xref: /freebsd/usr.bin/tftp/main.c (revision 4dac6235cf2718f6c383b6bda1dc346bb357e886)
19b50d902SRodney W. Grimes /*
29b50d902SRodney W. Grimes  * Copyright (c) 1983, 1993
39b50d902SRodney W. Grimes  *	The Regents of the University of California.  All rights reserved.
49b50d902SRodney W. Grimes  *
59b50d902SRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
69b50d902SRodney W. Grimes  * modification, are permitted provided that the following conditions
79b50d902SRodney W. Grimes  * are met:
89b50d902SRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
99b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
109b50d902SRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
119b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
129b50d902SRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
139b50d902SRodney W. Grimes  * 3. All advertising materials mentioning features or use of this software
149b50d902SRodney W. Grimes  *    must display the following acknowledgement:
159b50d902SRodney W. Grimes  *	This product includes software developed by the University of
169b50d902SRodney W. Grimes  *	California, Berkeley and its contributors.
179b50d902SRodney W. Grimes  * 4. Neither the name of the University nor the names of its contributors
189b50d902SRodney W. Grimes  *    may be used to endorse or promote products derived from this software
199b50d902SRodney W. Grimes  *    without specific prior written permission.
209b50d902SRodney W. Grimes  *
219b50d902SRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
229b50d902SRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
239b50d902SRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
249b50d902SRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
259b50d902SRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
269b50d902SRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
279b50d902SRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
289b50d902SRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
299b50d902SRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
309b50d902SRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
319b50d902SRodney W. Grimes  * SUCH DAMAGE.
329b50d902SRodney W. Grimes  */
339b50d902SRodney W. Grimes 
349b50d902SRodney W. Grimes #ifndef lint
35fd129a02SPhilippe Charnier static const char copyright[] =
369b50d902SRodney W. Grimes "@(#) Copyright (c) 1983, 1993\n\
379b50d902SRodney W. Grimes 	The Regents of the University of California.  All rights reserved.\n";
388049f797SMark Murray #endif
399b50d902SRodney W. Grimes 
408f4c8256SDavid Malone #if 0
419b50d902SRodney W. Grimes #ifndef lint
428f4c8256SDavid Malone static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 6/6/93";
43fd129a02SPhilippe Charnier #endif
448f4c8256SDavid Malone #endif
458f4c8256SDavid Malone 
468f4c8256SDavid Malone #include <sys/cdefs.h>
478f4c8256SDavid Malone __FBSDID("$FreeBSD$");
489b50d902SRodney W. Grimes 
499b50d902SRodney W. Grimes /* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
509b50d902SRodney W. Grimes 
519b50d902SRodney W. Grimes /*
529b50d902SRodney W. Grimes  * TFTP User Program -- Command Interface.
539b50d902SRodney W. Grimes  */
54fd129a02SPhilippe Charnier #include <sys/param.h>
559b50d902SRodney W. Grimes #include <sys/types.h>
569b50d902SRodney W. Grimes #include <sys/socket.h>
579b50d902SRodney W. Grimes #include <sys/file.h>
58a716ad66SWarner Losh #include <sys/param.h>
599b50d902SRodney W. Grimes 
609b50d902SRodney W. Grimes #include <netinet/in.h>
619b50d902SRodney W. Grimes 
629b50d902SRodney W. Grimes #include <arpa/inet.h>
639b50d902SRodney W. Grimes 
649b50d902SRodney W. Grimes #include <ctype.h>
65fd129a02SPhilippe Charnier #include <err.h>
668979160aSBruce Evans #include <histedit.h>
679b50d902SRodney W. Grimes #include <netdb.h>
689b50d902SRodney W. Grimes #include <setjmp.h>
699b50d902SRodney W. Grimes #include <signal.h>
709b50d902SRodney W. Grimes #include <stdio.h>
719b50d902SRodney W. Grimes #include <stdlib.h>
729b50d902SRodney W. Grimes #include <string.h>
739b50d902SRodney W. Grimes #include <unistd.h>
749b50d902SRodney W. Grimes 
759b50d902SRodney W. Grimes #include "extern.h"
769b50d902SRodney W. Grimes 
77c33ed450SMatthew N. Dodd #define	MAXLINE		200
788979160aSBruce Evans #define	TIMEOUT		5		/* secs between rexmt's */
79c33ed450SMatthew N. Dodd 
804dac6235SHajimu UMEMOTO struct	sockaddr_storage peeraddr;
819b50d902SRodney W. Grimes int	f;
829b50d902SRodney W. Grimes int	trace;
839b50d902SRodney W. Grimes int	verbose;
849b50d902SRodney W. Grimes int	connected;
859b50d902SRodney W. Grimes char	mode[32];
86c33ed450SMatthew N. Dodd char	line[MAXLINE];
879b50d902SRodney W. Grimes int	margc;
889b50d902SRodney W. Grimes char	*margv[20];
899b50d902SRodney W. Grimes jmp_buf	toplevel;
909b50d902SRodney W. Grimes 
913f330d7dSWarner Losh void	get(int, char **);
923f330d7dSWarner Losh void	help(int, char **);
