, 0, (caddr_t)&sin, sizeof (sin));
de3b21e8	98	if (n != size + 4) {
61ad9979	99	perror("tftp: sendto");
6457cfd6	100	goto abort;
d3fc13cc	101	}
6457cfd6	102	read_ahead(file, convert);
f65510cf	103	for ( ; ; ) {
61ad9979 SL	104	alarm(rexmtval);
	105	do {
	106	fromlen = sizeof (from);
6457cfd6	107	n = recvfrom(f, ackbuf, sizeof (ackbuf), 0,
61ad9979 SL	108	(caddr_t)&from, &fromlen);
61ad9979 SL	109	} while (n <= 0);
d3fc13cc	110	alarm(0);
61ad9979 SL	111	if (n < 0) {
61ad9979 SL	112	perror("tftp: recvfrom");
6457cfd6	113	goto abort;
61ad9979	114	}
6457cfd6	115	sin.sin_port = from.sin_port; /* added */
61ad9979	116	if (trace)
6457cfd6	117	tpacket("received", ap, n);
61ad9979	118	/* should verify packet came from server */
6457cfd6 GM	119	ap->th_opcode = ntohs(ap->th_opcode);
	120	ap->th_block = ntohs(ap->th_block);
	121	if (ap->th_opcode == ERROR) {
	122	printf("Error code %d: %s\n", ap->th_code,
	123	ap->th_msg);
	124	goto abort;
61ad9979	125	}
f65510cf	126	if (ap->th_opcode == ACK) {
15631344 GM	127	int j;
15631344 GM	128
f65510cf GM	129	if (ap->th_block == block) {
f65510cf GM	130	break;
15631344 GM	131	}
	132	/* On an error, try to synchronize
	133	* both sides.
	134	*/
	135	j = synchnet(f);
	136	if (j && trace) {
	137	printf("discarded %d packets\n",
	138	j);
	139	}
	140	if (ap->th_block == (block-1)) {
	141	goto send_data;
f65510cf GM	142	}
	143	}
	144	}
d3fc13cc SL	145	if (block > 0)
	146	amount += size;
	147	block++;
	148	} while (size == SEGSIZE \|\| block == 1);
6457cfd6 GM	149	abort:
	150	fclose(file);
	151	stopclock();
	152	if (amount > 0)
	153	printstats("Sent", amount);
d3fc13cc SL	154	}
	155
	156	/*
	157	* Receive a file.
	158	*/
6457cfd6	159	recvfile(fd, name, mode)
d3fc13cc SL	160	int fd;
d3fc13cc SL	161	char *name;
6457cfd6	162	char *mode;
d3fc13cc	163	{
6457cfd6 GM	164	register struct tftphdr *ap;
	165	struct tftphdr dp, w_init();
	166	register int block = 1, n, size;
	167	unsigned long amount = 0;
	168	struct sockaddr_in from;
	169	int fromlen, firsttrip = 1;
	170	FILE *file;
	171	int convert; /* true if converting crlf -> lf */
	172
	173	startclock();
	174	dp = w_init();
	175	ap = (struct tftphdr *)ackbuf;
	176	file = fdopen(fd, "w");
	177	convert = !strcmp(mode, "netascii");
	178
61ad9979	179	signal(SIGALRM, timer);
d3fc13cc	180	do {
61ad9979	181	if (firsttrip) {
6457cfd6	182	size = makerequest(RRQ, name, ap, mode);
61ad9979 SL	183	firsttrip = 0;
61ad9979 SL	184	} else {
6457cfd6 GM	185	ap->th_opcode = htons((u_short)ACK);
6457cfd6 GM	186	ap->th_block = htons((u_short)(block));
61ad9979 SL	187	size = 4;
	188	block++;
	189	}
d3fc13cc	190	timeout = 0;
61ad9979	191	(void) setjmp(timeoutbuf);
6457cfd6	192	send_ack:
d3fc13cc	193	if (trace)
6457cfd6 GM	194	tpacket("sent", ap, size);
	195	if (sendto(f, ackbuf, size, 0, (caddr_t)&sin,
	196	sizeof (sin)) != size) {
d3fc13cc	197	alarm(0);
61ad9979	198	perror("tftp: sendto");
6457cfd6	199	goto abort;
