ftp/ftp/cmds.c

/*
 * Copyright (c) 1985, 1989, 1993, 1994
 *	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 the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * FTP User Program -- Command Routines.
 */

#include "ftp_locl.h"
RCSID("$Id: cmds.c 15673 2005-07-19 18:19:33Z lha $");

typedef void (*sighand)(int);

jmp_buf	jabort;
char   *mname;
char   *home = "/";

/*
 * `Another' gets another argument, and stores the new argc and argv.
 * It reverts to the top level (via main.c's intr()) on EOF/error.
 *
 * Returns false if no new arguments have been added.
 */
int
another(int *pargc, char ***pargv, char *prompt)
{
	int len = strlen(line), ret;

	if (len >= sizeof(line) - 3) {
		printf("sorry, arguments too long\n");
		intr(0);
	}
	printf("(%s) ", prompt);
	line[len++] = ' ';
	if (fgets(&line[len], sizeof(line) - len, stdin) == NULL)
		intr(0);
	len += strlen(&line[len]);
	if (len > 0 && line[len - 1] == '\n')
		line[len - 1] = '\0';
	makeargv();
	ret = margc > *pargc;
	*pargc = margc;
	*pargv = margv;
	return (ret);
}

/*
 * Connect to peer server and
 * auto-login, if possible.
 */
void
setpeer(int argc, char **argv)
{
	char *host;
	u_short port;
	struct servent *sp;

	if (connected) {
		printf("Already connected to %s, use close first.\n",
			hostname);
		code = -1;
		return;
	}
	if (argc < 2)
		another(&argc, &argv, "to");
	if (argc < 2 || argc > 3) {
		printf("usage: %s host-name [port]\n", argv[0]);
		code = -1;
		return;
	}
	sp = getservbyname("ftp", "tcp");
	if (sp == NULL)
		errx(1, "You bastard. You removed ftp/tcp from services");
	port = sp->s_port;
	if (argc > 2) {
		sp = getservbyname(argv[2], "tcp");
		if (sp != NULL) {
			port = sp->s_port;
		} else {
			char *ep;

			port = strtol(argv[2], &ep, 0);
			if (argv[2] == ep) {
				printf("%s: bad port number-- %s\n",
				       argv[1], argv[2]);
				printf ("usage: %s host-name [port]\n",
					argv[0]);
				code = -1;
				return;
			}
			port = htons(port);
		}
	}
	host = hookup(argv[1], port);
	if (host) {
		int overbose;

		connected = 1;
		/*
		 * Set up defaults for FTP.
		 */
		strlcpy(typename, "ascii", sizeof(typename));
		type = TYPE_A;
		curtype = TYPE_A;
		strlcpy(formname, "non-print", sizeof(formname));
		form = FORM_N;
		strlcpy(modename, "stream", sizeof(modename));
		mode = MODE_S;
		strlcpy(structname, "file", sizeof(structname));
		stru = STRU_F;
		strlcpy(bytename, "8", sizeof(bytename));
		bytesize = 8;
		if (autologin)
			login(argv[1]);

#if (defined(unix) || defined(__unix__) || defined(__unix) || defined(_AIX) || defined(_CRAY) || defined(__NetBSD__) || defined(__APPLE__)) && NBBY == 8
/*
 * this ifdef is to keep someone form "porting" this to an incompatible
 * system and not checking this out. This way they have to think about it.
 */
		overbose = verbose;
		if (debug == 0)
			verbose = -1;
		if (command("SYST") == COMPLETE && overbose && strlen(reply_string) > 4) {
			char *cp, *p;

			cp = strdup(reply_string + 4);
			if (cp == NULL)
			    errx(1, "strdup: out of memory");
			p = strchr(cp, ' ');
			if (p == NULL)
				p = strchr(cp, '\r');
			if (p) {
				if (p[-1] == '.')
					p--;
				*p = '\0';
			}

			printf("Remote system type is %s.\n", cp);
			free(cp);
		}
		if (!strncmp(reply_string, "215 UNIX Type: L8", 17)) {
			if (proxy)
				unix_proxy = 1;
			else
				unix_server = 1;
			/*
			 * Set type to 0 (not specified by user),
			 * meaning binary by default, but don't bother
			 * telling server.  We can use binary
			 * for text files unless changed by the user.
			 */
			type = 0;
			strlcpy(typename, "binary", sizeof(typename));
			if (overbose)
			    printf("Using %s mode to transfer files.\n",
				typename);
		} else {
			if (proxy)
				unix_proxy = 0;
			else
				unix_server = 0;
			if (overbose &&
			    !strncmp(reply_string, "215 TOPS20", 10))
				printf(
"Remember to set tenex mode when transfering binary files from this machine.\n");
		}
		verbose = overbose;
#endif /* unix */
	}
}

struct	types {
	char	*t_name;
	char	*t_mode;
	int	t_type;
	char	*t_arg;
} types[] = {
	{ "ascii",	"A",	TYPE_A,	0 },
	{ "binary",	"I",	TYPE_I,	0 },
	{ "image",	"I",	TYPE_I,	0 },
	{ "ebcdic",	"E",	TYPE_E,	0 },
	{ "tenex",	"L",	TYPE_L,	bytename },
	{ NULL }
};

/*
 * Set transfer type.
 */
void
settype(int argc, char **argv)
{
	struct types *p;
	int comret;

	if (argc > 2) {
		char *sep;

		printf("usage: %s [", argv[0]);
		sep = " ";
		for (p = types; p->t_name; p++) {
			printf("%s%s", sep, p->t_name);
			sep = " | ";
		}
		printf(" ]\n");
		code = -1;
		return;
	}
	if (argc < 2) {
		printf("Using %s mode to transfer files.\n", typename);
		code = 0;
		return;
	}
	for (p = types; p->t_name; p++)
		if (strcmp(argv[1], p->t_name) == 0)
			break;
	if (p->t_name == 0) {
		printf("%s: unknown mode\n", argv[1]);
		code = -1;
		return;
	}
	if ((p->t_arg != NULL) && (*(p->t_arg) != '\0'))
		comret = command ("TYPE %s %s", p->t_mode, p->t_arg);
	else
		comret = command("TYPE %s", p->t_mode);
	if (comret == COMPLETE) {
		strlcpy(typename, p->t_name, sizeof(typename));
		curtype = type = p->t_type;
	}
}

