cmds.c

UNIX FTP client

 * Send the result as a one-line command and get response.
 */
static void
quote1(const char *initial, int argc, char **argv)
{
	register int i, len;
	char buf[BUFSIZ];		/* must be >= sizeof(line) */

	(void) strcpy(buf, initial);
	if (argc > 1) {
		len = strlen(buf);
		len += strlen(strcpy(&buf[len], argv[1]));
		for (i = 2; i < argc; i++) {
			buf[len++] = ' ';
			len += strlen(strcpy(&buf[len], argv[i]));
		}
	}
	if (command(buf) == PRELIM) {
		while (getreply(0) == PRELIM);
	}
}

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;
	}
	(void) command("SITE CHMOD %s %s", argv[1], argv[2]);
}

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

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

void
idle_cmd(argc, argv)
	int argc;
	char *argv[];
{
	int oldverbose = verbose;

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

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

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

/*
 * Terminate session and exit.
 */
void
quit(void)
{

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

/*
 * Terminate session, but don't exit.
 */
void
disconnect(void)
{
	if (!connected)
		return;
	(void) command("QUIT");
	if (cout) {
		(void) fclose(cout);
	}
	cout = NULL;
	connected = 0;
	data = -1;
	if (!proxy) {
		macnum = 0;
	}
}

static int
confirm(const char *cmd, const char *file)
{
	char lyne[BUFSIZ];

	if (!interactive)
		return (1);

#ifdef __USE_READLINE__
	if (fromatty) {
		char *lineread;
		snprintf(lyne, BUFSIZ, "%s %s? ", cmd, file);
		lineread = readline(lyne);
		if (!lineread) return 0;
		strcpy(lyne, lineread);
		free(lineread);
	}
	else {
#endif
		printf("%s %s? ", cmd, file);
		fflush(stdout);
		if (fgets(lyne, sizeof(lyne), stdin) == NULL) {
		    return 0;
		}
#ifdef __USE_READLINE__
	}
#endif
	return (*lyne != 'n' && *lyne != 'N');
}

void
fatal(const char *msg)
{

	fprintf(stderr, "ftp: %s\n", msg);
	exit(1);
}

/*
 * 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.
 */
static 
char *
globulize(char *cpp)
{
	char **globbed;
	char *rv = cpp;

	if (!doglob) return cpp;

	globbed = ftpglob(cpp);
	if (globerr != NULL) {
		printf("%s: %s\n", cpp, globerr);
		if (globbed) {
			blkfree(globbed);
			free(globbed);
		}
		return NULL;
	}
	if (globbed) {
		rv = globbed[0];
		/* don't waste too much memory */
		if (globbed[0]) {
			blkfree(globbed+1);
		}
		free(globbed);
	}
	return rv;
}

void
account(int argc, char *argv[])
{
	char buf[128], *ap;

	if (argc > 1) {
		*buf = 0;
		while (argc > 1) {
			--argc;
			++argv;
			strncat(buf, *argv, sizeof(buf)-strlen(buf));
			buf[sizeof(buf)-1] = 0;
		}
		ap = buf;
	}
	else {
		ap = getpass("Account:");
	}
	command("ACCT %s", ap);
}

static 
void
proxabort(int ignore)
{
	(void)ignore;

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

void
doproxy(int argc, char *argv[])
{
	register struct cmd *c;
	void (*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");
		(void) fflush(stdout);
		code = -1;
		return;
	}
	if (c == 0) {
		printf("?Invalid command\n");
		(void) fflush(stdout);
		code = -1;
		return;
	}
	if (!c->c_proxy) {
		printf("?Invalid proxy command\n");
		(void) fflush(stdout);
		code = -1;
		return;
	}
	if (sigsetjmp(abortprox, 1)) {
		code = -1;
		return;
	}
	oldintr = signal(SIGINT, proxabort);
	pswitch(1);
	if (c->c_conn && !connected) {
		printf("Not connected\n");
		(void) fflush(stdout);
		pswitch(0);
		(void) signal(SIGINT, oldintr);
		code = -1;
		return;
	}

	if (c->c_handler_v) c->c_handler_v(argc-1, argv+1);
	else if (c->c_handler_0) c->c_handler_0();
	else c->c_handler_1(NULL);  /* should not reach this */

	if (connected) {
		proxflag = 1;
	}
	else {
		proxflag = 0;
	}
	pswitch(0);
	(void) signal(SIGINT, oldintr);
}

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

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

void
setntrans(argc,argv)
	int argc;
	char *argv[];
{
	if (argc == 1) {
		ntflag = 0;
		printf("Ntrans off.\n");
		code = ntflag;
		return;
	}
	ntflag++;
	code = ntflag;
	(void) strncpy(ntin, argv[1], 16);
	ntin[16] = '\0';
	if (argc == 2) {
		ntout[0] = '\0';
		return;
	}
	(void) strncpy(ntout, argv[2], 16);
	ntout[16] = '\0';
}

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

	for (ostop = 0; *(ntout + ostop) && ostop < 16; ostop++);
	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(argc, argv)
	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 = index(altarg, ' ');
	if (proxy) {
		while(*++cp == ' ');
		altarg = cp;
		cp = index(altarg, ' ');
	}
	*cp = '\0';
	(void) strncpy(mapin, altarg, MAXPATHLEN - 1);
	while (*++cp == ' ');
	(void) strncpy(mapout, cp, MAXPATHLEN - 1);
}

static
char *
domap(char *name)
{
	static char new[MAXPATHLEN];
	register 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(*(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(*(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(*(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
setsunique(void)
{
	sunique = !sunique;
	printf("Store unique %s.\n", onoff(sunique));
	code = sunique;
}

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

/* change directory to parent directory */
void
cdup(void)
{
	if (command("CDUP") == ERROR && code == 500) {
		if (verbose)
			printf("CDUP command not recognized, trying XCUP\n");
		(void) 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", restart_point,
		    "execute get, put or append to initiate transfer");
	}
}

/* show remote system type */
void
syst(void)
{
	command("SYST");
}

void
macdef(argc, argv)
	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");
	}
	(void) strncpy(macros[macnum].mac_name, argv[1], 8);
	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;
		}
	}
}

/*
 * Start up passive mode interaction
 */
void
setpassive(void)
{
        passivemode = !passivemode;
        printf("Passive mode %s.\n", onoff(passivemode));
        code = passivemode;
}

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

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

/*
 * get last modification time of file on remote machine
 */
void
modtime(argc, argv)
	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 remote machine
 */
void
rmtstatus(argc, argv)
	int argc;
	char *argv[];
{
	(void) 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, "w")) {
		/* This should be controlled by some verbose flag */
		printf("Local file \"%s\" is newer than remote file \"%s\"\n",
			argv[2], argv[1]);
	}
}