d3fc13cc	200	}
6457cfd6 GM	201	write_behind(file, convert);
6457cfd6 GM	202	for ( ; ; ) {
61ad9979	203	alarm(rexmtval);
6457cfd6	204	do {
fc945f1a	205	fromlen = sizeof (from);
6457cfd6	206	n = recvfrom(f, dp, PKTSIZE, 0,
61ad9979	207	(caddr_t)&from, &fromlen);
fc945f1a	208	} while (n <= 0);
61ad9979 SL	209	alarm(0);
	210	if (n < 0) {
	211	perror("tftp: recvfrom");
6457cfd6	212	goto abort;
61ad9979	213	}
6457cfd6	214	sin.sin_port = from.sin_port; /* added */
61ad9979	215	if (trace)
6457cfd6 GM	216	tpacket("received", dp, n);
	217	/* should verify client address */
	218	dp->th_opcode = ntohs(dp->th_opcode);
	219	dp->th_block = ntohs(dp->th_block);
	220	if (dp->th_opcode == ERROR) {
	221	printf("Error code %d: %s\n", dp->th_code,
	222	dp->th_msg);
	223	goto abort;
	224	}
	225	if (dp->th_opcode == DATA) {
15631344 GM	226	int j;
	227
	228	if (dp->th_block == block) {
6457cfd6	229	break; /* have next packet */
15631344 GM	230	}
	231	/* On an error, try to synchronize
	232	* both sides.
	233	*/
	234	j = synchnet(f);
	235	if (j && trace) {
	236	printf("discarded %d packets\n", j);
	237	}
	238	if (dp->th_block == (block-1)) {
6457cfd6	239	goto send_ack; /* resend ack */
15631344	240	}
61ad9979	241	}
6457cfd6 GM	242	}
	243	/* size = write(fd, dp->th_data, n - 4); */
	244	size = writeit(file, &dp, n - 4, convert);
d3fc13cc	245	if (size < 0) {
6457cfd6 GM	246	nak(errno + 100);
6457cfd6 GM	247	break;
d3fc13cc SL	248	}
	249	amount += size;
	250	} while (size == SEGSIZE);
6457cfd6 GM	251	abort: /* ok to ack, since user */
	252	ap->th_opcode = htons((u_short)ACK); /* has seen err msg */
	253	ap->th_block = htons((u_short)block);
	254	(void) sendto(f, ackbuf, 4, 0, &sin, sizeof (sin));
	255	write_behind(file, convert); /* flush last buffer */
	256	fclose(file);
	257	stopclock();
	258	if (amount > 0)
	259	printstats("Received", amount);
d3fc13cc SL	260	}
d3fc13cc SL	261
6457cfd6	262	makerequest(request, name, tp, mode)
d3fc13cc	263	int request;
6457cfd6 GM	264	char name, mode;
6457cfd6 GM	265	struct tftphdr *tp;
d3fc13cc	266	{
d3fc13cc SL	267	register char *cp;
d3fc13cc SL	268
6457cfd6 GM	269	tp->th_opcode = htons((u_short)request);
	270	cp = tp->th_stuff;
	271	strcpy(cp, name);
	272	cp += strlen(name);
d3fc13cc SL	273	*cp++ = '\0';
d3fc13cc SL	274	strcpy(cp, mode);
6457cfd6	275	cp += strlen(mode);
d3fc13cc	276	*cp++ = '\0';
6457cfd6	277	return (cp - (char *)tp);
d3fc13cc SL	278	}
	279
	280	struct errmsg {
	281	int e_code;
	282	char *e_msg;
	283	} errmsgs[] = {
	284	{ EUNDEF, "Undefined error code" },
	285	{ ENOTFOUND, "File not found" },
	286	{ EACCESS, "Access violation" },
	287	{ ENOSPACE, "Disk full or allocation exceeded" },
	288	{ EBADOP, "Illegal TFTP operation" },
	289	{ EBADID, "Unknown transfer ID" },
	290	{ EEXISTS, "File already exists" },
	291	{ ENOUSER, "No such user" },
	292	{ -1, 0 }
	293	};
	294
	295	/*
	296	* Send a nak packet (error message).
