752 lines
15 KiB
C
752 lines
15 KiB
C
/* $NetBSD: main.c,v 1.14 2000/12/30 18:00:18 itojun Exp $ */
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/*
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* Copyright (c) 1983, 1993
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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) 1983, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#if 0
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static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: main.c,v 1.14 2000/12/30 18:00:18 itojun Exp $");
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#endif
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#endif /* not lint */
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/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
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/*
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* TFTP 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 <ctype.h>
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#include <fcntl.h>
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#include <err.h>
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#include <errno.h>
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#include <netdb.h>
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#include <setjmp.h>
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#include <signal.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 "extern.h"
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#define TIMEOUT 5 /* secs between rexmt's */
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#define LBUFLEN 200 /* size of input buffer */
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struct sockaddr_storage peeraddr;
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int f;
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int trace;
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int verbose;
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int connected;
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char mode[32];
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char line[LBUFLEN];
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int margc;
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char *margv[20];
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char *prompt = "tftp";
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jmp_buf toplevel;
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void get __P((int, char **));
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void help __P((int, char **));
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void modecmd __P((int, char **));
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void put __P((int, char **));
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void quit __P((int, char **));
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void setascii __P((int, char **));
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void setbinary __P((int, char **));
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void setpeer0 __P((char *, char *));
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void setpeer __P((int, char **));
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void setrexmt __P((int, char **));
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void settimeout __P((int, char **));
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void settrace __P((int, char **));
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void setverbose __P((int, char **));
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void status __P((int, char **));
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char *tail __P((char *));
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int main __P((int, char *[]));
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void intr __P((int));
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struct cmd *getcmd __P((char *));
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static __dead void command __P((void));
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static void getusage __P((char *));
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static void makeargv __P((void));
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static void putusage __P((char *));
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static void settftpmode __P((char *));
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#define HELPINDENT (sizeof("connect"))
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struct cmd {
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char *name;
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char *help;
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void (*handler) __P((int, char **));
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};
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char vhelp[] = "toggle verbose mode";
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char thelp[] = "toggle packet tracing";
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char chelp[] = "connect to remote tftp";
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char qhelp[] = "exit tftp";
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char hhelp[] = "print help information";
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char shelp[] = "send file";
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char rhelp[] = "receive file";
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char mhelp[] = "set file transfer mode";
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char sthelp[] = "show current status";
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char xhelp[] = "set per-packet retransmission timeout";
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char ihelp[] = "set total retransmission timeout";
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char ashelp[] = "set mode to netascii";
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char bnhelp[] = "set mode to octet";
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struct cmd cmdtab[] = {
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{ "connect", chelp, setpeer },
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{ "mode", mhelp, modecmd },
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{ "put", shelp, put },
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{ "get", rhelp, get },
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{ "quit", qhelp, quit },
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{ "verbose", vhelp, setverbose },
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{ "trace", thelp, settrace },
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{ "status", sthelp, status },
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{ "binary", bnhelp, setbinary },
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{ "ascii", ashelp, setascii },
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{ "rexmt", xhelp, setrexmt },
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{ "timeout", ihelp, settimeout },
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{ "?", hhelp, help },
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{ 0 }
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};
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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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f = -1;
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strcpy(mode, "netascii");
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signal(SIGINT, intr);
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if (argc > 1) {
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if (setjmp(toplevel) != 0)
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exit(0);
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setpeer(argc, argv);
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}
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if (setjmp(toplevel) != 0)
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(void)putchar('\n');
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command();
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return (0);
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}
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char hostname[100];
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void
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setpeer0(host, port)
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char *host;
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char *port;
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{
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struct addrinfo hints, *res0, *res;
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int error;
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struct sockaddr_storage ss;
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char *cause = "unknown";
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if (connected) {
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close(f);
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f = -1;
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}
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connected = 0;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = PF_UNSPEC;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_protocol = IPPROTO_UDP;
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hints.ai_flags = AI_CANONNAME;
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if (!port)
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port = "tftp";
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error = getaddrinfo(host, port, &hints, &res0);
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if (error) {
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warnx("%s", gai_strerror(error));
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return;
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}
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for (res = res0; res; res = res->ai_next) {
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if (res->ai_addrlen > sizeof(peeraddr))
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continue;
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f = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
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if (f < 0) {
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cause = "socket";
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continue;
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}
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memset(&ss, 0, sizeof(ss));
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ss.ss_family = res->ai_family;
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ss.ss_len = res->ai_addrlen;
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if (bind(f, (struct sockaddr *)&ss, ss.ss_len) < 0) {
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cause = "bind";
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close(f);
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f = -1;
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continue;
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}
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break;
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}
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if (f < 0)
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warn("%s", cause);
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else {
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/* res->ai_addr <= sizeof(peeraddr) is guaranteed */
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memcpy(&peeraddr, res->ai_addr, res->ai_addrlen);
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if (res->ai_canonname) {
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(void) strncpy(hostname, res->ai_canonname,
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sizeof(hostname));
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} else
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(void) strncpy(hostname, host, sizeof(hostname));
