1535 lines
32 KiB
C
1535 lines
32 KiB
C
/*
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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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#ifndef lint
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static char sccsid[] = "@(#)ftp.c 8.4 (Berkeley) 4/6/94";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/file.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include <arpa/ftp.h>
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#include <arpa/telnet.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <pwd.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 <varargs.h>
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#include "ftp_var.h"
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extern int h_errno;
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struct sockaddr_in hisctladdr;
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struct sockaddr_in data_addr;
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int data = -1;
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int abrtflag = 0;
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jmp_buf ptabort;
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int ptabflg;
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int ptflag = 0;
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struct sockaddr_in myctladdr;
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off_t restart_point = 0;
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|
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FILE *cin, *cout;
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char *
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hookup(host, port)
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char *host;
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int port;
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{
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struct hostent *hp = 0;
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int s, len, tos;
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static char hostnamebuf[80];
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memset((char *)&hisctladdr, 0, sizeof (hisctladdr));
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hisctladdr.sin_addr.s_addr = inet_addr(host);
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if (hisctladdr.sin_addr.s_addr != -1) {
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hisctladdr.sin_family = AF_INET;
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(void) strncpy(hostnamebuf, host, sizeof(hostnamebuf));
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} else {
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hp = gethostbyname(host);
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if (hp == NULL) {
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warnx("%s: %s", host, hstrerror(h_errno));
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code = -1;
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return ((char *) 0);
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}
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hisctladdr.sin_family = hp->h_addrtype;
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memmove((caddr_t)&hisctladdr.sin_addr,
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hp->h_addr_list[0], hp->h_length);
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(void) strncpy(hostnamebuf, hp->h_name, sizeof(hostnamebuf));
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}
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hostname = hostnamebuf;
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s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
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if (s < 0) {
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warn("socket");
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code = -1;
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return (0);
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}
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hisctladdr.sin_port = port;
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while (connect(s, (struct sockaddr *)&hisctladdr, sizeof (hisctladdr)) < 0) {
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if (hp && hp->h_addr_list[1]) {
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int oerrno = errno;
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char *ia;
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ia = inet_ntoa(hisctladdr.sin_addr);
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errno = oerrno;
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warn("connect to address %s", ia);
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hp->h_addr_list++;
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memmove((caddr_t)&hisctladdr.sin_addr,
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hp->h_addr_list[0], hp->h_length);
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fprintf(stdout, "Trying %s...\n",
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inet_ntoa(hisctladdr.sin_addr));
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(void) close(s);
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s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