933f330d7dSWarner Losh void	intr(int);
943f330d7dSWarner Losh void	modecmd(int, char **);
953f330d7dSWarner Losh void	put(int, char **);
963f330d7dSWarner Losh void	quit(int, char **);
973f330d7dSWarner Losh void	setascii(int, char **);
983f330d7dSWarner Losh void	setbinary(int, char **);
994dac6235SHajimu UMEMOTO void	setpeer0(char *, char *);
1003f330d7dSWarner Losh void	setpeer(int, char **);
1013f330d7dSWarner Losh void	setrexmt(int, char **);
1023f330d7dSWarner Losh void	settimeout(int, char **);
1033f330d7dSWarner Losh void	settrace(int, char **);
1043f330d7dSWarner Losh void	setverbose(int, char **);
1053f330d7dSWarner Losh void	status(int, char **);
1069b50d902SRodney W. Grimes 
1073f330d7dSWarner Losh static void command(void) __dead2;
1083f330d7dSWarner Losh static const char *command_prompt(void);
1099b50d902SRodney W. Grimes 
1103f330d7dSWarner Losh static void getusage(char *);
1113f330d7dSWarner Losh static void makeargv(void);
1123f330d7dSWarner Losh static void putusage(char *);
1133f330d7dSWarner Losh static void settftpmode(const char *);
1148049f797SMark Murray 
1153f330d7dSWarner Losh char	*tail(char *);
1163f330d7dSWarner Losh struct	cmd *getcmd(char *);
1179b50d902SRodney W. Grimes 
1189b50d902SRodney W. Grimes #define HELPINDENT (sizeof("connect"))
1199b50d902SRodney W. Grimes 
1209b50d902SRodney W. Grimes struct cmd {
1218049f797SMark Murray 	const char	*name;
1229b50d902SRodney W. Grimes 	char	*help;
1233f330d7dSWarner Losh 	void	(*handler)(int, char **);
1249b50d902SRodney W. Grimes };
1259b50d902SRodney W. Grimes 
1269b50d902SRodney W. Grimes char	vhelp[] = "toggle verbose mode";
1279b50d902SRodney W. Grimes char	thelp[] = "toggle packet tracing";
1289b50d902SRodney W. Grimes char	chelp[] = "connect to remote tftp";
1299b50d902SRodney W. Grimes char	qhelp[] = "exit tftp";
1309b50d902SRodney W. Grimes char	hhelp[] = "print help information";
1319b50d902SRodney W. Grimes char	shelp[] = "send file";
1329b50d902SRodney W. Grimes char	rhelp[] = "receive file";
1339b50d902SRodney W. Grimes char	mhelp[] = "set file transfer mode";
1349b50d902SRodney W. Grimes char	sthelp[] = "show current status";
1359b50d902SRodney W. Grimes char	xhelp[] = "set per-packet retransmission timeout";
1369b50d902SRodney W. Grimes char	ihelp[] = "set total retransmission timeout";
1379b50d902SRodney W. Grimes char    ashelp[] = "set mode to netascii";
1389b50d902SRodney W. Grimes char    bnhelp[] = "set mode to octet";
1399b50d902SRodney W. Grimes 
1409b50d902SRodney W. Grimes struct cmd cmdtab[] = {
1419b50d902SRodney W. Grimes 	{ "connect",	chelp,		setpeer },
1429b50d902SRodney W. Grimes 	{ "mode",       mhelp,          modecmd },
1439b50d902SRodney W. Grimes 	{ "put",	shelp,		put },
1449b50d902SRodney W. Grimes 	{ "get",	rhelp,		get },
1459b50d902SRodney W. Grimes 	{ "quit",	qhelp,		quit },
1469b50d902SRodney W. Grimes 	{ "verbose",	vhelp,		setverbose },
1479b50d902SRodney W. Grimes 	{ "trace",	thelp,		settrace },
1489b50d902SRodney W. Grimes 	{ "status",	sthelp,		status },
1499b50d902SRodney W. Grimes 	{ "binary",     bnhelp,         setbinary },
1509b50d902SRodney W. Grimes 	{ "ascii",      ashelp,         setascii },
1519b50d902SRodney W. Grimes 	{ "rexmt",	xhelp,		setrexmt },
1529b50d902SRodney W. Grimes 	{ "timeout",	ihelp,		settimeout },
1539b50d902SRodney W. Grimes 	{ "?",		hhelp,		help },
1548049f797SMark Murray 	{ NULL, NULL, NULL }
1559b50d902SRodney W. Grimes };
1569b50d902SRodney W. Grimes 
1579b50d902SRodney W. Grimes int
1589b50d902SRodney W. Grimes main(argc, argv)
1599b50d902SRodney W. Grimes 	int argc;
1609b50d902SRodney W. Grimes 	char *argv[];
1619b50d902SRodney W. Grimes {
1624dac6235SHajimu UMEMOTO 	f = -1;
1639b50d902SRodney W. Grimes 	strcpy(mode, "netascii");
1649b50d902SRodney W. Grimes 	signal(SIGINT, intr);
1659b50d902SRodney W. Grimes 	if (argc > 1) {
1669b50d902SRodney W. Grimes 		if (setjmp(toplevel) != 0)
1679b50d902SRodney W. Grimes 			exit(0);
1689b50d902SRodney W. Grimes 		setpeer(argc, argv);
1699b50d902SRodney W. Grimes 	}
1709b50d902SRodney W. Grimes 	if (setjmp(toplevel) != 0)
1719b50d902SRodney W. Grimes 		(void)putchar('\n');
1729b50d902SRodney W. Grimes 	command();
1739b50d902SRodney W. Grimes }
1749b50d902SRodney W. Grimes 
175fd129a02SPhilippe Charnier char    hostname[MAXHOSTNAMELEN];
1769b50d902SRodney W. Grimes 
1779b50d902SRodney W. Grimes void
1784dac6235SHajimu UMEMOTO setpeer0(host, port)
1794dac6235SHajimu UMEMOTO 	char *host;
1804dac6235SHajimu UMEMOTO 	char *port;
1814dac6235SHajimu UMEMOTO {
1824dac6235SHajimu UMEMOTO 	struct addrinfo hints, *res0, *res;
1834dac6235SHajimu UMEMOTO 	int error;
1844dac6235SHajimu UMEMOTO 	struct sockaddr_storage ss;
1854dac6235SHajimu UMEMOTO 	char *cause = "unknown";
1864dac6235SHajimu UMEMOTO 
1874dac6235SHajimu UMEMOTO 	if (connected) {
1884dac6235SHajimu UMEMOTO 		close(f);
1894dac6235SHajimu UMEMOTO 		f = -1;