	297	* Error code passed in is one of the
	298	* standard TFTP codes, or a UNIX errno
	299	* offset by 100.
	300	*/
6457cfd6	301	nak(error)
d3fc13cc SL	302	int error;
d3fc13cc SL	303	{
6457cfd6	304	register struct tftphdr *tp;
d3fc13cc SL	305	int length;
	306	register struct errmsg *pe;
	307	extern char *sys_errlist[];
	308
6457cfd6 GM	309	tp = (struct tftphdr *)ackbuf;
	310	tp->th_opcode = htons((u_short)ERROR);
	311	tp->th_code = htons((u_short)error);
d3fc13cc SL	312	for (pe = errmsgs; pe->e_code >= 0; pe++)
	313	if (pe->e_code == error)
	314	break;
6457cfd6	315	if (pe->e_code < 0) {
d3fc13cc	316	pe->e_msg = sys_errlist[error - 100];
6457cfd6 GM	317	tp->th_code = EUNDEF;
	318	}
	319	strcpy(tp->th_msg, pe->e_msg);
d3fc13cc SL	320	length = strlen(pe->e_msg) + 4;
d3fc13cc SL	321	if (trace)
6457cfd6 GM	322	tpacket("sent", tp, length);
	323	if (sendto(f, ackbuf, length, 0, &sin, sizeof (sin)) != length)
	324	perror("nak");
d3fc13cc SL	325	}
d3fc13cc SL	326
6457cfd6	327	tpacket(s, tp, n)
7457289f	328	char *s;
d3fc13cc SL	329	struct tftphdr *tp;
	330	int n;
	331	{
	332	static char *opcodes[] =
	333	{ "#0", "RRQ", "WRQ", "DATA", "ACK", "ERROR" };
	334	register char cp, file;
	335	u_short op = ntohs(tp->th_opcode);
	336	char *index();
	337
	338	if (op < RRQ \|\| op > ERROR)
6457cfd6	339	printf("%s opcode=%x ", s, op);
d3fc13cc	340	else
6457cfd6	341	printf("%s %s ", s, opcodes[op]);
d3fc13cc SL	342	switch (op) {
	343
	344	case RRQ:
	345	case WRQ:
	346	n -= 2;
	347	file = cp = tp->th_stuff;
	348	cp = index(cp, '\0');
	349	printf("<file=%s, mode=%s>\n", file, cp + 1);
	350	break;
	351
	352	case DATA:
	353	printf("<block=%d, %d bytes>\n", ntohs(tp->th_block), n - 4);
	354	break;
	355
	356	case ACK:
	357	printf("<block=%d>\n", ntohs(tp->th_block));
	358	break;
	359
	360	case ERROR:
	361	printf("<code=%d, msg=%s>\n", ntohs(tp->th_code), tp->th_msg);
	362	break;
	363	}
	364	}
6457cfd6 GM	365
	366	struct timeval tstart;
	367	struct timeval tstop;
	368	struct timezone zone;
	369
	370	startclock() {
	371	gettimeofday(&tstart, &zone);
	372	}
	373
	374	stopclock() {
	375	gettimeofday(&tstop, &zone);
	376	}
	377
	378	printstats(direction, amount)
	379	char *direction;
	380	unsigned long amount;
	381	{
	382	double delta;
	383	/* compute delta in 1/10's second units */
	384	delta = ((tstop.tv_sec*10.)+(tstop.tv_usec/100000)) -
	385	((tstart.tv_sec*10.)+(tstart.tv_usec/100000));
	386	delta = delta/10.; /* back to seconds */
	387	printf("%s %d bytes in %.1f seconds", direction, amount, delta);
	388	if (verbose)
	389	printf(" [%.0f bits/sec]", (amount*8.)/delta);
	390	putchar('\n');
	391	}
	392