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if (s < 0) {
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warn("socket");
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code = -1;
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return (0);
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}
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continue;
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}
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warn("connect");
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code = -1;
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goto bad;
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}
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len = sizeof (myctladdr);
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if (getsockname(s, (struct sockaddr *)&myctladdr, &len) < 0) {
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warn("getsockname");
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code = -1;
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goto bad;
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}
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#ifdef IP_TOS
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tos = IPTOS_LOWDELAY;
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if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
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warn("setsockopt TOS (ignored)");
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#endif
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cin = fdopen(s, "r");
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cout = fdopen(s, "w");
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if (cin == NULL || cout == NULL) {
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warnx("fdopen failed.");
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if (cin)
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(void) fclose(cin);
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if (cout)
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(void) fclose(cout);
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code = -1;
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goto bad;
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}
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if (verbose)
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printf("Connected to %s.\n", hostname);
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if (getreply(0) > 2) { /* read startup message from server */
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if (cin)
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(void) fclose(cin);
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if (cout)
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(void) fclose(cout);
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code = -1;
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goto bad;
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}
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#ifdef SO_OOBINLINE
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{
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int on = 1;
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if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char *)&on, sizeof(on))
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< 0 && debug) {
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warn("setsockopt");
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}
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}
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#endif /* SO_OOBINLINE */
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return (hostname);
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bad:
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(void) close(s);
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return ((char *)0);
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}
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int
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login(host)
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char *host;
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{
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char tmp[80];
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char *user, *pass, *acct;
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int n, aflag = 0;
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user = pass = acct = 0;
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if (ruserpass(host, &user, &pass, &acct) < 0) {
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code = -1;
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return (0);
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}
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while (user == NULL) {
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char *myname = getlogin();
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if (myname == NULL) {
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struct passwd *pp = getpwuid(getuid());
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if (pp != NULL)
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myname = pp->pw_name;
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}
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if (myname)
