712 lines
14 KiB
C
712 lines
14 KiB
C
/* $NetBSD: main.c,v 1.26 1997/10/14 16:31:22 christos Exp $ */
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/*
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* Copyright (c) 1985, 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1985, 1989, 1993, 1994\
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\tThe Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 10/9/94";
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#else
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__RCSID("$FreeBSD$");
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__RCSID_SOURCE("$NetBSD: main.c,v 1.26 1997/10/14 16:31:22 christos Exp $");
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#endif
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#endif /* not lint */
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/*
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* FTP User Program -- Command Interface.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <errno.h>
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#include <locale.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "ftp_var.h"
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#include "pathnames.h"
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int family = AF_UNSPEC;
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int main __P((int, char **));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch, top, rval;
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struct passwd *pw = NULL;
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char *cp, homedir[MAXPATHLEN], *s;
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int dumbterm;
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char *src_addr = NULL;
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(void) setlocale(LC_ALL, "");
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ftpport = "ftp";
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httpport = "http";
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gateport = NULL;
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cp = getenv("FTPSERVERPORT");
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if (cp != NULL)
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asprintf(&gateport, "%s", cp);
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if (!gateport)
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asprintf(&gateport, "ftpgate");
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doglob = 1;
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interactive = 1;
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autologin = 1;
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passivemode = 0;
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restricted_data_ports = 1;
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preserve = 1;
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verbose = 0;
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progress = 0;
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gatemode = 0;
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#ifndef SMALL
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editing = 0;
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el = NULL;
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hist = NULL;
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#endif
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mark = HASHBYTES;
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marg_sl = sl_init();
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if ((tmpdir = getenv("TMPDIR")) == NULL)
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tmpdir = _PATH_TMP;
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cp = strrchr(argv[0], '/');
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cp = (cp == NULL) ? argv[0] : cp + 1;
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if ((s = getenv("FTP_PASSIVE_MODE")) != NULL
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&& strcasecmp(s, "no") != 0)
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passivemode = 1;
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if (strcmp(cp, "pftp") == 0)
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passivemode = 1;
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else if (strcmp(cp, "gate-ftp") == 0)
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gatemode = 1;
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gateserver = getenv("FTPSERVER");
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if (gateserver == NULL || *gateserver == '\0')
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gateserver = GATE_SERVER;
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if (gatemode) {
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if (*gateserver == '\0') {
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warnx(
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"Neither $FTPSERVER nor GATE_SERVER is defined; disabling gate-ftp");
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gatemode = 0;
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}
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}
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cp = getenv("TERM");
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if (cp == NULL || strcmp(cp, "dumb") == 0)
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dumbterm = 1;
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else
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dumbterm = 0;
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fromatty = isatty(fileno(stdin));
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if (fromatty) {
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verbose = 1; /* verbose if from a tty */
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#ifndef SMALL
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if (! dumbterm)
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editing = 1; /* editing mode on if tty is usable */
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#endif
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}
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if (isatty(fileno(stdout)) && !dumbterm)
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progress = 1; /* progress bar on if tty is usable */
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while ((ch = getopt(argc, argv, "46adeginpP:s:tUvV")) != -1) {
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switch (ch) {
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case '4':
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family = AF_INET;
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break;
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#ifdef INET6
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case '6':
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family = AF_INET6;
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break;
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#endif
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case 'a':
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anonftp = 1;
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break;
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case 'd':
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options |= SO_DEBUG;
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debug++;
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break;
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case 'e':
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#ifndef SMALL
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editing = 0;
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#endif
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break;
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case 'g':
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doglob = 0;
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break;
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case 'i':
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interactive = 0;
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break;
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case 'n':
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autologin = 0;
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break;
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case 'p':
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passivemode = 1;
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break;
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case 'P':
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ftpport = optarg;
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break;
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case 's':
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dobind = 1;
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src_addr = optarg;
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break;
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case 't':
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trace = 1;
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break;
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case 'U':
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restricted_data_ports = 0;
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break;
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case 'v':
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verbose = 1;
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break;
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case 'V':
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verbose = 0;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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cpend = 0; /* no pending replies */
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proxy = 0; /* proxy not active */
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crflag = 1; /* strip c.r. on ascii gets */
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sendport = -1; /* not using ports */
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if (dobind) {
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struct addrinfo hints;
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struct addrinfo *res;
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int error;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = family;
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hints.ai_socktype = SOCK_STREAM;
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error = getaddrinfo(src_addr, NULL, &hints, &res);
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if (error) {
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warnx("%s: %s", src_addr, gai_strerror(error));
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if (error == EAI_SYSTEM)
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warnx("%s", strerror(errno));
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exit(1);
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}
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bindres0 = res;
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}
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/*
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* Set up the home directory in case we're globbing.