/*
 * Internal form of settype; changes current type in use with server
 * without changing our notion of the type for data transfers.
 * Used to change to and from ascii for listings.
 */
void
changetype(int newtype, int show)
{
	struct types *p;
	int comret, oldverbose = verbose;

	if (newtype == 0)
		newtype = TYPE_I;
	if (newtype == curtype)
		return;
	if (debug == 0 && show == 0)
		verbose = 0;
	for (p = types; p->t_name; p++)
		if (newtype == p->t_type)
			break;
	if (p->t_name == 0) {
		printf("ftp: internal error: unknown type %d\n", newtype);
		return;
	}
	if (newtype == TYPE_L && bytename[0] != '\0')
		comret = command("TYPE %s %s", p->t_mode, bytename);
	else
		comret = command("TYPE %s", p->t_mode);
	if (comret == COMPLETE)
		curtype = newtype;
	verbose = oldverbose;
}

char *stype[] = {
	"type",
	"",
	0
};

/*
 * Set binary transfer type.
 */
/*VARARGS*/
void
setbinary(int argc, char **argv)
{

	stype[1] = "binary";
	settype(2, stype);
}

/*
 * Set ascii transfer type.
 */
/*VARARGS*/
void
setascii(int argc, char **argv)
{

	stype[1] = "ascii";
	settype(2, stype);
}

/*
 * Set tenex transfer type.
 */
/*VARARGS*/
void
settenex(int argc, char **argv)
{

	stype[1] = "tenex";
	settype(2, stype);
}

/*
 * Set file transfer mode.
 */
/*ARGSUSED*/
void
setftmode(int argc, char **argv)
{

	printf("We only support %s mode, sorry.\n", modename);
	code = -1;
}

/*
 * Set file transfer format.
 */
/*ARGSUSED*/
void
setform(int argc, char **argv)
{

	printf("We only support %s format, sorry.\n", formname);
	code = -1;
}

/*
 * Set file transfer structure.
 */
/*ARGSUSED*/
void
setstruct(int argc, char **argv)
{

	printf("We only support %s structure, sorry.\n", structname);
	code = -1;
}

/*
 * Send a single file.
 */
void
put(int argc, char **argv)
{
	char *cmd;
	int loc = 0;
	char *oldargv1, *oldargv2;

	if (argc == 2) {
		argc++;
		argv[2] = argv[1];
		loc++;
	}
	if (argc < 2 && !another(&argc, &argv, "local-file"))
		goto usage;
	if (argc < 3 && !another(&argc, &argv, "remote-file")) {
usage:
		printf("usage: %s local-file remote-file\n", argv[0]);
		code = -1;
		return;
	}
	oldargv1 = argv[1];
	oldargv2 = argv[2];
	if (!globulize(&argv[1])) {
		code = -1;
		return;
	}
	/*
	 * If "globulize" modifies argv[1], and argv[2] is a copy of
	 * the old argv[1], make it a copy of the new argv[1].
	 */
	if (argv[1] != oldargv1 && argv[2] == oldargv1) {
		argv[2] = argv[1];
	}
	cmd = (argv[0][0] == 'a') ? "APPE" : ((sunique) ? "STOU" : "STOR");
	if (loc && ntflag) {
		argv[2] = dotrans(argv[2]);
	}
	if (loc && mapflag) {
		argv[2] = domap(argv[2]);
	}
	sendrequest(cmd, argv[1], argv[2],
		    curtype == TYPE_I ? "rb" : "r",
		    argv[1] != oldargv1 || argv[2] != oldargv2);
}

/* ARGSUSED */
static RETSIGTYPE
mabort(int signo)
{
	int ointer;

	printf("\n");
	fflush(stdout);
	if (mflag && fromatty) {
		ointer = interactive;
		interactive = 1;
		if (confirm("Continue with", mname)) {
			interactive = ointer;
			longjmp(jabort,0);
		}
		interactive = ointer;
	}
	mflag = 0;
	longjmp(jabort,0);
}

/*
 * Send multiple files.
 */
void
mput(int argc, char **argv)
{
    int i;
    RETSIGTYPE (*oldintr)(int);
    int ointer;
    char *tp;

    if (argc < 2 && !another(&argc, &argv, "local-files")) {
	printf("usage: %s local-files\n", argv[0]);
	code = -1;
	return;
    }
    mname = argv[0];
    mflag = 1;
    oldintr = signal(SIGINT, mabort);
    setjmp(jabort);
    if (proxy) {
	char *cp, *tp2, tmpbuf[MaxPathLen];

	while ((cp = remglob(argv,0)) != NULL) {
	    if (*cp == 0) {
		mflag = 0;
		continue;
	    }
	    if (mflag && confirm(argv[0], cp)) {
		tp = cp;
		if (mcase) {
		    while (*tp && !islower((unsigned char)*tp)) {
			tp++;
		    }
		    if (!*tp) {
			tp = cp;
			tp2 = tmpbuf;
			while ((*tp2 = *tp) != '\0') {
			    if (isupper((unsigned char)*tp2)) {
				*tp2 = 'a' + *tp2 - 'A';
			    }
			    tp++;
			    tp2++;
			}
		    }
		    tp = tmpbuf;
		}
		if (ntflag) {
		    tp = dotrans(tp);
		}
		if (mapflag) {
		    tp = domap(tp);
		}
		sendrequest((sunique) ? "STOU" : "STOR",
			    cp, tp,
			    curtype == TYPE_I ? "rb" : "r",
			    cp != tp || !interactive);
		if (!mflag && fromatty) {
		    ointer = interactive;
		    interactive = 1;
		    if (confirm("Continue with","mput")) {
			mflag++;
		    }
		    interactive = ointer;
		}
	    }
	}
	signal(SIGINT, oldintr);
	mflag = 0;
	return;
    }
    for (i = 1; i < argc; i++) {
	char **cpp;
	glob_t gl;
	int flags;

	if (!doglob) {
	    if (mflag && confirm(argv[0], argv[i])) {
		tp = (ntflag) ? dotrans(argv[i]) : argv[i];
		tp = (mapflag) ? domap(tp) : tp;
		sendrequest((sunique) ? "STOU" : "STOR",
			    argv[i],
			    curtype == TYPE_I ? "rb" : "r",
			    tp, tp != argv[i] || !interactive);
		if (!mflag && fromatty) {
		    ointer = interactive;
		    interactive = 1;
		    if (confirm("Continue with","mput")) {
			mflag++;
		    }
		    interactive = ointer;
		}
	    }
	    continue;
	}