1904dac6235SHajimu UMEMOTO 	}
1914dac6235SHajimu UMEMOTO 	connected = 0;
1924dac6235SHajimu UMEMOTO 
1934dac6235SHajimu UMEMOTO 	memset(&hints, 0, sizeof(hints));
1944dac6235SHajimu UMEMOTO 	hints.ai_family = PF_UNSPEC;
1954dac6235SHajimu UMEMOTO 	hints.ai_socktype = SOCK_DGRAM;
1964dac6235SHajimu UMEMOTO 	hints.ai_protocol = IPPROTO_UDP;
1974dac6235SHajimu UMEMOTO 	hints.ai_flags = AI_CANONNAME;
1984dac6235SHajimu UMEMOTO 	if (!port)
1994dac6235SHajimu UMEMOTO 		port = "tftp";
2004dac6235SHajimu UMEMOTO 	error = getaddrinfo(host, port, &hints, &res0);
2014dac6235SHajimu UMEMOTO 	if (error) {
2024dac6235SHajimu UMEMOTO 		warnx("%s", gai_strerror(error));
2034dac6235SHajimu UMEMOTO 		return;
2044dac6235SHajimu UMEMOTO 	}
2054dac6235SHajimu UMEMOTO 
2064dac6235SHajimu UMEMOTO 	for (res = res0; res; res = res->ai_next) {
2074dac6235SHajimu UMEMOTO 		if (res->ai_addrlen > sizeof(peeraddr))
2084dac6235SHajimu UMEMOTO 			continue;
2094dac6235SHajimu UMEMOTO 		f = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
2104dac6235SHajimu UMEMOTO 		if (f < 0) {
2114dac6235SHajimu UMEMOTO 			cause = "socket";
2124dac6235SHajimu UMEMOTO 			continue;
2134dac6235SHajimu UMEMOTO 		}
2144dac6235SHajimu UMEMOTO 
2154dac6235SHajimu UMEMOTO 		memset(&ss, 0, sizeof(ss));
2164dac6235SHajimu UMEMOTO 		ss.ss_family = res->ai_family;
2174dac6235SHajimu UMEMOTO 		ss.ss_len = res->ai_addrlen;
2184dac6235SHajimu UMEMOTO 		if (bind(f, (struct sockaddr *)&ss, ss.ss_len) < 0) {
2194dac6235SHajimu UMEMOTO 			cause = "bind";
2204dac6235SHajimu UMEMOTO 			close(f);
2214dac6235SHajimu UMEMOTO 			f = -1;
2224dac6235SHajimu UMEMOTO 			continue;
2234dac6235SHajimu UMEMOTO 		}
2244dac6235SHajimu UMEMOTO 
2254dac6235SHajimu UMEMOTO 		break;
2264dac6235SHajimu UMEMOTO 	}
2274dac6235SHajimu UMEMOTO 
2284dac6235SHajimu UMEMOTO 	if (f < 0)
2294dac6235SHajimu UMEMOTO 		warn("%s", cause);
2304dac6235SHajimu UMEMOTO 	else {
2314dac6235SHajimu UMEMOTO 		/* res->ai_addr <= sizeof(peeraddr) is guaranteed */
2324dac6235SHajimu UMEMOTO 		memcpy(&peeraddr, res->ai_addr, res->ai_addrlen);
2334dac6235SHajimu UMEMOTO 		if (res->ai_canonname) {
2344dac6235SHajimu UMEMOTO 			(void) strncpy(hostname, res->ai_canonname,
2354dac6235SHajimu UMEMOTO 				sizeof(hostname));
2364dac6235SHajimu UMEMOTO 		} else
2374dac6235SHajimu UMEMOTO 			(void) strncpy(hostname, host, sizeof(hostname));
2384dac6235SHajimu UMEMOTO 		hostname[sizeof(hostname)-1] = 0;
2394dac6235SHajimu UMEMOTO 		connected = 1;
2404dac6235SHajimu UMEMOTO 	}
2414dac6235SHajimu UMEMOTO 
2424dac6235SHajimu UMEMOTO 	freeaddrinfo(res0);
2434dac6235SHajimu UMEMOTO }
2444dac6235SHajimu UMEMOTO 
2454dac6235SHajimu UMEMOTO void
2469b50d902SRodney W. Grimes setpeer(argc, argv)
2479b50d902SRodney W. Grimes 	int argc;
2489b50d902SRodney W. Grimes 	char *argv[];
2499b50d902SRodney W. Grimes {
2509b50d902SRodney W. Grimes 
2519b50d902SRodney W. Grimes 	if (argc < 2) {
2529b50d902SRodney W. Grimes 		strcpy(line, "Connect ");
2539b50d902SRodney W. Grimes 		printf("(to) ");
254ca22ff9eSJoerg Wunsch 		fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
2559b50d902SRodney W. Grimes 		makeargv();
2569b50d902SRodney W. Grimes 		argc = margc;
2579b50d902SRodney W. Grimes 		argv = margv;
2589b50d902SRodney W. Grimes 	}
259b50764b0SGuido van Rooij 	if ((argc < 2) || (argc > 3)) {
2609b50d902SRodney W. Grimes 		printf("usage: %s host-name [port]\n", argv[0]);
2619b50d902SRodney W. Grimes 		return;
2629b50d902SRodney W. Grimes 	}
2634dac6235SHajimu UMEMOTO 	if (argc == 3)
2644dac6235SHajimu UMEMOTO 		setpeer0(argv[1], NULL);
2654dac6235SHajimu UMEMOTO 	else
2664dac6235SHajimu UMEMOTO 		setpeer0(argv[1], argv[2]);
2679b50d902SRodney W. Grimes }
2689b50d902SRodney W. Grimes 
2699b50d902SRodney W. Grimes struct	modes {
2708049f797SMark Murray 	const char *m_name;
2718049f797SMark Murray 	const char *m_mode;
2729b50d902SRodney W. Grimes } modes[] = {
2739b50d902SRodney W. Grimes 	{ "ascii",	"netascii" },
2749b50d902SRodney W. Grimes 	{ "netascii",   "netascii" },
2759b50d902SRodney W. Grimes 	{ "binary",     "octet" },
2769b50d902SRodney W. Grimes 	{ "image",      "octet" },
2779b50d902SRodney W. Grimes 	{ "octet",     "octet" },
2789b50d902SRodney W. Grimes /*      { "mail",       "mail" },       */
2799b50d902SRodney W. Grimes 	{ 0,		0 }
2809b50d902SRodney W. Grimes };
2819b50d902SRodney W. Grimes 
2829b50d902SRodney W. Grimes void
2839b50d902SRodney W. Grimes modecmd(argc, argv)
2849b50d902SRodney W. Grimes 	int argc;
2859b50d902SRodney W. Grimes 	char *argv[];
2869b50d902SRodney W. Grimes {
2878049f797SMark Murray 	struct modes *p;
2888049f797SMark Murray 	const char *sep;
2899b50d902SRodney W. Grimes 
2909b50d902SRodney W. Grimes 	if (argc < 2) {
2919b50d902SRodney W. Grimes 		printf("Using %s mode to transfer files.\n", mode);
2929b50d902SRodney W. Grimes 		return;
2939b50d902SRodney W. Grimes 	}
2949b50d902SRodney W. Grimes 	if (argc == 2) {