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*/
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cp = getlogin();
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if (cp != NULL) {
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pw = getpwnam(cp);
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}
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if (pw == NULL)
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pw = getpwuid(getuid());
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if (pw != NULL) {
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home = homedir;
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(void)strcpy(home, pw->pw_dir);
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}
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setttywidth(0);
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(void)signal(SIGWINCH, setttywidth);
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#ifdef __GNUC__ /* XXX: to shut up gcc warnings */
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(void)&argc;
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(void)&argv;
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#endif
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if (argc > 0) {
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if (strchr(argv[0], ':') != NULL && ! isipv6addr(argv[0])) {
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anonftp = 1; /* Handle "automatic" transfers. */
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rval = auto_fetch(argc, argv);
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if (rval >= 0) /* -1 == connected and cd-ed */
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exit(rval);
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} else {
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char *xargv[4], **xargp = xargv;
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#ifdef __GNUC__ /* XXX: to shut up gcc warnings */
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(void)&xargp;
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#endif
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if (setjmp(toplevel))
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exit(0);
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(void)signal(SIGINT, (sig_t)intr);
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(void)signal(SIGPIPE, (sig_t)lostpeer);
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*xargp++ = __progname;
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*xargp++ = argv[0]; /* host */
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if (argc > 1)
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*xargp++ = argv[1]; /* port */
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*xargp = NULL;
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setpeer(xargp-xargv, xargv);
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}
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}
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#ifndef SMALL
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controlediting();
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#endif /* !SMALL */
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top = setjmp(toplevel) == 0;
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if (top) {
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(void)signal(SIGINT, (sig_t)intr);
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(void)signal(SIGPIPE, (sig_t)lostpeer);
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}
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for (;;) {
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cmdscanner(top);
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top = 1;
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}
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}
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void
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intr()
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{
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alarmtimer(0);
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longjmp(toplevel, 1);
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}
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void
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lostpeer()
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{
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alarmtimer(0);
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if (connected) {
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if (cout != NULL) {
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(void)shutdown(fileno(cout), 1+1);
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(void)fclose(cout);
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cout = NULL;
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}
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if (data >= 0) {
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(void)shutdown(data, 1+1);
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(void)close(data);
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data = -1;
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}
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connected = 0;
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}
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pswitch(1);
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if (connected) {
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if (cout != NULL) {
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(void)shutdown(fileno(cout), 1+1);
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(void)fclose(cout);
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cout = NULL;
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}
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connected = 0;
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}
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proxflag = 0;
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pswitch(0);
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}
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/*
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* Generate a prompt
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*/
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char *
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prompt()
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{
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return ("ftp> ");
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}
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/*
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* Command parser.