	memset(&gl, 0, sizeof(gl));
	flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_QUOTE|GLOB_TILDE;
	if (glob(argv[i], flags, NULL, &gl) || gl.gl_pathc == 0) {
	    warnx("%s: not found", argv[i]);
	    globfree(&gl);
	    continue;
	}
	for (cpp = gl.gl_pathv; cpp && *cpp != NULL; cpp++) {
	    if (mflag && confirm(argv[0], *cpp)) {
		tp = (ntflag) ? dotrans(*cpp) : *cpp;
		tp = (mapflag) ? domap(tp) : tp;
		sendrequest((sunique) ? "STOU" : "STOR",
			    *cpp, tp,
			    curtype == TYPE_I ? "rb" : "r",
			    *cpp != tp || !interactive);
		if (!mflag && fromatty) {
		    ointer = interactive;
		    interactive = 1;
		    if (confirm("Continue with","mput")) {
			mflag++;
		    }
		    interactive = ointer;
		}
	    }
	}
	globfree(&gl);
    }
    signal(SIGINT, oldintr);
    mflag = 0;
}

void
reget(int argc, char **argv)
{
    getit(argc, argv, 1, curtype == TYPE_I ? "r+wb" : "r+w");
}

void
get(int argc, char **argv)
{
    char *filemode;

    if (restart_point) {
	if (curtype == TYPE_I)
	    filemode = "r+wb";
	else
	    filemode = "r+w";
    } else {
	if (curtype == TYPE_I)
	    filemode = "wb";
	else
	    filemode = "w";
    }

    getit(argc, argv, 0, filemode);
}

/*
 * Receive one file.
 */
int
getit(int argc, char **argv, int restartit, char *filemode)
{
	int loc = 0;
	int local_given = 1;
	char *oldargv1, *oldargv2;

	if (argc == 2) {
		argc++;
		local_given = 0;
		argv[2] = argv[1];
		loc++;
	}
	if ((argc < 2 && !another(&argc, &argv, "remote-file")) ||
	    (argc < 3 && !another(&argc, &argv, "local-file"))) {
		printf("usage: %s remote-file [ local-file ]\n", argv[0]);
		code = -1;
		return (0);
	}
	oldargv1 = argv[1];
	oldargv2 = argv[2];
	if (!globulize(&argv[2])) {
		code = -1;
		return (0);
	}
	if (loc && mcase) {
		char *tp = argv[1], *tp2, tmpbuf[MaxPathLen];

		while (*tp && !islower((unsigned char)*tp)) {
			tp++;
		}
		if (!*tp) {
			tp = argv[2];
			tp2 = tmpbuf;
			while ((*tp2 = *tp) != '\0') {
				if (isupper((unsigned char)*tp2)) {
					*tp2 = 'a' + *tp2 - 'A';
				}
				tp++;
				tp2++;
			}
			argv[2] = tmpbuf;
		}
	}
	if (loc && ntflag)
		argv[2] = dotrans(argv[2]);
	if (loc && mapflag)
		argv[2] = domap(argv[2]);
	if (restartit) {
		struct stat stbuf;
		int ret;

		ret = stat(argv[2], &stbuf);
		if (restartit == 1) {
			if (ret < 0) {
				warn("local: %s", argv[2]);
				return (0);
			}
			restart_point = stbuf.st_size;
		} else if (ret == 0) {
			int overbose;
			int cmdret;
			int yy, mo, day, hour, min, sec;
			struct tm *tm;
			time_t mtime = stbuf.st_mtime;

			overbose = verbose;
			if (debug == 0)
				verbose = -1;
			cmdret = command("MDTM %s", argv[1]);
			verbose = overbose;
			if (cmdret != COMPLETE) {
				printf("%s\n", reply_string);
				return (0);
			}
			if (sscanf(reply_string,
				   "%*s %04d%02d%02d%02d%02d%02d",
				   &yy, &mo, &day, &hour, &min, &sec)
			    != 6) {
				printf ("bad MDTM result\n");
				return (0);
			}

			tm = gmtime(&mtime);
			tm->tm_mon++;
			tm->tm_year += 1900;

			if ((tm->tm_year > yy) ||
			    (tm->tm_year == yy &&
			     tm->tm_mon > mo) ||
			    (tm->tm_mon == mo &&
			     tm->tm_mday > day) ||
			    (tm->tm_mday == day &&
			     tm->tm_hour > hour) ||
			    (tm->tm_hour == hour &&
			     tm->tm_min > min) ||
			    (tm->tm_min == min &&
			     tm->tm_sec > sec))
				return (1);
		}
	}

	recvrequest("RETR", argv[2], argv[1], filemode,
		    argv[1] != oldargv1 || argv[2] != oldargv2, local_given);
	restart_point = 0;
	return (0);
}

static int
suspicious_filename(const char *fn)
{
    return strstr(fn, "../") != NULL || *fn == '/';
}

/*
 * Get multiple files.
 */
void
mget(int argc, char **argv)
{
	sighand oldintr;
	int ch, ointer;
	char *cp, *tp, *tp2, tmpbuf[MaxPathLen];

	if (argc < 2 && !another(&argc, &argv, "remote-files")) {
		printf("usage: %s remote-files\n", argv[0]);
		code = -1;
		return;
	}
	mname = argv[0];
	mflag = 1;
	oldintr = signal(SIGINT, mabort);
	setjmp(jabort);
	while ((cp = remglob(argv,proxy)) != NULL) {
		if (*cp == '\0') {
			mflag = 0;
			continue;
		}
		if (mflag && suspicious_filename(cp))
		    printf("*** Suspicious filename: %s\n", cp);
		if (mflag && confirm(argv[0], cp)) {
			tp = cp;
			if (mcase) {
				for (tp2 = tmpbuf;(ch = (unsigned char)*tp++);)
					*tp2++ = tolower(ch);
				*tp2 = '\0';
				tp = tmpbuf;
			}
			if (ntflag) {
				tp = dotrans(tp);
			}
			if (mapflag) {
				tp = domap(tp);
			}
			recvrequest("RETR", tp, cp,
				    curtype == TYPE_I ? "wb" : "w",
				    tp != cp || !interactive, 0);
			if (!mflag && fromatty) {
				ointer = interactive;
				interactive = 1;
				if (confirm("Continue with","mget")) {
					mflag++;
				}
				interactive = ointer;
			}
		}
	}
	signal(SIGINT,oldintr);
	mflag = 0;
}