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printf("Name (%s:%s): ", host, myname);
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else
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printf("Name (%s): ", host);
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(void) fgets(tmp, sizeof(tmp) - 1, stdin);
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tmp[strlen(tmp) - 1] = '\0';
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if (*tmp == '\0')
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user = myname;
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else
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user = tmp;
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}
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n = command("USER %s", user);
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if (n == CONTINUE) {
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if (pass == NULL)
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pass = getpass("Password:");
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n = command("PASS %s", pass);
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}
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if (n == CONTINUE) {
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aflag++;
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acct = getpass("Account:");
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n = command("ACCT %s", acct);
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}
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if (n != COMPLETE) {
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warnx("Login failed.");
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return (0);
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}
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if (!aflag && acct != NULL)
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(void) command("ACCT %s", acct);
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if (proxy)
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return (1);
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for (n = 0; n < macnum; ++n) {
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if (!strcmp("init", macros[n].mac_name)) {
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(void) strcpy(line, "$init");
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makeargv();
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domacro(margc, margv);
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break;
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}
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}
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return (1);
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}
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void
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cmdabort()
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{
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printf("\n");
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(void) fflush(stdout);
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abrtflag++;
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if (ptflag)
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longjmp(ptabort,1);
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}
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/*VARARGS*/
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int
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command(va_alist)
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va_dcl
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{
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va_list ap;
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char *fmt;
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int r;
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sig_t oldintr;
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abrtflag = 0;
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if (debug) {
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printf("---> ");
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va_start(ap);
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fmt = va_arg(ap, char *);
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if (strncmp("PASS ", fmt, 5) == 0)
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printf("PASS XXXX");
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else
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vfprintf(stdout, fmt, ap);
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va_end(ap);
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printf("\n");
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(void) fflush(stdout);
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}
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if (cout == NULL) {
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warn("No control connection for command");
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code = -1;
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return (0);
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}
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oldintr = signal(SIGINT, cmdabort);
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va_start(ap);