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hostname[sizeof(hostname)-1] = 0;
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connected = 1;
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}
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freeaddrinfo(res0);
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}
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void
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setpeer(argc, argv)
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int argc;
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char *argv[];
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{
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if (argc < 2) {
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strcpy(line, "Connect ");
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printf("(to) ");
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fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
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makeargv();
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argc = margc;
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argv = margv;
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}
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if ((argc < 2) || (argc > 3)) {
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printf("usage: %s host-name [port]\n", argv[0]);
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return;
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}
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if (argc == 2)
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setpeer0(argv[1], NULL);
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else
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setpeer0(argv[1], argv[2]);
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}
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struct modes {
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char *m_name;
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char *m_mode;
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} modes[] = {
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{ "ascii", "netascii" },
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{ "netascii", "netascii" },
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{ "binary", "octet" },
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{ "image", "octet" },
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{ "octet", "octet" },
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/* { "mail", "mail" }, */
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{ 0, 0 }
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};
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void
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modecmd(argc, argv)
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int argc;
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char *argv[];
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{
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struct modes *p;
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char *sep;
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if (argc < 2) {
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printf("Using %s mode to transfer files.\n", mode);
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return;
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}
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if (argc == 2) {
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for (p = modes; p->m_name; p++)
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if (strcmp(argv[1], p->m_name) == 0)
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break;
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if (p->m_name) {
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settftpmode(p->m_mode);
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return;
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}
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printf("%s: unknown mode\n", argv[1]);
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/* drop through and print usage message */
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}
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printf("usage: %s [", argv[0]);
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sep = " ";
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for (p = modes; p->m_name; p++) {
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printf("%s%s", sep, p->m_name);
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if (*sep == ' ')
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sep = " | ";
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}
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printf(" ]\n");
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return;
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}
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void
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setbinary(argc, argv)
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int argc;
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char *argv[];
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{
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settftpmode("octet");
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}
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void
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setascii(argc, argv)
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int argc;
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char *argv[];
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{
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settftpmode("netascii");
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}
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static void
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settftpmode(newmode)
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char *newmode;
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{
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strcpy(mode, newmode);
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if (verbose)
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printf("mode set to %s\n", mode);
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}
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/*
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* Send file(s).
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*/
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void
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put(argc, argv)
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int argc;
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char *argv[];
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{
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int fd;
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int n;
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char *cp, *targ;
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if (argc < 2) {
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strcpy(line, "send ");
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printf("(file) ");
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fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
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makeargv();
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argc = margc;
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argv = margv;
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}
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if (argc < 2) {
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putusage(argv[0]);
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return;
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}
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targ = argv[argc - 1];
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if (strrchr(argv[argc - 1], ':')) {
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char *cp;
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for (n = 1; n < argc - 1; n++)
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if (strchr(argv[n], ':')) {
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putusage(argv[0]);
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return;
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}
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cp = argv[argc - 1];
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targ = strrchr(cp, ':');
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*targ++ = 0;
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if (cp[0] == '[' && cp[strlen(cp) - 1] == ']') {
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cp[strlen(cp) - 1] = '\0';
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cp++;
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}
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setpeer0(cp, NULL);
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}
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if (!connected) {
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printf("No target machine specified.\n");
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return;
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}
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if (argc < 4) {
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cp = argc == 2 ? tail(targ) : argv[1];
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fd = open(cp, O_RDONLY);
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if (fd < 0) {
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warn("%s", cp);
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return;
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}
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if (verbose)
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printf("putting %s to %s:%s [%s]\n",
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cp, hostname, targ, mode);
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sendfile(fd, targ, mode);
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return;
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}
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/* this assumes the target is a directory */
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/* on a remote unix system. hmmmm. */
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cp = strchr(targ, '\0');
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*cp++ = '/';
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for (n = 1; n < argc - 1; n++) {
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strcpy(cp, tail(argv[n]));
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fd = open(argv[n], O_RDONLY);
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if (fd < 0) {
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warn("%s", argv[n]);
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continue;
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}
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if (verbose)
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printf("putting %s to %s:%s [%s]\n",
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argv[n], hostname, targ, mode);
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sendfile(fd, targ, mode);
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}
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}
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static void
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putusage(s)
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char *s;
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{
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printf("usage: %s file ... host:target, or\n", s);
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printf(" %s file ... target (when already connected)\n", s);
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}
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/*
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* Receive file(s).