char *
remglob(char **argv, int doswitch)
{
    char temp[16];
    static char buf[MaxPathLen];
    static FILE *ftemp = NULL;
    static char **args;
    int oldverbose, oldhash;
    char *cp, *filemode;

    if (!mflag) {
	if (!doglob) {
	    args = NULL;
	}
	else {
	    if (ftemp) {
		fclose(ftemp);
		ftemp = NULL;
	    }
	}
	return (NULL);
    }
    if (!doglob) {
	if (args == NULL)
	    args = argv;
	if ((cp = *++args) == NULL)
	    args = NULL;
	return (cp);
    }
    if (ftemp == NULL) {
	int fd;
	strlcpy(temp, _PATH_TMP_XXX, sizeof(temp));
	fd = mkstemp(temp);
	if(fd < 0){
	    warn("unable to create temporary file %s", temp);
	    return NULL;
	}
	close(fd);
	oldverbose = verbose, verbose = 0;
	oldhash = hash, hash = 0;
	if (doswitch) {
	    pswitch(!proxy);
	}
	for (filemode = "w"; *++argv != NULL; filemode = "a")
	    recvrequest ("NLST", temp, *argv, filemode, 0, 0);
	if (doswitch) {
	    pswitch(!proxy);
	}
	verbose = oldverbose; hash = oldhash;
	ftemp = fopen(temp, "r");
	unlink(temp);
	if (ftemp == NULL) {
	    printf("can't find list of remote files, oops\n");
	    return (NULL);
	}
    }
    while(fgets(buf, sizeof (buf), ftemp)) {
	if ((cp = strchr(buf, '\n')) != NULL)
	    *cp = '\0';
	if(!interactive && suspicious_filename(buf)){
	    printf("Ignoring remote globbed file `%s'\n", buf);
	    continue;
	}
	return buf;
    }
    fclose(ftemp);
    ftemp = NULL;
    return (NULL);
}

char *
onoff(int bool)
{

	return (bool ? "on" : "off");
}

/*
 * Show status.
 */
/*ARGSUSED*/
void
status(int argc, char **argv)
{
	int i;

	if (connected)
		printf("Connected to %s.\n", hostname);
	else
		printf("Not connected.\n");
	if (!proxy) {
		pswitch(1);
		if (connected) {
			printf("Connected for proxy commands to %s.\n", hostname);
		}
		else {
			printf("No proxy connection.\n");
		}
		pswitch(0);
	}
	sec_status();
	printf("Mode: %s; Type: %s; Form: %s; Structure: %s\n",
		modename, typename, formname, structname);
	printf("Verbose: %s; Bell: %s; Prompting: %s; Globbing: %s\n",
		onoff(verbose), onoff(bell), onoff(interactive),
		onoff(doglob));
	printf("Store unique: %s; Receive unique: %s\n", onoff(sunique),
		onoff(runique));
	printf("Case: %s; CR stripping: %s\n",onoff(mcase),onoff(crflag));
	if (ntflag) {
		printf("Ntrans: (in) %s (out) %s\n", ntin,ntout);
	}
	else {
		printf("Ntrans: off\n");
	}
	if (mapflag) {
		printf("Nmap: (in) %s (out) %s\n", mapin, mapout);
	}
	else {
		printf("Nmap: off\n");
	}
	printf("Hash mark printing: %s; Use of PORT cmds: %s\n",
		onoff(hash), onoff(sendport));
	if (macnum > 0) {
		printf("Macros:\n");
		for (i=0; i<macnum; i++) {
			printf("\t%s\n",macros[i].mac_name);
		}
	}
	code = 0;
}

/*
 * Set beep on cmd completed mode.
 */
/*VARARGS*/
void
setbell(int argc, char **argv)
{

	bell = !bell;
	printf("Bell mode %s.\n", onoff(bell));
	code = bell;
}

/*
 * Turn on packet tracing.
 */
/*VARARGS*/
void
settrace(int argc, char **argv)
{

	trace = !trace;
	printf("Packet tracing %s.\n", onoff(trace));
	code = trace;
}

/*
 * Toggle hash mark printing during transfers.
 */
/*VARARGS*/
void
sethash(int argc, char **argv)
{

	hash = !hash;
	printf("Hash mark printing %s", onoff(hash));
	code = hash;
	if (hash)
		printf(" (%d bytes/hash mark)", 1024);
	printf(".\n");
}

/*
 * Turn on printing of server echo's.
 */
/*VARARGS*/
void
setverbose(int argc, char **argv)
{

	verbose = !verbose;
	printf("Verbose mode %s.\n", onoff(verbose));
	code = verbose;
}

/*
 * Toggle PORT cmd use before each data connection.
 */
/*VARARGS*/
void
setport(int argc, char **argv)
{

	sendport = !sendport;
	printf("Use of PORT cmds %s.\n", onoff(sendport));
	code = sendport;
}

/*
 * Turn on interactive prompting
 * during mget, mput, and mdelete.
 */
/*VARARGS*/
void
setprompt(int argc, char **argv)
{

	interactive = !interactive;
	printf("Interactive mode %s.\n", onoff(interactive));
	code = interactive;
}

/*
 * Toggle metacharacter interpretation
 * on local file names.
 */
/*VARARGS*/
void
setglob(int argc, char **argv)
{

	doglob = !doglob;
	printf("Globbing %s.\n", onoff(doglob));
	code = doglob;
}

/*
 * Set debugging mode on/off and/or
 * set level of debugging.
 */
/*VARARGS*/
void
setdebug(int argc, char **argv)
{
	int val;

	if (argc > 1) {
		val = atoi(argv[1]);
		if (val < 0) {
			printf("%s: bad debugging value.\n", argv[1]);
			code = -1;
			return;
		}
	} else
		val = !debug;
	debug = val;
	if (debug)
		options |= SO_DEBUG;
	else
		options &= ~SO_DEBUG;
	printf("Debugging %s (debug=%d).\n", onoff(debug), debug);
	code = debug > 0;
}

/*
 * Set current working directory
 * on remote machine.
 */
void
cd(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "remote-directory")) {
		printf("usage: %s remote-directory\n", argv[0]);
		code = -1;
		return;
	}
	if (command("CWD %s", argv[1]) == ERROR && code == 500) {
		if (verbose)
			printf("CWD command not recognized, trying XCWD\n");
		command("XCWD %s", argv[1]);
	}
}