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fmt = va_arg(ap, char *);
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vfprintf(cout, fmt, ap);
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va_end(ap);
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fprintf(cout, "\r\n");
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(void) fflush(cout);
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cpend = 1;
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r = getreply(!strcmp(fmt, "QUIT"));
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if (abrtflag && oldintr != SIG_IGN)
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(*oldintr)(SIGINT);
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(void) signal(SIGINT, oldintr);
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return (r);
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}
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char reply_string[BUFSIZ]; /* last line of previous reply */
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int
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getreply(expecteof)
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int expecteof;
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{
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int c, n;
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int dig;
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int originalcode = 0, continuation = 0;
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sig_t oldintr;
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int pflag = 0;
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char *cp, *pt = pasv;
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oldintr = signal(SIGINT, cmdabort);
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for (;;) {
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dig = n = code = 0;
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cp = reply_string;
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while ((c = getc(cin)) != '\n') {
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if (c == IAC) { /* handle telnet commands */
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switch (c = getc(cin)) {
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case WILL:
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case WONT:
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c = getc(cin);
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fprintf(cout, "%c%c%c", IAC, DONT, c);
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(void) fflush(cout);
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break;
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case DO:
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case DONT:
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c = getc(cin);
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fprintf(cout, "%c%c%c", IAC, WONT, c);
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(void) fflush(cout);
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break;
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default:
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break;
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}
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continue;
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}
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dig++;
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if (c == EOF) {
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if (expecteof) {
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(void) signal(SIGINT,oldintr);
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code = 221;
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return (0);
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}
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lostpeer();
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if (verbose) {
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printf("421 Service not available, remote server has closed connection\n");
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(void) fflush(stdout);
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}
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code = 421;
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return (4);
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}
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if (c != '\r' && (verbose > 0 ||
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(verbose > -1 && n == '5' && dig > 4))) {
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if (proxflag &&
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(dig == 1 || dig == 5 && verbose == 0))
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printf("%s:",hostname);
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(void) putchar(c);
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}
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if (dig < 4 && isdigit(c))
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code = code * 10 + (c - '0');
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if (!pflag && code == 227)
|
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pflag = 1;
|
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if (dig > 4 && pflag == 1 && isdigit(c))
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pflag = 2;