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*/
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void
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cmdscanner(top)
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int top;
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{
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struct cmd *c;
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int num;
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if (!top
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#ifndef SMALL
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&& !editing
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#endif /* !SMALL */
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)
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(void)putchar('\n');
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for (;;) {
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#ifndef SMALL
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if (!editing) {
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#endif /* !SMALL */
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if (fromatty)
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fputs(prompt(), stdout);
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(void)fflush(stdout);
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if (fgets(line, sizeof(line), stdin) == NULL)
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quit(0, 0);
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num = strlen(line);
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if (num == 0)
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break;
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if (line[--num] == '\n') {
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if (num == 0)
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break;
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line[num] = '\0';
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} else if (num == sizeof(line) - 2) {
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puts("sorry, input line too long.");
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while ((num = getchar()) != '\n' && num != EOF)
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/* void */;
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break;
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} /* else it was a line without a newline */
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#ifndef SMALL
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} else {
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const char *buf;
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cursor_pos = NULL;
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if ((buf = el_gets(el, &num)) == NULL || num == 0)
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quit(0, 0);
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if (buf[--num] == '\n') {
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if (num == 0)
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break;
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} else if (num >= sizeof(line)) {
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puts("sorry, input line too long.");
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break;
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}
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memcpy(line, buf, num);
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line[num] = '\0';
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history(hist, H_ENTER, buf);
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}
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#endif /* !SMALL */
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makeargv();
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if (margc == 0)
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continue;
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#if 0 && !defined(SMALL) /* XXX: don't want el_parse */
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/*
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* el_parse returns -1 to signal that it's not been handled
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* internally.
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*/
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if (el_parse(el, margc, margv) != -1)
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continue;
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#endif /* !SMALL */
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c = getcmd(margv[0]);
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if (c == (struct cmd *)-1) {
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puts("?Ambiguous command.");
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continue;
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}
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if (c == 0) {
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puts("?Invalid command.");
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continue;
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}
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if (c->c_conn && !connected) {
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puts("Not connected.");
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continue;
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}
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confirmrest = 0;
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(*c->c_handler)(margc, margv);
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if (bell && c->c_bell)
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(void)putchar('\007');
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if (c->c_handler != help)
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break;
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}
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(void)signal(SIGINT, (sig_t)intr);
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(void)signal(SIGPIPE, (sig_t)lostpeer);
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}
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struct cmd *
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getcmd(name)
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const char *name;
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{
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const char *p, *q;
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struct cmd *c, *found;
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int nmatches, longest;
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if (name == NULL)
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return (0);
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longest = 0;
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nmatches = 0;
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found = 0;
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for (c = cmdtab; (p = c->c_name) != NULL; c++) {
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for (q = name; *q == *p++; q++)
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if (*q == 0) /* exact match? */
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return (c);
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if (!*q) { /* the name was a prefix */
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if (q - name > longest) {
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longest = q - name;
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nmatches = 1;
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found = c;
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} else if (q - name == longest)
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nmatches++;
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}
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}
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if (nmatches > 1)
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return ((struct cmd *)-1);
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return (found);
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}
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/*
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* Slice a string up into argc/argv.
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*/