/*
 * Set current working directory
 * on local machine.
 */
void
lcd(int argc, char **argv)
{
	char buf[MaxPathLen];

	if (argc < 2)
		argc++, argv[1] = home;
	if (argc != 2) {
		printf("usage: %s local-directory\n", argv[0]);
		code = -1;
		return;
	}
	if (!globulize(&argv[1])) {
		code = -1;
		return;
	}
	if (chdir(argv[1]) < 0) {
		warn("local: %s", argv[1]);
		code = -1;
		return;
	}
	if (getcwd(buf, sizeof(buf)) != NULL)
		printf("Local directory now %s\n", buf);
	else
		warnx("getwd: %s", buf);
	code = 0;
}

/*
 * Delete a single file.
 */
void
delete(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "remote-file")) {
		printf("usage: %s remote-file\n", argv[0]);
		code = -1;
		return;
	}
	command("DELE %s", argv[1]);
}

/*
 * Delete multiple files.
 */
void
mdelete(int argc, char **argv)
{
    sighand oldintr;
    int ointer;
    char *cp;

    if (argc < 2 && !another(&argc, &argv, "remote-files")) {
	printf("usage: %s remote-files\n", argv[0]);
	code = -1;
	return;
    }
    mname = argv[0];
    mflag = 1;
    oldintr = signal(SIGINT, mabort);
    setjmp(jabort);
    while ((cp = remglob(argv,0)) != NULL) {
	if (*cp == '\0') {
	    mflag = 0;
	    continue;
	}
	if (mflag && confirm(argv[0], cp)) {
	    command("DELE %s", cp);
	    if (!mflag && fromatty) {
		ointer = interactive;
		interactive = 1;
		if (confirm("Continue with", "mdelete")) {
		    mflag++;
		}
		interactive = ointer;
	    }
	}
    }
    signal(SIGINT, oldintr);
    mflag = 0;
}

/*
 * Rename a remote file.
 */
void
renamefile(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "from-name"))
		goto usage;
	if (argc < 3 && !another(&argc, &argv, "to-name")) {
usage:
		printf("%s from-name to-name\n", argv[0]);
		code = -1;
		return;
	}
	if (command("RNFR %s", argv[1]) == CONTINUE)
		command("RNTO %s", argv[2]);
}

/*
 * Get a directory listing
 * of remote files.
 */
void
ls(int argc, char **argv)
{
	char *cmd;

	if (argc < 2)
		argc++, argv[1] = NULL;
	if (argc < 3)
		argc++, argv[2] = "-";
	if (argc > 3) {
		printf("usage: %s remote-directory local-file\n", argv[0]);
		code = -1;
		return;
	}
	cmd = argv[0][0] == 'n' ? "NLST" : "LIST";
	if (strcmp(argv[2], "-") && !globulize(&argv[2])) {
		code = -1;
		return;
	}
	if (strcmp(argv[2], "-") && *argv[2] != '|')
	    if (!globulize(&argv[2]) || !confirm("output to local-file:",
						 argv[2])) {
		code = -1;
		return;
	    }
	recvrequest(cmd, argv[2], argv[1], "w", 0, 1);
}

/*
 * Get a directory listing
 * of multiple remote files.
 */
void
mls(int argc, char **argv)
{
	sighand oldintr;
	int ointer, i;
	char *cmd, filemode[2], *dest;

	if (argc < 2 && !another(&argc, &argv, "remote-files"))
		goto usage;
	if (argc < 3 && !another(&argc, &argv, "local-file")) {
usage:
		printf("usage: %s remote-files local-file\n", argv[0]);
		code = -1;
		return;
	}
	dest = argv[argc - 1];
	argv[argc - 1] = NULL;
	if (strcmp(dest, "-") && *dest != '|')
		if (!globulize(&dest) ||
		    !confirm("output to local-file:", dest)) {
			code = -1;
			return;
	}
	cmd = argv[0][1] == 'l' ? "NLST" : "LIST";
	mname = argv[0];
	mflag = 1;
	oldintr = signal(SIGINT, mabort);
	setjmp(jabort);
	filemode[1] = '\0';
	for (i = 1; mflag && i < argc-1; ++i) {
		*filemode = (i == 1) ? 'w' : 'a';
		recvrequest(cmd, dest, argv[i], filemode, 0, 1);
		if (!mflag && fromatty) {
			ointer = interactive;
			interactive = 1;
			if (confirm("Continue with", argv[0])) {
				mflag ++;
			}
			interactive = ointer;
		}
	}
	signal(SIGINT, oldintr);
	mflag = 0;
}

/*
 * Do a shell escape
 */
/*ARGSUSED*/
void
shell(int argc, char **argv)
{
	pid_t pid;
	RETSIGTYPE (*old1)(int), (*old2)(int);
	char shellnam[40], *shellpath, *namep;
	int waitstatus;

	old1 = signal (SIGINT, SIG_IGN);
	old2 = signal (SIGQUIT, SIG_IGN);
	if ((pid = fork()) == 0) {
		for (pid = 3; pid < 20; pid++)
			close(pid);
		signal(SIGINT, SIG_DFL);
		signal(SIGQUIT, SIG_DFL);
		shellpath = getenv("SHELL");
		if (shellpath == NULL)
			shellpath = _PATH_BSHELL;
		namep = strrchr(shellpath, '/');
		if (namep == NULL)
			namep = shellpath;
		snprintf (shellnam, sizeof(shellnam),
			  "-%s", ++namep);
		if (strcmp(namep, "sh") != 0)
			shellnam[0] = '+';
		if (debug) {
			printf ("%s\n", shellpath);
			fflush (stdout);
		}
		if (argc > 1) {
			execl(shellpath,shellnam,"-c",altarg,(char *)0);
		}
		else {
			execl(shellpath,shellnam,(char *)0);
		}
		warn("%s", shellpath);
		code = -1;
		exit(1);
	}
	if (pid > 0)
		while (waitpid(-1, &waitstatus, 0) != pid)
			;
	signal(SIGINT, old1);
	signal(SIGQUIT, old2);
	if (pid == -1) {
		warn("%s", "Try again later");
		code = -1;
	}
	else {
		code = 0;
	}
}