|
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if (pflag == 2) {
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if (c != '\r' && c != ')')
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*pt++ = c;
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else {
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*pt = '\0';
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pflag = 3;
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}
|
|
}
|
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if (dig == 4 && c == '-') {
|
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if (continuation)
|
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code = 0;
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continuation++;
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}
|
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if (n == 0)
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n = c;
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if (cp < &reply_string[sizeof(reply_string) - 1])
|
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*cp++ = c;
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}
|
|
if (verbose > 0 || verbose > -1 && n == '5') {
|
|
(void) putchar(c);
|
|
(void) fflush (stdout);
|
|
}
|
|
if (continuation && code != originalcode) {
|
|
if (originalcode == 0)
|
|
originalcode = code;
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continue;
|
|
}
|
|
*cp = '\0';
|
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if (n != '1')
|
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cpend = 0;
|
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(void) signal(SIGINT,oldintr);
|
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if (code == 421 || originalcode == 421)
|
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lostpeer();
|
|
if (abrtflag && oldintr != cmdabort && oldintr != SIG_IGN)
|
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(*oldintr)(SIGINT);
|
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return (n - '0');
|
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}
|
|
}
|
|
|
|
int
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|
empty(mask, sec)
|
|
struct fd_set *mask;
|
|
int sec;
|
|
{
|
|
struct timeval t;
|
|
|
|
t.tv_sec = (long) sec;
|
|
t.tv_usec = 0;
|
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return (select(32, mask, (struct fd_set *) 0, (struct fd_set *) 0, &t));
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}
|
|
|
|
jmp_buf sendabort;
|
|
|
|
void
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|
abortsend()
|
|
{
|
|
|
|
mflag = 0;
|
|
abrtflag = 0;
|
|
printf("\nsend aborted\nwaiting for remote to finish abort\n");
|
|
(void) fflush(stdout);
|
|
longjmp(sendabort, 1);
|
|
}
|
|
|
|
#define HASHBYTES 1024
|
|
|
|
void
|
|
sendrequest(cmd, local, remote, printnames)
|
|
char *cmd, *local, *remote;
|
|
int printnames;
|
|
{
|
|
struct stat st;
|
|
struct timeval start, stop;
|
|
int c, d;
|
|
FILE *fin, *dout = 0, *popen();
|
|
int (*closefunc) __P((FILE *));
|
|
sig_t oldintr, oldintp;
|
|
long bytes = 0, hashbytes = HASHBYTES;
|
|
char *lmode, buf[BUFSIZ], *bufp;
|
|
|
|
if (verbose && printnames) {
|
|
if (local && *local != '-')
|
|
printf("local: %s ", local);
|
|
if (remote)
|
|
printf("remote: %s\n", remote);
|
|
}
|
|
if (proxy) {
|
|
proxtrans(cmd, local, remote);
|
|
return;
|
|
}
|
|
if (curtype != type)
|
|
changetype(type, 0);
|
|
closefunc = NULL;
|
|
oldintr = NULL;
|
|
oldintp = NULL;
|
|
lmode = "w";
|
|
if (setjmp(sendabort)) {
|
|
while (cpend) {
|
|
(void) getreply(0);
|
|
}
|
|
if (data >= 0) {
|
|
(void) close(data);
|
|
data = -1;
|
|
}
|
|
if (oldintr)
|
|
(void) signal(SIGINT,oldintr);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE,oldintp);
|
|
code = -1;
|
|
return;
|
|
}
|
|
oldintr = signal(SIGINT, abortsend);
|
|
if (strcmp(local, "-") == 0)
|
|
fin = stdin;
|
|
else if (*local == '|') {
|
|
oldintp = signal(SIGPIPE,SIG_IGN);
|
|
fin = popen(local + 1, "r");
|
|
if (fin == NULL) {
|
|
warn("%s", local + 1);
|
|
(void) signal(SIGINT, oldintr);
|
|
(void) signal(SIGPIPE, oldintp);
|
|
code = -1;
|
|
return;
|
|
}
|
|
closefunc = pclose;
|
|
} else {
|
|
fin = fopen(local, "r");
|
|
if (fin == NULL) {
|
|
warn("local: %s", local);
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
closefunc = fclose;
|
|
if (fstat(fileno(fin), &st) < 0 ||
|
|
(st.st_mode&S_IFMT) != S_IFREG) {
|
|
fprintf(stdout, "%s: not a plain file.\n", local);
|
|
(void) signal(SIGINT, oldintr);
|
|
fclose(fin);
|
|
code = -1;
|
|
return;
|
|
}
|
|
}
|
|
if (initconn()) {
|
|
(void) signal(SIGINT, oldintr);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE, oldintp);
|
|
code = -1;
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fin);
|
|
return;
|
|
}
|
|
if (setjmp(sendabort))
|
|
goto abort;
|
|
|
|
if (restart_point &&
|
|
(strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
|
|
int rc;
|
|
|
|
switch (curtype) {
|
|
case TYPE_A:
|
|
rc = fseek(fin, (long) restart_point, SEEK_SET);
|
|
break;
|
|
case TYPE_I:
|
|
case TYPE_L:
|
|
rc = lseek(fileno(fin), restart_point, SEEK_SET);
|
|
break;
|
|
}
|
|
if (rc < 0) {
|
|
warn("local: %s", local);
|
|
restart_point = 0;
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fin);
|
|
return;
|
|
}
|
|
if (command("REST %ld", (long) restart_point)
|
|