2959b50d902SRodney W. Grimes 		for (p = modes; p->m_name; p++)
2969b50d902SRodney W. Grimes 			if (strcmp(argv[1], p->m_name) == 0)
2979b50d902SRodney W. Grimes 				break;
2989b50d902SRodney W. Grimes 		if (p->m_name) {
2999b50d902SRodney W. Grimes 			settftpmode(p->m_mode);
3009b50d902SRodney W. Grimes 			return;
3019b50d902SRodney W. Grimes 		}
3029b50d902SRodney W. Grimes 		printf("%s: unknown mode\n", argv[1]);
3039b50d902SRodney W. Grimes 		/* drop through and print usage message */
3049b50d902SRodney W. Grimes 	}
3059b50d902SRodney W. Grimes 
3069b50d902SRodney W. Grimes 	printf("usage: %s [", argv[0]);
3079b50d902SRodney W. Grimes 	sep = " ";
3089b50d902SRodney W. Grimes 	for (p = modes; p->m_name; p++) {
3099b50d902SRodney W. Grimes 		printf("%s%s", sep, p->m_name);
3109b50d902SRodney W. Grimes 		if (*sep == ' ')
3119b50d902SRodney W. Grimes 			sep = " | ";
3129b50d902SRodney W. Grimes 	}
3139b50d902SRodney W. Grimes 	printf(" ]\n");
3149b50d902SRodney W. Grimes 	return;
3159b50d902SRodney W. Grimes }
3169b50d902SRodney W. Grimes 
3179b50d902SRodney W. Grimes void
3189b50d902SRodney W. Grimes setbinary(argc, argv)
3198049f797SMark Murray 	int argc __unused;
3208049f797SMark Murray 	char *argv[] __unused;
3219b50d902SRodney W. Grimes {
3229b50d902SRodney W. Grimes 
3239b50d902SRodney W. Grimes 	settftpmode("octet");
3249b50d902SRodney W. Grimes }
3259b50d902SRodney W. Grimes 
3269b50d902SRodney W. Grimes void
3279b50d902SRodney W. Grimes setascii(argc, argv)
3288049f797SMark Murray 	int argc __unused;
3298049f797SMark Murray 	char *argv[] __unused;
3309b50d902SRodney W. Grimes {
3319b50d902SRodney W. Grimes 
3329b50d902SRodney W. Grimes 	settftpmode("netascii");
3339b50d902SRodney W. Grimes }
3349b50d902SRodney W. Grimes 
3359b50d902SRodney W. Grimes static void
3369b50d902SRodney W. Grimes settftpmode(newmode)
3378049f797SMark Murray 	const char *newmode;
3389b50d902SRodney W. Grimes {
3399b50d902SRodney W. Grimes 	strcpy(mode, newmode);
3409b50d902SRodney W. Grimes 	if (verbose)
3419b50d902SRodney W. Grimes 		printf("mode set to %s\n", mode);
3429b50d902SRodney W. Grimes }
3439b50d902SRodney W. Grimes 
3449b50d902SRodney W. Grimes 
3459b50d902SRodney W. Grimes /*
3469b50d902SRodney W. Grimes  * Send file(s).
3479b50d902SRodney W. Grimes  */
3489b50d902SRodney W. Grimes void
3499b50d902SRodney W. Grimes put(argc, argv)
3509b50d902SRodney W. Grimes 	int argc;
3519b50d902SRodney W. Grimes 	char *argv[];
3529b50d902SRodney W. Grimes {
3539b50d902SRodney W. Grimes 	int fd;
3548049f797SMark Murray 	int n;
3558049f797SMark Murray 	char *cp, *targ;
3569b50d902SRodney W. Grimes 
3579b50d902SRodney W. Grimes 	if (argc < 2) {
3589b50d902SRodney W. Grimes 		strcpy(line, "send ");
3599b50d902SRodney W. Grimes 		printf("(file) ");
360ca22ff9eSJoerg Wunsch 		fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
3619b50d902SRodney W. Grimes 		makeargv();
3629b50d902SRodney W. Grimes 		argc = margc;
3639b50d902SRodney W. Grimes 		argv = margv;
3649b50d902SRodney W. Grimes 	}
3659b50d902SRodney W. Grimes 	if (argc < 2) {
3669b50d902SRodney W. Grimes 		putusage(argv[0]);
3679b50d902SRodney W. Grimes 		return;
3689b50d902SRodney W. Grimes 	}
3699b50d902SRodney W. Grimes 	targ = argv[argc - 1];
3704dac6235SHajimu UMEMOTO 	if (rindex(argv[argc - 1], ':')) {
3718049f797SMark Murray 		char *lcp;
3729b50d902SRodney W. Grimes 
3739b50d902SRodney W. Grimes 		for (n = 1; n < argc - 1; n++)
3749b50d902SRodney W. Grimes 			if (index(argv[n], ':')) {
3759b50d902SRodney W. Grimes 				putusage(argv[0]);
3769b50d902SRodney W. Grimes 				return;
3779b50d902SRodney W. Grimes 			}
3788049f797SMark Murray 		lcp = argv[argc - 1];
3794dac6235SHajimu UMEMOTO 		targ = rindex(lcp, ':');
3809b50d902SRodney W. Grimes 		*targ++ = 0;
3814dac6235SHajimu UMEMOTO 		if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') {
3824dac6235SHajimu UMEMOTO 			lcp[strlen(lcp) - 1] = '\0';
3834dac6235SHajimu UMEMOTO 			lcp++;
3849b50d902SRodney W. Grimes 		}
3854dac6235SHajimu UMEMOTO 		setpeer0(lcp, NULL);
3869b50d902SRodney W. Grimes 	}
3879b50d902SRodney W. Grimes 	if (!connected) {
3889b50d902SRodney W. Grimes 		printf("No target machine specified.\n");
3899b50d902SRodney W. Grimes 		return;
3909b50d902SRodney W. Grimes 	}
3919b50d902SRodney W. Grimes 	if (argc < 4) {
3929b50d902SRodney W. Grimes 		cp = argc == 2 ? tail(targ) : argv[1];
3939b50d902SRodney W. Grimes 		fd = open(cp, O_RDONLY);
3949b50d902SRodney W. Grimes 		if (fd < 0) {
395fd129a02SPhilippe Charnier 			warn("%s", cp);
3969b50d902SRodney W. Grimes 			return;
3979b50d902SRodney W. Grimes 		}
3989b50d902SRodney W. Grimes 		if (verbose)
3999b50d902SRodney W. Grimes 			printf("putting %s to %s:%s [%s]\n",
4009b50d902SRodney W. Grimes 				cp, hostname, targ, mode);
4018692ad46SDavid Greenman 		xmitfile(fd, targ, mode);
4029b50d902SRodney W. Grimes 		return;
4039b50d902SRodney W. Grimes 	}