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*/
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void
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get(argc, argv)
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int argc;
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char *argv[];
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{
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int fd;
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int n;
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char *cp;
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char *src;
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if (argc < 2) {
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strcpy(line, "get ");
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printf("(files) ");
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fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
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makeargv();
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argc = margc;
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argv = margv;
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}
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if (argc < 2) {
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getusage(argv[0]);
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return;
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}
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if (!connected) {
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for (n = 1; n < argc ; n++)
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if (strrchr(argv[n], ':') == 0) {
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getusage(argv[0]);
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return;
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}
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}
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for (n = 1; n < argc ; n++) {
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src = strrchr(argv[n], ':');
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if (src == NULL)
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src = argv[n];
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else {
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char *cp;
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*src++ = 0;
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cp = argv[n];
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if (cp[0] == '[' && cp[strlen(cp) - 1] == ']') {
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cp[strlen(cp) - 1] = '\0';
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cp++;
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}
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setpeer0(cp, NULL);
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if (!connected)
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continue;
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}
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if (argc < 4) {
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cp = argc == 3 ? argv[2] : tail(src);
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fd = creat(cp, 0644);
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if (fd < 0) {
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warn("%s", cp);
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return;
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}
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if (verbose)
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printf("getting from %s:%s to %s [%s]\n",
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hostname, src, cp, mode);
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recvfile(fd, src, mode);
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break;
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}
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cp = tail(src); /* new .. jdg */
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fd = creat(cp, 0644);
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if (fd < 0) {
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warn("%s", cp);
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continue;
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}
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if (verbose)
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printf("getting from %s:%s to %s [%s]\n",
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hostname, src, cp, mode);
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recvfile(fd, src, mode);
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}
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}
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static void
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getusage(s)
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char *s;
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{
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printf("usage: %s host:file host:file ... file, or\n", s);
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printf(" %s file file ... file if connected\n", s);
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}
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int rexmtval = TIMEOUT;
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void
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setrexmt(argc, argv)
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int argc;
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char *argv[];
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{
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int t;
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if (argc < 2) {
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strcpy(line, "Rexmt-timeout ");
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printf("(value) ");
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fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
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makeargv();
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argc = margc;
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argv = margv;
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}
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if (argc != 2) {
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printf("usage: %s value\n", argv[0]);
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return;
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}
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t = atoi(argv[1]);
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if (t < 0)
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printf("%s: bad value\n", argv[1]);
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else
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rexmtval = t;
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}
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int maxtimeout = 5 * TIMEOUT;
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void
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settimeout(argc, argv)
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int argc;
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char *argv[];
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{
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int t;
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if (argc < 2) {
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strcpy(line, "Maximum-timeout ");
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printf("(value) ");
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fgets(&line[strlen(line)], LBUFLEN-strlen(line), stdin);
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makeargv();
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argc = margc;
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argv = margv;
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}
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if (argc != 2) {
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printf("usage: %s value\n", argv[0]);
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return;
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}
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t = atoi(argv[1]);
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if (t < 0)
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printf("%s: bad value\n", argv[1]);
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else
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maxtimeout = t;
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}
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|
|
void
|
|
status(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
if (connected)
|
|
printf("Connected to %s.\n", hostname);
|
|
else
|
|
printf("Not connected.\n");
|
|
printf("Mode: %s Verbose: %s Tracing: %s\n", mode,
|
|
verbose ? "on" : "off", trace ? "on" : "off");
|
|
printf("Rexmt-interval: %d seconds, Max-timeout: %d seconds\n",
|
|
rexmtval, maxtimeout);
|
|
}
|
|
|
|
void
|
|
intr(dummy)
|
|
int dummy;
|
|
{
|
|
|
|
signal(SIGALRM, SIG_IGN);
|
|
alarm(0);
|
|
longjmp(toplevel, -1);
|
|
}
|
|
|
|
char *
|
|
tail(filename)
|
|
char *filename;
|
|
{
|
|
char *s;
|
|
|
|
while (*filename) {
|
|
s = strrchr(filename, '/');
|
|
if (s == NULL)
|
|
break;
|
|
if (s[1])
|
|
return (s + 1);
|
|
*s = '\0';
|
|
}
|
|
return (filename);
|
|
}
|
|
|
|
/*
|
|
* Command parser.