/*
 * Send new user information (re-login)
 */
void
user(int argc, char **argv)
{
	char acctstr[80];
	int n, aflag = 0;
	char tmp[256];

	if (argc < 2)
		another(&argc, &argv, "username");
	if (argc < 2 || argc > 4) {
		printf("usage: %s username [password] [account]\n", argv[0]);
		code = -1;
		return;
	}
	n = command("USER %s", argv[1]);
	if (n == CONTINUE) {
	    if (argc < 3 ) {
		UI_UTIL_read_pw_string (tmp,
				    sizeof(tmp),
				    "Password: ", 0);
		argv[2] = tmp;
		argc++;
	    }
	    n = command("PASS %s", argv[2]);
	}
	if (n == CONTINUE) {
		if (argc < 4) {
			printf("Account: "); fflush(stdout);
			fgets(acctstr, sizeof(acctstr) - 1, stdin);
			acctstr[strcspn(acctstr, "\r\n")] = '\0';
			argv[3] = acctstr; argc++;
		}
		n = command("ACCT %s", argv[3]);
		aflag++;
	}
	if (n != COMPLETE) {
		fprintf(stdout, "Login failed.\n");
		return;
	}
	if (!aflag && argc == 4) {
		command("ACCT %s", argv[3]);
	}
}

/*
 * Print working directory.
 */
/*VARARGS*/
void
pwd(int argc, char **argv)
{
	int oldverbose = verbose;

	/*
	 * If we aren't verbose, this doesn't do anything!
	 */
	verbose = 1;
	if (command("PWD") == ERROR && code == 500) {
		printf("PWD command not recognized, trying XPWD\n");
		command("XPWD");
	}
	verbose = oldverbose;
}

/*
 * Make a directory.
 */
void
makedir(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "directory-name")) {
		printf("usage: %s directory-name\n", argv[0]);
		code = -1;
		return;
	}
	if (command("MKD %s", argv[1]) == ERROR && code == 500) {
		if (verbose)
			printf("MKD command not recognized, trying XMKD\n");
		command("XMKD %s", argv[1]);
	}
}

/*
 * Remove a directory.
 */
void
removedir(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "directory-name")) {
		printf("usage: %s directory-name\n", argv[0]);
		code = -1;
		return;
	}
	if (command("RMD %s", argv[1]) == ERROR && code == 500) {
		if (verbose)
			printf("RMD command not recognized, trying XRMD\n");
		command("XRMD %s", argv[1]);
	}
}

/*
 * Send a line, verbatim, to the remote machine.
 */
void
quote(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "command line to send")) {
		printf("usage: %s line-to-send\n", argv[0]);
		code = -1;
		return;
	}
	quote1("", argc, argv);
}

/*
 * Send a SITE command to the remote machine.  The line
 * is sent verbatim to the remote machine, except that the
 * word "SITE" is added at the front.
 */
void
site(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "arguments to SITE command")) {
		printf("usage: %s line-to-send\n", argv[0]);
		code = -1;
		return;
	}
	quote1("SITE ", argc, argv);
}

/*
 * Turn argv[1..argc) into a space-separated string, then prepend initial text.
 * Send the result as a one-line command and get response.
 */
void
quote1(char *initial, int argc, char **argv)
{
    int i;
    char buf[BUFSIZ];		/* must be >= sizeof(line) */

    strlcpy(buf, initial, sizeof(buf));
    for(i = 1; i < argc; i++) {
	if(i > 1)
	    strlcat(buf, " ", sizeof(buf));
	strlcat(buf, argv[i], sizeof(buf));
    }
    if (command("%s", buf) == PRELIM) {
	while (getreply(0) == PRELIM)
	    continue;
    }
}

void
do_chmod(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "mode"))
		goto usage;
	if (argc < 3 && !another(&argc, &argv, "file-name")) {
usage:
		printf("usage: %s mode file-name\n", argv[0]);
		code = -1;
		return;
	}
	command("SITE CHMOD %s %s", argv[1], argv[2]);
}

void
do_umask(int argc, char **argv)
{
	int oldverbose = verbose;

	verbose = 1;
	command(argc == 1 ? "SITE UMASK" : "SITE UMASK %s", argv[1]);
	verbose = oldverbose;
}

void
ftp_idle(int argc, char **argv)
{
	int oldverbose = verbose;

	verbose = 1;
	command(argc == 1 ? "SITE IDLE" : "SITE IDLE %s", argv[1]);
	verbose = oldverbose;
}

/*
 * Ask the other side for help.
 */
void
rmthelp(int argc, char **argv)
{
	int oldverbose = verbose;

	verbose = 1;
	command(argc == 1 ? "HELP" : "HELP %s", argv[1]);
	verbose = oldverbose;
}

/*
 * Terminate session and exit.
 */
/*VARARGS*/
void
quit(int argc, char **argv)
{

	if (connected)
		disconnect(0, 0);
	pswitch(1);
	if (connected) {
		disconnect(0, 0);
	}
	exit(0);
}

/*
 * Terminate session, but don't exit.
 */
void
disconnect(int argc, char **argv)
{

	if (!connected)
		return;
	command("QUIT");
	if (cout) {
		fclose(cout);
	}
	cout = NULL;
	connected = 0;
	sec_end();
	data = -1;
	if (!proxy) {
		macnum = 0;
	}
}

int
confirm(char *cmd, char *file)
{
	char buf[BUFSIZ];

	if (!interactive)
		return (1);
	printf("%s %s? ", cmd, file);
	fflush(stdout);
	if (fgets(buf, sizeof buf, stdin) == NULL)
		return (0);
	return (*buf == 'y' || *buf == 'Y');
}

void
fatal(char *msg)
{

	errx(1, "%s", msg);
}

/*
 * Glob a local file name specification with
 * the expectation of a single return value.
 * Can't control multiple values being expanded
 * from the expression, we return only the first.
 */
int
globulize(char **cpp)
{
	glob_t gl;
	int flags;

	if (!doglob)
		return (1);

	flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_QUOTE|GLOB_TILDE;
	memset(&gl, 0, sizeof(gl));
	if (glob(*cpp, flags, NULL, &gl) ||
	    gl.gl_pathc == 0) {
		warnx("%s: not found", *cpp);
		globfree(&gl);
		return (0);
	}
	*cpp = strdup(gl.gl_pathv[0]);	/* XXX - wasted memory */
	globfree(&gl);
	return (1);
}