4049b50d902SRodney W. Grimes 				/* this assumes the target is a directory */
4059b50d902SRodney W. Grimes 				/* on a remote unix system.  hmmmm.  */
4069b50d902SRodney W. Grimes 	cp = index(targ, '\0');
4079b50d902SRodney W. Grimes 	*cp++ = '/';
4089b50d902SRodney W. Grimes 	for (n = 1; n < argc - 1; n++) {
4099b50d902SRodney W. Grimes 		strcpy(cp, tail(argv[n]));
4109b50d902SRodney W. Grimes 		fd = open(argv[n], O_RDONLY);
4119b50d902SRodney W. Grimes 		if (fd < 0) {
412fd129a02SPhilippe Charnier 			warn("%s", argv[n]);
4139b50d902SRodney W. Grimes 			continue;
4149b50d902SRodney W. Grimes 		}
4159b50d902SRodney W. Grimes 		if (verbose)
4169b50d902SRodney W. Grimes 			printf("putting %s to %s:%s [%s]\n",
4179b50d902SRodney W. Grimes 				argv[n], hostname, targ, mode);
4188692ad46SDavid Greenman 		xmitfile(fd, targ, mode);
4199b50d902SRodney W. Grimes 	}
4209b50d902SRodney W. Grimes }
4219b50d902SRodney W. Grimes 
4229b50d902SRodney W. Grimes static void
4239b50d902SRodney W. Grimes putusage(s)
4249b50d902SRodney W. Grimes 	char *s;
4259b50d902SRodney W. Grimes {
4269b50d902SRodney W. Grimes 	printf("usage: %s file ... host:target, or\n", s);
4279b50d902SRodney W. Grimes 	printf("       %s file ... target (when already connected)\n", s);
4289b50d902SRodney W. Grimes }
4299b50d902SRodney W. Grimes 
4309b50d902SRodney W. Grimes /*
4319b50d902SRodney W. Grimes  * Receive file(s).
4329b50d902SRodney W. Grimes  */
4339b50d902SRodney W. Grimes void
4349b50d902SRodney W. Grimes get(argc, argv)
4359b50d902SRodney W. Grimes 	int argc;
4369b50d902SRodney W. Grimes 	char *argv[];
4379b50d902SRodney W. Grimes {
4389b50d902SRodney W. Grimes 	int fd;
4398049f797SMark Murray 	int n;
4408049f797SMark Murray 	char *cp;
4419b50d902SRodney W. Grimes 	char *src;
4429b50d902SRodney W. Grimes 
4439b50d902SRodney W. Grimes 	if (argc < 2) {
4449b50d902SRodney W. Grimes 		strcpy(line, "get ");
4459b50d902SRodney W. Grimes 		printf("(files) ");
446ca22ff9eSJoerg Wunsch 		fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
4479b50d902SRodney W. Grimes 		makeargv();
4489b50d902SRodney W. Grimes 		argc = margc;
4499b50d902SRodney W. Grimes 		argv = margv;
4509b50d902SRodney W. Grimes 	}
4519b50d902SRodney W. Grimes 	if (argc < 2) {
4529b50d902SRodney W. Grimes 		getusage(argv[0]);
4539b50d902SRodney W. Grimes 		return;
4549b50d902SRodney W. Grimes 	}
4559b50d902SRodney W. Grimes 	if (!connected) {
4569b50d902SRodney W. Grimes 		for (n = 1; n < argc ; n++)
4574dac6235SHajimu UMEMOTO 			if (rindex(argv[n], ':') == 0) {
4589b50d902SRodney W. Grimes 				getusage(argv[0]);
4599b50d902SRodney W. Grimes 				return;
4609b50d902SRodney W. Grimes 			}
4619b50d902SRodney W. Grimes 	}
4629b50d902SRodney W. Grimes 	for (n = 1; n < argc ; n++) {
4634dac6235SHajimu UMEMOTO 		src = rindex(argv[n], ':');
4649b50d902SRodney W. Grimes 		if (src == NULL)
4659b50d902SRodney W. Grimes 			src = argv[n];
4669b50d902SRodney W. Grimes 		else {
4674dac6235SHajimu UMEMOTO 			char *lcp;
4689b50d902SRodney W. Grimes 
4699b50d902SRodney W. Grimes 			*src++ = 0;
4704dac6235SHajimu UMEMOTO 			lcp = argv[n];
4714dac6235SHajimu UMEMOTO 			if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') {
4724dac6235SHajimu UMEMOTO 				lcp[strlen(lcp) - 1] = '\0';
4734dac6235SHajimu UMEMOTO 				lcp++;
4749b50d902SRodney W. Grimes 			}
4754dac6235SHajimu UMEMOTO 			setpeer0(lcp, NULL);
4764dac6235SHajimu UMEMOTO 			if (!connected)
4774dac6235SHajimu UMEMOTO 				continue;
4789b50d902SRodney W. Grimes 		}
4799b50d902SRodney W. Grimes 		if (argc < 4) {
4809b50d902SRodney W. Grimes 			cp = argc == 3 ? argv[2] : tail(src);
4819b50d902SRodney W. Grimes 			fd = creat(cp, 0644);
4829b50d902SRodney W. Grimes 			if (fd < 0) {
483fd129a02SPhilippe Charnier 				warn("%s", cp);
4849b50d902SRodney W. Grimes 				return;
4859b50d902SRodney W. Grimes 			}
4869b50d902SRodney W. Grimes 			if (verbose)
4879b50d902SRodney W. Grimes 				printf("getting from %s:%s to %s [%s]\n",
4889b50d902SRodney W. Grimes 					hostname, src, cp, mode);
4899b50d902SRodney W. Grimes 			recvfile(fd, src, mode);
4909b50d902SRodney W. Grimes 			break;
4919b50d902SRodney W. Grimes 		}
4929b50d902SRodney W. Grimes 		cp = tail(src);         /* new .. jdg */
4939b50d902SRodney W. Grimes 		fd = creat(cp, 0644);
4949b50d902SRodney W. Grimes 		if (fd < 0) {
495fd129a02SPhilippe Charnier 			warn("%s", cp);
4969b50d902SRodney W. Grimes 			continue;
4979b50d902SRodney W. Grimes 		}
4989b50d902SRodney W. Grimes 		if (verbose)
4999b50d902SRodney W. Grimes 			printf("getting from %s:%s to %s [%s]\n",
5009b50d902SRodney W. Grimes 				hostname, src, cp, mode);
5019b50d902SRodney W. Grimes 		recvfile(fd, src, mode);
5029b50d902SRodney W. Grimes 	}
5039b50d902SRodney W. Grimes }
5049b50d902SRodney W. Grimes 
5059b50d902SRodney W. Grimes static void
5069b50d902SRodney W. Grimes getusage(s)
5079b50d902SRodney W. Grimes 	char *s;
5089b50d902SRodney W. Grimes {