|
|
*/
|
|
static __dead void
|
|
command()
|
|
{
|
|
struct cmd *c;
|
|
|
|
for (;;) {
|
|
printf("%s> ", prompt);
|
|
if (fgets(line, LBUFLEN, stdin) == 0) {
|
|
if (feof(stdin)) {
|
|
exit(0);
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
if ((line[0] == 0) || (line[0] == '\n'))
|
|
continue;
|
|
makeargv();
|
|
if (margc == 0)
|
|
continue;
|
|
c = getcmd(margv[0]);
|
|
if (c == (struct cmd *)-1) {
|
|
printf("?Ambiguous command\n");
|
|
continue;
|
|
}
|
|
if (c == 0) {
|
|
printf("?Invalid command\n");
|
|
continue;
|
|
}
|
|
(*c->handler)(margc, margv);
|
|
}
|
|
}
|
|
|
|
struct cmd *
|
|
getcmd(name)
|
|
char *name;
|
|
{
|
|
char *p, *q;
|
|
struct cmd *c, *found;
|
|
int nmatches, longest;
|
|
|
|
longest = 0;
|
|
nmatches = 0;
|
|
found = 0;
|
|
for (c = cmdtab; (p = c->name) != NULL; c++) {
|
|
for (q = name; *q == *p++; q++)
|
|
if (*q == 0) /* exact match? */
|
|
return (c);
|
|
if (!*q) { /* the name was a prefix */
|
|
if (q - name > longest) {
|
|
longest = q - name;
|
|
nmatches = 1;
|
|
found = c;
|
|
} else if (q - name == longest)
|
|
nmatches++;
|
|
}
|
|
}
|
|
if (nmatches > 1)
|
|
return ((struct cmd *)-1);
|
|
return (found);
|
|
}
|
|
|
|
/*
|
|
* Slice a string up into argc/argv.
|
|
*/
|
|
static void
|
|
makeargv()
|
|
{
|
|
char *cp;
|
|
char **argp = margv;
|
|
|
|
margc = 0;
|
|
for (cp = line; *cp;) {
|
|
while (isspace((unsigned char)*cp))
|
|
cp++;
|
|
if (*cp == '\0')
|
|
break;
|
|
*argp++ = cp;
|
|
margc += 1;
|
|
while (*cp != '\0' && !isspace((unsigned char)*cp))
|
|
cp++;
|
|
if (*cp == '\0')
|
|
break;
|
|
*cp++ = '\0';
|
|
}
|
|
*argp++ = 0;
|
|
}
|
|
|
|
void
|
|
quit(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* Help command.
|
|
*/
|
|
void
|
|
help(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
struct cmd *c;
|
|
|
|
if (argc == 1) {
|
|
printf("Commands may be abbreviated. Commands are:\n\n");
|
|
for (c = cmdtab; c->name; c++)
|
|
printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help);
|
|
return;
|
|
}
|
|
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\n", c->help);
|
|
}
|
|
}
|
|
|
|
void
|
|
settrace(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
trace = !trace;
|
|
printf("Packet tracing %s.\n", trace ? "on" : "off");
|
|
}
|
|
|
|
void
|
|
setverbose(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
verbose = !verbose;
|
|
printf("Verbose mode %s.\n", verbose ? "on" : "off");
|
|
}
|