!= CONTINUE) {
|
|
restart_point = 0;
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fin);
|
|
return;
|
|
}
|
|
restart_point = 0;
|
|
lmode = "r+w";
|
|
}
|
|
if (remote) {
|
|
if (command("%s %s", cmd, remote) != PRELIM) {
|
|
(void) signal(SIGINT, oldintr);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE, oldintp);
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fin);
|
|
return;
|
|
}
|
|
} else
|
|
if (command("%s", cmd) != PRELIM) {
|
|
(void) signal(SIGINT, oldintr);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE, oldintp);
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fin);
|
|
return;
|
|
}
|
|
dout = dataconn(lmode);
|
|
if (dout == NULL)
|
|
goto abort;
|
|
(void) gettimeofday(&start, (struct timezone *)0);
|
|
oldintp = signal(SIGPIPE, SIG_IGN);
|
|
switch (curtype) {
|
|
|
|
case TYPE_I:
|
|
case TYPE_L:
|
|
errno = d = 0;
|
|
while ((c = read(fileno(fin), buf, sizeof (buf))) > 0) {
|
|
bytes += c;
|
|
for (bufp = buf; c > 0; c -= d, bufp += d)
|
|
if ((d = write(fileno(dout), bufp, c)) <= 0)
|
|
break;
|
|
if (hash) {
|
|
while (bytes >= hashbytes) {
|
|
(void) putchar('#');
|
|
hashbytes += HASHBYTES;
|
|
}
|
|
(void) fflush(stdout);
|
|
}
|
|
}
|
|
if (hash && bytes > 0) {
|
|
if (bytes < HASHBYTES)
|
|
(void) putchar('#');
|
|
(void) putchar('\n');
|
|
(void) fflush(stdout);
|
|
}
|
|
if (c < 0)
|
|
warn("local: %s", local);
|
|
if (d < 0) {
|
|
if (errno != EPIPE)
|
|
warn("netout");
|
|
bytes = -1;
|
|
}
|
|
break;
|
|
|
|
case TYPE_A:
|
|
while ((c = getc(fin)) != EOF) {
|
|
if (c == '\n') {
|
|
while (hash && (bytes >= hashbytes)) {
|
|
(void) putchar('#');
|
|
(void) fflush(stdout);
|
|
hashbytes += HASHBYTES;
|
|
}
|
|
if (ferror(dout))
|
|
break;
|
|
(void) putc('\r', dout);
|
|
bytes++;
|
|
}
|
|
(void) putc(c, dout);
|
|
bytes++;
|
|
/* if (c == '\r') { */
|
|
/* (void) putc('\0', dout); // this violates rfc */
|
|
/* bytes++; */
|
|
/* } */
|
|
}
|
|
if (hash) {
|
|
if (bytes < hashbytes)
|
|
(void) putchar('#');
|
|
(void) putchar('\n');
|
|
(void) fflush(stdout);
|
|
}
|
|
if (ferror(fin))
|
|
warn("local: %s", local);
|
|
if (ferror(dout)) {
|
|
if (errno != EPIPE)
|
|
warn("netout");
|
|
bytes = -1;
|
|
}
|
|
break;
|
|
}
|
|
(void) gettimeofday(&stop, (struct timezone *)0);
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fin);
|
|
(void) fclose(dout);
|
|
(void) getreply(0);
|
|
(void) signal(SIGINT, oldintr);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE, oldintp);
|
|
if (bytes > 0)
|
|
ptransfer("sent", bytes, &start, &stop);
|
|
return;
|
|
abort:
|
|
(void) gettimeofday(&stop, (struct timezone *)0);
|
|
(void) signal(SIGINT, oldintr);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE, oldintp);
|
|
if (!cpend) {
|
|
code = -1;
|
|
return;
|
|
}
|
|
if (data >= 0) {
|
|
(void) close(data);
|
|
data = -1;
|
|
}
|
|
if (dout)
|
|
(void) fclose(dout);
|
|
(void) getreply(0);
|
|
code = -1;
|
|
if (closefunc != NULL && fin != NULL)
|
|
(*closefunc)(fin);
|
|
if (bytes > 0)
|
|
ptransfer("sent", bytes, &start, &stop);
|
|
}
|
|
|
|
jmp_buf recvabort;
|
|
|
|
void
|
|
abortrecv()
|
|
{
|
|
|
|
mflag = 0;
|
|
abrtflag = 0;
|
|
printf("\nreceive aborted\nwaiting for remote to finish abort\n");
|
|
(void) fflush(stdout);
|
|
longjmp(recvabort, 1);
|
|
}
|
|
|
|
void
|
|
recvrequest(cmd, local, remote, lmode, printnames)
|
|
char *cmd, *local, *remote, *lmode;
|
|
int printnames;
|
|
{
|
|
FILE *fout, *din = 0;
|
|
int (*closefunc) __P((FILE *));
|
|
sig_t oldintr, oldintp;
|
|
int c, d, is_retr, tcrflag, bare_lfs = 0;
|
|
static int bufsize;
|
|
static char *buf;
|
|
long bytes = 0, hashbytes = HASHBYTES;
|
|
struct timeval start, stop;
|
|
struct stat st;
|
|
|
|
is_retr = strcmp(cmd, "RETR") == 0;
|
|
if (is_retr && verbose && printnames) {
|
|
if (local && *local != '-')
|
|
printf("local: %s ", local);
|
|
if (remote)
|
|
printf("remote: %s\n", remote);
|
|
}
|
|
if (proxy && is_retr) {
|
|
proxtrans(cmd, local, remote);
|
|
return;
|
|
}
|
|
closefunc = NULL;
|
|
oldintr = NULL;
|
|
oldintp = NULL;
|
|
tcrflag = !crflag && is_retr;
|
|
if (setjmp(recvabort)) {
|
|
while (cpend) {
|
|
(void) getreply(0);
|
|
}
|
|
if (data >= 0) {
|
|
(void) close(data);
|
|
data = -1;
|
|
}
|
|
if (oldintr)
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
oldintr = signal(SIGINT, abortrecv);
|
|
if (strcmp(local, "-") && *local != '|') {
|
|
if (access(local, 2) < 0) {
|
|
char *dir = strrchr(local, '/');
|
|
|
|
if (errno != ENOENT && errno != EACCES) {
|
|
warn("local: %s", local);
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
if (dir != NULL)
|
|
*dir = 0;
|
|
d = access(dir == local ? "/" : dir ? local : ".", 2);
|
|
if (dir != NULL)
|
|
*dir = '/';
|
|
if (d < 0) {
|
|
warn("local: %s", local);
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
if (!runique && errno == EACCES &&
|
|
chmod(local, 0600) < 0) {
|
|
warn("local: %s", local);
|
|
(void) signal(SIGINT, oldintr);
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
if (runique && errno == EACCES &&
|
|
(local = gunique(local)) == NULL) {
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
}
|
|
else if (runique && (local = gunique(local)) == NULL) {
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
}
|
|
if (!is_retr) {
|
|
if (curtype != TYPE_A)
|
|
changetype(TYPE_A, 0);
|
|
} else if (curtype != type)
|
|
changetype(type, 0);
|
|
if (initconn()) {