5099b50d902SRodney W. Grimes 	printf("usage: %s host:file host:file ... file, or\n", s);
5109b50d902SRodney W. Grimes 	printf("       %s file file ... file if connected\n", s);
5119b50d902SRodney W. Grimes }
5129b50d902SRodney W. Grimes 
5139b50d902SRodney W. Grimes int	rexmtval = TIMEOUT;
5149b50d902SRodney W. Grimes 
5159b50d902SRodney W. Grimes void
5169b50d902SRodney W. Grimes setrexmt(argc, argv)
5179b50d902SRodney W. Grimes 	int argc;
5189b50d902SRodney W. Grimes 	char *argv[];
5199b50d902SRodney W. Grimes {
5209b50d902SRodney W. Grimes 	int t;
5219b50d902SRodney W. Grimes 
5229b50d902SRodney W. Grimes 	if (argc < 2) {
5239b50d902SRodney W. Grimes 		strcpy(line, "Rexmt-timeout ");
5249b50d902SRodney W. Grimes 		printf("(value) ");
525ca22ff9eSJoerg Wunsch 		fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
5269b50d902SRodney W. Grimes 		makeargv();
5279b50d902SRodney W. Grimes 		argc = margc;
5289b50d902SRodney W. Grimes 		argv = margv;
5299b50d902SRodney W. Grimes 	}
5309b50d902SRodney W. Grimes 	if (argc != 2) {
5319b50d902SRodney W. Grimes 		printf("usage: %s value\n", argv[0]);
5329b50d902SRodney W. Grimes 		return;
5339b50d902SRodney W. Grimes 	}
5349b50d902SRodney W. Grimes 	t = atoi(argv[1]);
5359b50d902SRodney W. Grimes 	if (t < 0)
5369b50d902SRodney W. Grimes 		printf("%s: bad value\n", argv[1]);
5379b50d902SRodney W. Grimes 	else
5389b50d902SRodney W. Grimes 		rexmtval = t;
5399b50d902SRodney W. Grimes }
5409b50d902SRodney W. Grimes 
5419b50d902SRodney W. Grimes int	maxtimeout = 5 * TIMEOUT;
5429b50d902SRodney W. Grimes 
5439b50d902SRodney W. Grimes void
5449b50d902SRodney W. Grimes settimeout(argc, argv)
5459b50d902SRodney W. Grimes 	int argc;
5469b50d902SRodney W. Grimes 	char *argv[];
5479b50d902SRodney W. Grimes {
5489b50d902SRodney W. Grimes 	int t;
5499b50d902SRodney W. Grimes 
5509b50d902SRodney W. Grimes 	if (argc < 2) {
5519b50d902SRodney W. Grimes 		strcpy(line, "Maximum-timeout ");
5529b50d902SRodney W. Grimes 		printf("(value) ");
553ca22ff9eSJoerg Wunsch 		fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
5549b50d902SRodney W. Grimes 		makeargv();
5559b50d902SRodney W. Grimes 		argc = margc;
5569b50d902SRodney W. Grimes 		argv = margv;
5579b50d902SRodney W. Grimes 	}
5589b50d902SRodney W. Grimes 	if (argc != 2) {
5599b50d902SRodney W. Grimes 		printf("usage: %s value\n", argv[0]);
5609b50d902SRodney W. Grimes 		return;
5619b50d902SRodney W. Grimes 	}
5629b50d902SRodney W. Grimes 	t = atoi(argv[1]);
5639b50d902SRodney W. Grimes 	if (t < 0)
5649b50d902SRodney W. Grimes 		printf("%s: bad value\n", argv[1]);
5659b50d902SRodney W. Grimes 	else
5669b50d902SRodney W. Grimes 		maxtimeout = t;
5679b50d902SRodney W. Grimes }
5689b50d902SRodney W. Grimes 
5699b50d902SRodney W. Grimes void
5709b50d902SRodney W. Grimes status(argc, argv)
5718049f797SMark Murray 	int argc __unused;
5728049f797SMark Murray 	char *argv[] __unused;
5739b50d902SRodney W. Grimes {
5749b50d902SRodney W. Grimes 	if (connected)
5759b50d902SRodney W. Grimes 		printf("Connected to %s.\n", hostname);
5769b50d902SRodney W. Grimes 	else
5779b50d902SRodney W. Grimes 		printf("Not connected.\n");
5789b50d902SRodney W. Grimes 	printf("Mode: %s Verbose: %s Tracing: %s\n", mode,
5799b50d902SRodney W. Grimes 		verbose ? "on" : "off", trace ? "on" : "off");
5809b50d902SRodney W. Grimes 	printf("Rexmt-interval: %d seconds, Max-timeout: %d seconds\n",
5819b50d902SRodney W. Grimes 		rexmtval, maxtimeout);
5829b50d902SRodney W. Grimes }
5839b50d902SRodney W. Grimes 
5849b50d902SRodney W. Grimes void
5858049f797SMark Murray intr(dummy)
5868049f797SMark Murray 	int dummy __unused;
5879b50d902SRodney W. Grimes {
5889b50d902SRodney W. Grimes 
5899b50d902SRodney W. Grimes 	signal(SIGALRM, SIG_IGN);
5909b50d902SRodney W. Grimes 	alarm(0);
5919b50d902SRodney W. Grimes 	longjmp(toplevel, -1);
5929b50d902SRodney W. Grimes }
5939b50d902SRodney W. Grimes 
5949b50d902SRodney W. Grimes char *
5959b50d902SRodney W. Grimes tail(filename)
5969b50d902SRodney W. Grimes 	char *filename;
5979b50d902SRodney W. Grimes {
5988049f797SMark Murray 	char *s;
5999b50d902SRodney W. Grimes 
6009b50d902SRodney W. Grimes 	while (*filename) {
6019b50d902SRodney W. Grimes 		s = rindex(filename, '/');
6029b50d902SRodney W. Grimes 		if (s == NULL)
6039b50d902SRodney W. Grimes 			break;
6049b50d902SRodney W. Grimes 		if (s[1])
6059b50d902SRodney W. Grimes 			return (s + 1);
6069b50d902SRodney W. Grimes 		*s = '\0';
6079b50d902SRodney W. Grimes 	}
6089b50d902SRodney W. Grimes 	return (filename);
6099b50d902SRodney W. Grimes }
6109b50d902SRodney W. Grimes 
611c33ed450SMatthew N. Dodd static const char *
6128979160aSBruce Evans command_prompt()
6138979160aSBruce Evans {
6148979160aSBruce Evans 
615c33ed450SMatthew N. Dodd 	return ("tftp> ");
616c33ed450SMatthew N. Dodd }
617c33ed450SMatthew N. Dodd 
6189b50d902SRodney W. Grimes /*
6199b50d902SRodney W. Grimes  * Command parser.