void
account(int argc, char **argv)
{
	char acctstr[50];

	if (argc > 1) {
		++argv;
		--argc;
		strlcpy (acctstr, *argv, sizeof(acctstr));
		while (argc > 1) {
			--argc;
			++argv;
			strlcat(acctstr, *argv, sizeof(acctstr));
		}
	}
	else {
	    UI_UTIL_read_pw_string(acctstr, sizeof(acctstr), "Account:", 0);
	}
	command("ACCT %s", acctstr);
}

jmp_buf abortprox;

static RETSIGTYPE
proxabort(int sig)
{

	if (!proxy) {
		pswitch(1);
	}
	if (connected) {
		proxflag = 1;
	}
	else {
		proxflag = 0;
	}
	pswitch(0);
	longjmp(abortprox,1);
}

void
doproxy(int argc, char **argv)
{
	struct cmd *c;
	RETSIGTYPE (*oldintr)(int);

	if (argc < 2 && !another(&argc, &argv, "command")) {
		printf("usage: %s command\n", argv[0]);
		code = -1;
		return;
	}
	c = getcmd(argv[1]);
	if (c == (struct cmd *) -1) {
		printf("?Ambiguous command\n");
		fflush(stdout);
		code = -1;
		return;
	}
	if (c == 0) {
		printf("?Invalid command\n");
		fflush(stdout);
		code = -1;
		return;
	}
	if (!c->c_proxy) {
		printf("?Invalid proxy command\n");
		fflush(stdout);
		code = -1;
		return;
	}
	if (setjmp(abortprox)) {
		code = -1;
		return;
	}
	oldintr = signal(SIGINT, proxabort);
	pswitch(1);
	if (c->c_conn && !connected) {
		printf("Not connected\n");
		fflush(stdout);
		pswitch(0);
		signal(SIGINT, oldintr);
		code = -1;
		return;
	}
	(*c->c_handler)(argc-1, argv+1);
	if (connected) {
		proxflag = 1;
	}
	else {
		proxflag = 0;
	}
	pswitch(0);
	signal(SIGINT, oldintr);
}

void
setcase(int argc, char **argv)
{

	mcase = !mcase;
	printf("Case mapping %s.\n", onoff(mcase));
	code = mcase;
}

void
setcr(int argc, char **argv)
{

	crflag = !crflag;
	printf("Carriage Return stripping %s.\n", onoff(crflag));
	code = crflag;
}

void
setntrans(int argc, char **argv)
{
	if (argc == 1) {
		ntflag = 0;
		printf("Ntrans off.\n");
		code = ntflag;
		return;
	}
	ntflag++;
	code = ntflag;
	strlcpy (ntin, argv[1], 17);
	if (argc == 2) {
		ntout[0] = '\0';
		return;
	}
	strlcpy (ntout, argv[2], 17);
}

char *
dotrans(char *name)
{
	static char new[MaxPathLen];
	char *cp1, *cp2 = new;
	int i, ostop, found;

	for (ostop = 0; *(ntout + ostop) && ostop < 16; ostop++)
		continue;
	for (cp1 = name; *cp1; cp1++) {
		found = 0;
		for (i = 0; *(ntin + i) && i < 16; i++) {
			if (*cp1 == *(ntin + i)) {
				found++;
				if (i < ostop) {
					*cp2++ = *(ntout + i);
				}
				break;
			}
		}
		if (!found) {
			*cp2++ = *cp1;
		}
	}
	*cp2 = '\0';
	return (new);
}

void
setnmap(int argc, char **argv)
{
	char *cp;

	if (argc == 1) {
		mapflag = 0;
		printf("Nmap off.\n");
		code = mapflag;
		return;
	}
	if (argc < 3 && !another(&argc, &argv, "mapout")) {
		printf("Usage: %s [mapin mapout]\n",argv[0]);
		code = -1;
		return;
	}
	mapflag = 1;
	code = 1;
	cp = strchr(altarg, ' ');
	if (proxy) {
		while(*++cp == ' ')
			continue;
		altarg = cp;
		cp = strchr(altarg, ' ');
	}
	*cp = '\0';
	strlcpy(mapin, altarg, MaxPathLen);
	while (*++cp == ' ')
		continue;
	strlcpy(mapout, cp, MaxPathLen);
}

char *
domap(char *name)
{
	static char new[MaxPathLen];
	char *cp1 = name, *cp2 = mapin;
	char *tp[9], *te[9];
	int i, toks[9], toknum = 0, match = 1;

	for (i=0; i < 9; ++i) {
		toks[i] = 0;
	}
	while (match && *cp1 && *cp2) {
		switch (*cp2) {
			case '\\':
				if (*++cp2 != *cp1) {
					match = 0;
				}
				break;
			case '$':
				if (*(cp2+1) >= '1' && (*cp2+1) <= '9') {
					if (*cp1 != *(++cp2+1)) {
						toks[toknum = *cp2 - '1']++;
						tp[toknum] = cp1;
						while (*++cp1 && *(cp2+1)
							!= *cp1);
						te[toknum] = cp1;
					}
					cp2++;
					break;
				}
				/* FALLTHROUGH */
			default:
				if (*cp2 != *cp1) {
					match = 0;
				}
				break;
		}
		if (match && *cp1) {
			cp1++;
		}
		if (match && *cp2) {
			cp2++;
		}
	}
	if (!match && *cp1) /* last token mismatch */
	{
		toks[toknum] = 0;
	}
	cp1 = new;
	*cp1 = '\0';
	cp2 = mapout;
	while (*cp2) {
		match = 0;
		switch (*cp2) {
			case '\\':
				if (*(cp2 + 1)) {
					*cp1++ = *++cp2;
				}
				break;
			case '[':
LOOP:
				if (*++cp2 == '$' && isdigit((unsigned char)*(cp2+1))) {
					if (*++cp2 == '0') {
						char *cp3 = name;

						while (*cp3) {
							*cp1++ = *cp3++;
						}
						match = 1;
					}
					else if (toks[toknum = *cp2 - '1']) {
						char *cp3 = tp[toknum];

						while (cp3 != te[toknum]) {
							*cp1++ = *cp3++;
						}
						match = 1;
					}
				}
				else {
					while (*cp2 && *cp2 != ',' &&
					    *cp2 != ']') {
						if (*cp2 == '\\') {
							cp2++;
						}
						else if (*cp2 == '$' &&
   						        isdigit((unsigned char)*(cp2+1))) {
							if (*++cp2 == '0') {
							   char *cp3 = name;