|
|
(void) signal(SIGINT, oldintr);
|
|
code = -1;
|
|
return;
|
|
}
|
|
if (setjmp(recvabort))
|
|
goto abort;
|
|
if (is_retr && restart_point &&
|
|
command("REST %ld", (long) restart_point) != CONTINUE)
|
|
return;
|
|
if (remote) {
|
|
if (command("%s %s", cmd, remote) != PRELIM) {
|
|
(void) signal(SIGINT, oldintr);
|
|
return;
|
|
}
|
|
} else {
|
|
if (command("%s", cmd) != PRELIM) {
|
|
(void) signal(SIGINT, oldintr);
|
|
return;
|
|
}
|
|
}
|
|
din = dataconn("r");
|
|
if (din == NULL)
|
|
goto abort;
|
|
if (strcmp(local, "-") == 0)
|
|
fout = stdout;
|
|
else if (*local == '|') {
|
|
oldintp = signal(SIGPIPE, SIG_IGN);
|
|
fout = popen(local + 1, "w");
|
|
if (fout == NULL) {
|
|
warn("%s", local+1);
|
|
goto abort;
|
|
}
|
|
closefunc = pclose;
|
|
} else {
|
|
fout = fopen(local, lmode);
|
|
if (fout == NULL) {
|
|
warn("local: %s", local);
|
|
goto abort;
|
|
}
|
|
closefunc = fclose;
|
|
}
|
|
if (fstat(fileno(fout), &st) < 0 || st.st_blksize == 0)
|
|
st.st_blksize = BUFSIZ;
|
|
if (st.st_blksize > bufsize) {
|
|
if (buf)
|
|
(void) free(buf);
|
|
buf = malloc((unsigned)st.st_blksize);
|
|
if (buf == NULL) {
|
|
warn("malloc");
|
|
bufsize = 0;
|
|
goto abort;
|
|
}
|
|
bufsize = st.st_blksize;
|
|
}
|
|
(void) gettimeofday(&start, (struct timezone *)0);
|
|
switch (curtype) {
|
|
|
|
case TYPE_I:
|
|
case TYPE_L:
|
|
if (restart_point &&
|
|
lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
|
|
warn("local: %s", local);
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fout);
|
|
return;
|
|
}
|
|
errno = d = 0;
|
|
while ((c = read(fileno(din), buf, bufsize)) > 0) {
|
|
if ((d = write(fileno(fout), buf, c)) != c)
|
|
break;
|
|
bytes += c;
|
|
if (hash) {
|
|
while (bytes >= hashbytes) {
|
|
(void) putchar('#');
|
|
hashbytes += HASHBYTES;
|
|
}
|
|
(void) fflush(stdout);
|
|
}
|
|
}
|
|
if (hash && bytes > 0) {
|
|
if (bytes < HASHBYTES)
|
|
(void) putchar('#');
|
|
(void) putchar('\n');
|
|
(void) fflush(stdout);
|
|
}
|
|
if (c < 0) {
|
|
if (errno != EPIPE)
|
|
warn("netin");
|
|
bytes = -1;
|
|
}
|
|
if (d < c) {
|
|
if (d < 0)
|
|
warn("local: %s", local);
|
|
else
|
|
warnx("%s: short write", local);
|
|
}
|
|
break;
|
|
|
|
case TYPE_A:
|
|
if (restart_point) {
|
|
int i, n, ch;
|
|
|
|
if (fseek(fout, 0L, SEEK_SET) < 0)
|
|
goto done;
|
|
n = restart_point;
|
|
for (i = 0; i++ < n;) {
|
|
if ((ch = getc(fout)) == EOF)
|
|
goto done;
|
|
if (ch == '\n')
|
|
i++;
|
|
}
|
|
if (fseek(fout, 0L, SEEK_CUR) < 0) {
|
|
done:
|
|
warn("local: %s", local);
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fout);
|
|
return;
|
|
}
|
|
}
|
|
while ((c = getc(din)) != EOF) {
|
|
if (c == '\n')
|
|
bare_lfs++;
|
|
while (c == '\r') {
|
|
while (hash && (bytes >= hashbytes)) {
|
|
(void) putchar('#');
|
|
(void) fflush(stdout);
|
|
hashbytes += HASHBYTES;
|
|
}
|
|
bytes++;
|
|
if ((c = getc(din)) != '\n' || tcrflag) {
|
|
if (ferror(fout))
|
|
goto break2;
|
|
(void) putc('\r', fout);
|
|
if (c == '\0') {
|
|
bytes++;
|
|
goto contin2;
|
|
}
|
|
if (c == EOF)
|
|
goto contin2;
|
|
}
|
|
}
|
|
(void) putc(c, fout);
|
|
bytes++;
|
|
contin2: ;
|
|
}
|
|
break2:
|
|
if (bare_lfs) {
|
|
printf("WARNING! %d bare linefeeds received in ASCII mode\n", bare_lfs);
|
|
printf("File may not have transferred correctly.\n");
|
|
}
|
|
if (hash) {
|
|
if (bytes < hashbytes)
|
|
(void) putchar('#');
|
|
(void) putchar('\n');
|
|
(void) fflush(stdout);
|
|
}
|
|
if (ferror(din)) {
|
|
if (errno != EPIPE)
|
|
warn("netin");
|
|
bytes = -1;
|
|
}
|
|
if (ferror(fout))
|
|
warn("local: %s", local);
|
|
break;
|
|
}
|
|
if (closefunc != NULL)
|
|
(*closefunc)(fout);
|
|
(void) signal(SIGINT, oldintr);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE, oldintp);
|
|
(void) gettimeofday(&stop, (struct timezone *)0);
|
|
(void) fclose(din);
|
|
(void) getreply(0);
|
|
if (bytes > 0 && is_retr)
|
|
ptransfer("received", bytes, &start, &stop);
|
|
return;
|
|
abort:
|
|
|
|
/* abort using RFC959 recommended IP,SYNC sequence */
|
|
|
|
(void) gettimeofday(&stop, (struct timezone *)0);
|
|
if (oldintp)
|
|
(void) signal(SIGPIPE, oldintr);
|
|
(void) signal(SIGINT, SIG_IGN);
|
|
if (!cpend) {
|
|
code = -1;
|
|
(void) signal(SIGINT, oldintr);
|
|
return;
|
|
}
|
|
|
|
abort_remote(din);
|
|
code = -1;
|
|
if (data >= 0) {
|
|
(void) close(data);
|
|
data = -1;
|
|
}
|
|
if (closefunc != NULL && fout != NULL)
|
|
(*closefunc)(fout);
|
|
if (din)
|
|
(void) fclose(din);
|
|
if (bytes > 0)
|
|
ptransfer("received", bytes, &start, &stop);
|
|
(void) signal(SIGINT, oldintr);
|
|
}
|
|
|
|
/*
|
|
* Need to start a listen on the data channel before we send the command,
|
|
* otherwise the server's connect may fail.
|
|
*/
|
|
int
|
|
initconn()
|
|
{
|
|
char *p, *a;
|
|
int result, len, tmpno = 0;
|
|
int on = 1;
|
|
int tos, ports;
|
|
u_long a1,a2,a3,a4,p1,p2;
|
|
|
|
if (passivemode) {
|
|
data = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (data < 0) {
|
|
perror("ftp: socket");
|
|
return(1);
|
|
}
|
|
if (options & SO_DEBUG &&
|
|
setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on,
|
|
sizeof (on)) < 0)
|
|
perror("ftp: setsockopt (ignored)");
|
|
if (command("PASV") != COMPLETE) {
|
|
printf("Passive mode refused.\n");
|
|
return(1);
|
|
}
|
|
|
|
/*
|
|
* What we've got at this point is a string of comma separated
|
|
* one-byte unsigned integer values, separated by commas.