6209b50d902SRodney W. Grimes  */
621eaa86f9dSBruce Evans static void
6229b50d902SRodney W. Grimes command()
6239b50d902SRodney W. Grimes {
624c33ed450SMatthew N. Dodd 	HistEvent he;
6258049f797SMark Murray 	struct cmd *c;
6268979160aSBruce Evans 	static EditLine *el;
6278979160aSBruce Evans 	static History *hist;
628c33ed450SMatthew N. Dodd 	const char *bp;
6298979160aSBruce Evans 	char *cp;
6308049f797SMark Murray 	int len, num, vrbose;
631c33ed450SMatthew N. Dodd 
6328049f797SMark Murray 	vrbose = isatty(0);
6338049f797SMark Murray 	if (vrbose) {
634c33ed450SMatthew N. Dodd 		el = el_init("tftp", stdin, stdout, stderr);
635c33ed450SMatthew N. Dodd 		hist = history_init();
636c33ed450SMatthew N. Dodd 		history(hist, &he, H_EVENT, 100);
637c33ed450SMatthew N. Dodd 		el_set(el, EL_HIST, history, hist);
638c33ed450SMatthew N. Dodd 		el_set(el, EL_EDITOR, "emacs");
639c33ed450SMatthew N. Dodd 		el_set(el, EL_PROMPT, command_prompt);
640c33ed450SMatthew N. Dodd 		el_set(el, EL_SIGNAL, 1);
641c33ed450SMatthew N. Dodd 		el_source(el, NULL);
642c33ed450SMatthew N. Dodd 	}
6439b50d902SRodney W. Grimes 	for (;;) {
6448049f797SMark Murray 		if (vrbose) {
645c33ed450SMatthew N. Dodd                         if ((bp = el_gets(el, &num)) == NULL || num == 0)
646c33ed450SMatthew N. Dodd                                 exit(0);
647c33ed450SMatthew N. Dodd                         len = (num > MAXLINE) ? MAXLINE : num;
648c33ed450SMatthew N. Dodd                         memcpy(line, bp, len);
649c33ed450SMatthew N. Dodd                         line[len] = '\0';
650c33ed450SMatthew N. Dodd                         history(hist, &he, H_ENTER, bp);
651c33ed450SMatthew N. Dodd 		} else {
652ca22ff9eSJoerg Wunsch 			if (fgets(line, sizeof line , stdin) == 0) {
6539b50d902SRodney W. Grimes 				if (feof(stdin)) {
6549b50d902SRodney W. Grimes 					exit(0);
6559b50d902SRodney W. Grimes 				} else {
6569b50d902SRodney W. Grimes 					continue;
6579b50d902SRodney W. Grimes 				}
6589b50d902SRodney W. Grimes 			}
659c33ed450SMatthew N. Dodd 		}
660ca22ff9eSJoerg Wunsch 		if ((cp = strchr(line, '\n')))
661ca22ff9eSJoerg Wunsch 			*cp = '\0';
6629b50d902SRodney W. Grimes 		if (line[0] == 0)
6639b50d902SRodney W. Grimes 			continue;
6649b50d902SRodney W. Grimes 		makeargv();
6659b50d902SRodney W. Grimes 		if (margc == 0)
6669b50d902SRodney W. Grimes 			continue;
6679b50d902SRodney W. Grimes 		c = getcmd(margv[0]);
6689b50d902SRodney W. Grimes 		if (c == (struct cmd *)-1) {
6699b50d902SRodney W. Grimes 			printf("?Ambiguous command\n");
6709b50d902SRodney W. Grimes 			continue;
6719b50d902SRodney W. Grimes 		}
6729b50d902SRodney W. Grimes 		if (c == 0) {
6739b50d902SRodney W. Grimes 			printf("?Invalid command\n");
6749b50d902SRodney W. Grimes 			continue;
6759b50d902SRodney W. Grimes 		}
6769b50d902SRodney W. Grimes 		(*c->handler)(margc, margv);
6779b50d902SRodney W. Grimes 	}
6789b50d902SRodney W. Grimes }
6799b50d902SRodney W. Grimes 
6809b50d902SRodney W. Grimes struct cmd *
6819b50d902SRodney W. Grimes getcmd(name)
6828049f797SMark Murray 	char *name;
6839b50d902SRodney W. Grimes {
6848049f797SMark Murray 	const char *p, *q;
6858049f797SMark Murray 	struct cmd *c, *found;
6868049f797SMark Murray 	int nmatches, longest;
6879b50d902SRodney W. Grimes 
6889b50d902SRodney W. Grimes 	longest = 0;
6899b50d902SRodney W. Grimes 	nmatches = 0;
6909b50d902SRodney W. Grimes 	found = 0;
6919b50d902SRodney W. Grimes 	for (c = cmdtab; (p = c->name) != NULL; c++) {
6929b50d902SRodney W. Grimes 		for (q = name; *q == *p++; q++)
6939b50d902SRodney W. Grimes 			if (*q == 0)		/* exact match? */
6949b50d902SRodney W. Grimes 				return (c);
6959b50d902SRodney W. Grimes 		if (!*q) {			/* the name was a prefix */
6969b50d902SRodney W. Grimes 			if (q - name > longest) {
6979b50d902SRodney W. Grimes 				longest = q - name;
6989b50d902SRodney W. Grimes 				nmatches = 1;
6999b50d902SRodney W. Grimes 				found = c;
7009b50d902SRodney W. Grimes 			} else if (q - name == longest)
7019b50d902SRodney W. Grimes 				nmatches++;
7029b50d902SRodney W. Grimes 		}
7039b50d902SRodney W. Grimes 	}
7049b50d902SRodney W. Grimes 	if (nmatches > 1)
7059b50d902SRodney W. Grimes 		return ((struct cmd *)-1);
7069b50d902SRodney W. Grimes 	return (found);
7079b50d902SRodney W. Grimes }
7089b50d902SRodney W. Grimes 
7099b50d902SRodney W. Grimes /*
7109b50d902SRodney W. Grimes  * Slice a string up into argc/argv.