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int slrflag;
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void
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makeargv()
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{
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char *argp;
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stringbase = line; /* scan from first of buffer */
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argbase = argbuf; /* store from first of buffer */
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slrflag = 0;
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marg_sl->sl_cur = 0; /* reset to start of marg_sl */
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for (margc = 0; ; margc++) {
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argp = slurpstring();
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sl_add(marg_sl, argp);
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if (argp == NULL)
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break;
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}
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#ifndef SMALL
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if (cursor_pos == line) {
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cursor_argc = 0;
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cursor_argo = 0;
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} else if (cursor_pos != NULL) {
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cursor_argc = margc;
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cursor_argo = strlen(margv[margc-1]);
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}
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#endif /* !SMALL */
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}
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#ifdef SMALL
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#define INC_CHKCURSOR(x) (x)++
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#else /* !SMALL */
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#define INC_CHKCURSOR(x) { (x)++ ; \
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if (x == cursor_pos) { \
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cursor_argc = margc; \
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cursor_argo = ap-argbase; \
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cursor_pos = NULL; \
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} }
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#endif /* !SMALL */
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/*
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* Parse string into argbuf;
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* implemented with FSM to
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* handle quoting and strings
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*/
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char *
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slurpstring()
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{
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int got_one = 0;
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char *sb = stringbase;
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char *ap = argbase;
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char *tmp = argbase; /* will return this if token found */
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if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */
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switch (slrflag) { /* and $ as token for macro invoke */
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case 0:
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slrflag++;
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INC_CHKCURSOR(stringbase);
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return ((*sb == '!') ? "!" : "$");
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/* NOTREACHED */
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case 1:
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slrflag++;
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altarg = stringbase;
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break;
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default:
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break;
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}
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}
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S0:
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switch (*sb) {
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case '\0':
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goto OUT;
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case ' ':
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case '\t':
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INC_CHKCURSOR(sb);
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goto S0;
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default:
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switch (slrflag) {
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case 0:
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slrflag++;
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break;
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case 1:
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slrflag++;
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altarg = sb;
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break;
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default:
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break;
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}
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goto S1;
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}
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S1:
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switch (*sb) {
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case ' ':
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case '\t':
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case '\0':
|
|
goto OUT; /* end of token */
|
|
|
|
case '\\':
|
|
INC_CHKCURSOR(sb);
|
|
goto S2; /* slurp next character */
|
|
|
|
case '"':
|
|
INC_CHKCURSOR(sb);
|
|
goto S3; /* slurp quoted string */
|
|
|
|
default:
|
|
*ap = *sb; /* add character to token */
|
|
ap++;
|
|
INC_CHKCURSOR(sb);
|
|
got_one = 1;
|
|
goto S1;
|
|
}
|
|
|
|
S2:
|
|
switch (*sb) {
|
|
|
|
case '\0':
|
|
goto OUT;
|
|
|
|
default:
|
|
*ap = *sb;
|
|
ap++;
|
|
INC_CHKCURSOR(sb);
|
|
got_one = 1;
|
|
goto S1;
|
|
}
|
|
|
|
S3:
|
|
switch (*sb) {
|
|
|
|
case '\0':
|
|
goto OUT;
|
|
|
|
case '"':
|
|
INC_CHKCURSOR(sb);
|
|
goto S1;
|
|
|
|
default:
|
|
*ap = *sb;
|
|
ap++;
|
|
INC_CHKCURSOR(sb);
|
|
got_one = 1;
|
|
goto S3;
|
|
}
|
|
|
|
OUT:
|
|
if (got_one)
|
|
*ap++ = '\0';
|
|
argbase = ap; /* update storage pointer */
|
|
stringbase = sb; /* update scan pointer */
|
|
if (got_one) {
|
|
return (tmp);
|
|
}
|
|
switch (slrflag) {
|
|
case 0:
|
|
slrflag++;
|
|
break;
|
|
case 1:
|
|
slrflag++;
|
|
altarg = (char *) 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ((char *)0);
|
|
}
|
|
|
|
/*
|
|
* Help command.
|
|
* Call each command handler with argc == 0 and argv[0] == name.
|
|
*/
|
|
void
|
|
help(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
struct cmd *c;
|
|
|
|
if (argc == 1) {
|
|
StringList *buf;
|
|
|
|
buf = sl_init();
|
|
printf("%sommands may be abbreviated. Commands are:\n\n",
|
|
proxy ? "Proxy c" : "C");
|
|
for (c = cmdtab; c < &cmdtab[NCMDS]; c++)
|
|
if (c->c_name && (!proxy || c->c_proxy))
|
|
sl_add(buf, c->c_name);
|
|
list_vertical(buf);
|
|
sl_free(buf, 0);
|
|
return;
|
|
}
|
|
|
|
#define HELPINDENT ((int) sizeof("disconnect"))
|
|
|
|
while (--argc > 0) {
|
|
char *arg;
|
|
|
|
arg = *++argv;
|
|
c = getcmd(arg);
|
|
if (c == (struct cmd *)-1)
|
|
printf("?Ambiguous help command %s\n", arg);
|
|
else if (c == (struct cmd *)0)
|
|
printf("?Invalid help command %s\n", arg);
|
|
else
|
|
printf("%-*s\t%s\n", HELPINDENT,
|
|
c->c_name, c->c_help);
|
|
}
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr,
|
|
"usage: %s [-46adeginptUvV] [-P port] [-s src_addr] [host [port]]\n"
|
|
" %s host:path[/]\n"
|
|
" %s ftp://host[:port]/path[/]\n"
|
|
" %s http://host[:port]/file\n",
|
|
__progname, __progname, __progname, __progname);
|
|
exit(1);
|
|
}
|