							   while (*cp3) {
								*cp1++ = *cp3++;
							   }
							}
							else if (toks[toknum =
							    *cp2 - '1']) {
							   char *cp3=tp[toknum];

							   while (cp3 !=
								  te[toknum]) {
								*cp1++ = *cp3++;
							   }
							}
						}
						else if (*cp2) {
							*cp1++ = *cp2++;
						}
					}
					if (!*cp2) {
						printf("nmap: unbalanced brackets\n");
						return (name);
					}
					match = 1;
					cp2--;
				}
				if (match) {
					while (*++cp2 && *cp2 != ']') {
					      if (*cp2 == '\\' && *(cp2 + 1)) {
							cp2++;
					      }
					}
					if (!*cp2) {
						printf("nmap: unbalanced brackets\n");
						return (name);
					}
					break;
				}
				switch (*++cp2) {
					case ',':
						goto LOOP;
					case ']':
						break;
					default:
						cp2--;
						goto LOOP;
				}
				break;
			case '$':
				if (isdigit((unsigned char)*(cp2 + 1))) {
					if (*++cp2 == '0') {
						char *cp3 = name;

						while (*cp3) {
							*cp1++ = *cp3++;
						}
					}
					else if (toks[toknum = *cp2 - '1']) {
						char *cp3 = tp[toknum];

						while (cp3 != te[toknum]) {
							*cp1++ = *cp3++;
						}
					}
					break;
				}
				/* intentional drop through */
			default:
				*cp1++ = *cp2;
				break;
		}
		cp2++;
	}
	*cp1 = '\0';
	if (!*new) {
		return (name);
	}
	return (new);
}

void
setpassive(int argc, char **argv)
{

	passivemode = !passivemode;
	printf("Passive mode %s.\n", onoff(passivemode));
	code = passivemode;
}

void
setsunique(int argc, char **argv)
{

	sunique = !sunique;
	printf("Store unique %s.\n", onoff(sunique));
	code = sunique;
}

void
setrunique(int argc, char **argv)
{

	runique = !runique;
	printf("Receive unique %s.\n", onoff(runique));
	code = runique;
}

/* change directory to perent directory */
void
cdup(int argc, char **argv)
{

	if (command("CDUP") == ERROR && code == 500) {
		if (verbose)
			printf("CDUP command not recognized, trying XCUP\n");
		command("XCUP");
	}
}

/* restart transfer at specific point */
void
restart(int argc, char **argv)
{

    if (argc != 2)
	printf("restart: offset not specified\n");
    else {
	restart_point = atol(argv[1]);
	printf("restarting at %ld. %s\n", (long)restart_point,
	       "execute get, put or append to initiate transfer");
    }
}

/* show remote system type */
void
syst(int argc, char **argv)
{

	command("SYST");
}

void
macdef(int argc, char **argv)
{
	char *tmp;
	int c;

	if (macnum == 16) {
		printf("Limit of 16 macros have already been defined\n");
		code = -1;
		return;
	}
	if (argc < 2 && !another(&argc, &argv, "macro name")) {
		printf("Usage: %s macro_name\n",argv[0]);
		code = -1;
		return;
	}
	if (interactive) {
		printf("Enter macro line by line, terminating it with a null line\n");
	}
	strlcpy(macros[macnum].mac_name,
			argv[1],
			sizeof(macros[macnum].mac_name));
	if (macnum == 0) {
		macros[macnum].mac_start = macbuf;
	}
	else {
		macros[macnum].mac_start = macros[macnum - 1].mac_end + 1;
	}
	tmp = macros[macnum].mac_start;
	while (tmp != macbuf+4096) {
		if ((c = getchar()) == EOF) {
			printf("macdef:end of file encountered\n");
			code = -1;
			return;
		}
		if ((*tmp = c) == '\n') {
			if (tmp == macros[macnum].mac_start) {
				macros[macnum++].mac_end = tmp;
				code = 0;
				return;
			}
			if (*(tmp-1) == '\0') {
				macros[macnum++].mac_end = tmp - 1;
				code = 0;
				return;
			}
			*tmp = '\0';
		}
		tmp++;
	}
	while (1) {
		while ((c = getchar()) != '\n' && c != EOF)
			/* LOOP */;
		if (c == EOF || getchar() == '\n') {
			printf("Macro not defined - 4k buffer exceeded\n");
			code = -1;
			return;
		}
	}
}

/*
 * get size of file on remote machine
 */
void
sizecmd(int argc, char **argv)
{

	if (argc < 2 && !another(&argc, &argv, "filename")) {
		printf("usage: %s filename\n", argv[0]);
		code = -1;
		return;
	}
	command("SIZE %s", argv[1]);
}

/*
 * get last modification time of file on remote machine
 */
void
modtime(int argc, char **argv)
{
	int overbose;

	if (argc < 2 && !another(&argc, &argv, "filename")) {
		printf("usage: %s filename\n", argv[0]);
		code = -1;
		return;
	}
	overbose = verbose;
	if (debug == 0)
		verbose = -1;
	if (command("MDTM %s", argv[1]) == COMPLETE) {
		int yy, mo, day, hour, min, sec;
		sscanf(reply_string, "%*s %04d%02d%02d%02d%02d%02d", &yy, &mo,
			&day, &hour, &min, &sec);
		/* might want to print this in local time */
		printf("%s\t%02d/%02d/%04d %02d:%02d:%02d GMT\n", argv[1],
			mo, day, yy, hour, min, sec);
	} else
		printf("%s\n", reply_string);
	verbose = overbose;
}

/*
 * show status on reomte machine
 */
void
rmtstatus(int argc, char **argv)
{

	command(argc > 1 ? "STAT %s" : "STAT" , argv[1]);
}

/*
 * get file if modtime is more recent than current file
 */
void
newer(int argc, char **argv)
{

	if (getit(argc, argv, -1, curtype == TYPE_I ? "wb" : "w"))
		printf("Local file \"%s\" is newer than remote file \"%s\"\n",
			argv[2], argv[1]);
}

void
klist(int argc, char **argv)
{
    int ret;
    if(argc != 1){
	printf("usage: %s\n", argv[0]);
	code = -1;
	return;
    }

    ret = command("SITE KLIST");
    code = (ret == COMPLETE);
}