7119b50d902SRodney W. Grimes  */
7129b50d902SRodney W. Grimes static void
7139b50d902SRodney W. Grimes makeargv()
7149b50d902SRodney W. Grimes {
7158049f797SMark Murray 	char *cp;
7168049f797SMark Murray 	char **argp = margv;
7179b50d902SRodney W. Grimes 
7189b50d902SRodney W. Grimes 	margc = 0;
719ca22ff9eSJoerg Wunsch 	if ((cp = strchr(line, '\n')))
720ca22ff9eSJoerg Wunsch 		*cp = '\0';
7219b50d902SRodney W. Grimes 	for (cp = line; *cp;) {
7229b50d902SRodney W. Grimes 		while (isspace(*cp))
7239b50d902SRodney W. Grimes 			cp++;
7249b50d902SRodney W. Grimes 		if (*cp == '\0')
7259b50d902SRodney W. Grimes 			break;
7269b50d902SRodney W. Grimes 		*argp++ = cp;
7279b50d902SRodney W. Grimes 		margc += 1;
7289b50d902SRodney W. Grimes 		while (*cp != '\0' && !isspace(*cp))
7299b50d902SRodney W. Grimes 			cp++;
7309b50d902SRodney W. Grimes 		if (*cp == '\0')
7319b50d902SRodney W. Grimes 			break;
7329b50d902SRodney W. Grimes 		*cp++ = '\0';
7339b50d902SRodney W. Grimes 	}
7349b50d902SRodney W. Grimes 	*argp++ = 0;
7359b50d902SRodney W. Grimes }
7369b50d902SRodney W. Grimes 
7379b50d902SRodney W. Grimes void
7389b50d902SRodney W. Grimes quit(argc, argv)
7398049f797SMark Murray 	int argc __unused;
7408049f797SMark Murray 	char *argv[] __unused;
7419b50d902SRodney W. Grimes {
7429b50d902SRodney W. Grimes 
7439b50d902SRodney W. Grimes 	exit(0);
7449b50d902SRodney W. Grimes }
7459b50d902SRodney W. Grimes 
7469b50d902SRodney W. Grimes /*
7479b50d902SRodney W. Grimes  * Help command.
7489b50d902SRodney W. Grimes  */
7499b50d902SRodney W. Grimes void
7509b50d902SRodney W. Grimes help(argc, argv)
7519b50d902SRodney W. Grimes 	int argc;
7529b50d902SRodney W. Grimes 	char *argv[];
7539b50d902SRodney W. Grimes {
7548049f797SMark Murray 	struct cmd *c;
7559b50d902SRodney W. Grimes 
7569b50d902SRodney W. Grimes 	if (argc == 1) {
7579b50d902SRodney W. Grimes 		printf("Commands may be abbreviated.  Commands are:\n\n");
7589b50d902SRodney W. Grimes 		for (c = cmdtab; c->name; c++)
7599b50d902SRodney W. Grimes 			printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help);
7609b50d902SRodney W. Grimes 		return;
7619b50d902SRodney W. Grimes 	}
7629b50d902SRodney W. Grimes 	while (--argc > 0) {
7638049f797SMark Murray 		char *arg;
7649b50d902SRodney W. Grimes 		arg = *++argv;
7659b50d902SRodney W. Grimes 		c = getcmd(arg);
7669b50d902SRodney W. Grimes 		if (c == (struct cmd *)-1)
7679b50d902SRodney W. Grimes 			printf("?Ambiguous help command %s\n", arg);
7689b50d902SRodney W. Grimes 		else if (c == (struct cmd *)0)
7699b50d902SRodney W. Grimes 			printf("?Invalid help command %s\n", arg);
7709b50d902SRodney W. Grimes 		else
7719b50d902SRodney W. Grimes 			printf("%s\n", c->help);
7729b50d902SRodney W. Grimes 	}
7739b50d902SRodney W. Grimes }
7749b50d902SRodney W. Grimes 
7759b50d902SRodney W. Grimes void
7769b50d902SRodney W. Grimes settrace(argc, argv)
7778049f797SMark Murray 	int argc __unused;
7788049f797SMark Murray 	char **argv __unused;
7799b50d902SRodney W. Grimes {
7809b50d902SRodney W. Grimes 	trace = !trace;
7819b50d902SRodney W. Grimes 	printf("Packet tracing %s.\n", trace ? "on" : "off");
7829b50d902SRodney W. Grimes }
7839b50d902SRodney W. Grimes 
7849b50d902SRodney W. Grimes void
7859b50d902SRodney W. Grimes setverbose(argc, argv)
7868049f797SMark Murray 	int argc __unused;
7878049f797SMark Murray 	char **argv __unused;
7889b50d902SRodney W. Grimes {
7899b50d902SRodney W. Grimes 	verbose = !verbose;
7909b50d902SRodney W. Grimes 	printf("Verbose mode %s.\n", verbose ? "on" : "off");
7919b50d902SRodney W. Grimes }
792