|
|
* The first four are the an IP address. The fifth is the MSB
|
|
* of the port number, the sixth is the LSB. From that we'll
|
|
* prepare a sockaddr_in.
|
|
*/
|
|
|
|
if (sscanf(pasv,"%d,%d,%d,%d,%d,%d",&a1,&a2,&a3,&a4,&p1,&p2)
|
|
!= 6) {
|
|
printf("Passive mode address scan failure. Shouldn't happen!\n");
|
|
return(1);
|
|
};
|
|
|
|
data_addr.sin_family = AF_INET;
|
|
data_addr.sin_addr.s_addr = htonl((a1 << 24) | (a2 << 16) |
|
|
(a3 << 8) | a4);
|
|
data_addr.sin_port = htons((p1 << 8) | p2);
|
|
|
|
if (connect(data, (struct sockaddr *) &data_addr,
|
|
sizeof(data_addr))<0) {
|
|
perror("ftp: connect");
|
|
return(1);
|
|
}
|
|
#ifdef IP_TOS
|
|
tos = IPTOS_THROUGHPUT;
|
|
if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&tos,
|
|
sizeof(tos)) < 0)
|
|
perror("ftp: setsockopt TOS (ignored)");
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
noport:
|
|
data_addr = myctladdr;
|
|
if (sendport)
|
|
data_addr.sin_port = 0; /* let system pick one */
|
|
if (data != -1)
|
|
(void) close(data);
|
|
data = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (data < 0) {
|
|
warn("socket");
|
|
if (tmpno)
|
|
sendport = 1;
|
|
return (1);
|
|
}
|
|
if (!sendport)
|
|
if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR, (char *)&on,
|
|
sizeof (on)) < 0) {
|
|
warn("setsockopt (reuse address)");
|
|
goto bad;
|
|
}
|
|
#ifdef IP_PORTRANGE
|
|
ports = restricted_data_ports ? IP_PORTRANGE_HIGH : IP_PORTRANGE_DEFAULT;
|
|
if (setsockopt(data, IPPROTO_IP, IP_PORTRANGE, (char *)&ports,
|
|
sizeof (ports)) < 0)
|
|
warn("setsockopt PORTRANGE (ignored)");
|
|
#endif
|
|
if (bind(data, (struct sockaddr *)&data_addr, sizeof (data_addr)) < 0) {
|
|
warn("bind");
|
|
goto bad;
|
|
}
|
|
if (options & SO_DEBUG &&
|
|
setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof (on)) < 0)
|
|
warn("setsockopt (ignored)");
|
|
len = sizeof (data_addr);
|
|
if (getsockname(data, (struct sockaddr *)&data_addr, &len) < 0) {
|
|
warn("getsockname");
|
|
goto bad;
|
|
}
|
|
if (listen(data, 1) < 0)
|
|
warn("listen");
|
|
if (sendport) {
|
|
a = (char *)&data_addr.sin_addr;
|
|
p = (char *)&data_addr.sin_port;
|
|
#define UC(b) (((int)b)&0xff)
|
|
result =
|
|
command("PORT %d,%d,%d,%d,%d,%d",
|
|
UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]),
|
|
UC(p[0]), UC(p[1]));
|
|
if (result == ERROR && sendport == -1) {
|
|
sendport = 0;
|
|
tmpno = 1;
|
|
goto noport;
|
|
}
|
|
return (result != COMPLETE);
|
|
}
|
|
if (tmpno)
|
|
sendport = 1;
|
|
#ifdef IP_TOS
|
|
on = IPTOS_THROUGHPUT;
|
|
if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)) < 0)
|
|
warn("setsockopt TOS (ignored)");
|
|
#endif
|
|
return (0);
|
|
bad:
|
|
(void) close(data), data = -1;
|
|
if (tmpno)
|
|
sendport = 1;
|
|
return (1);
|
|
}
|
|
|
|
FILE *
|
|
dataconn(lmode)
|
|
char *lmode;
|
|
{
|
|
struct sockaddr_in from;
|
|
int s, fromlen = sizeof (from), tos;
|
|
|
|
if (passivemode)
|
|
return (fdopen(data, lmode));
|
|
|
|
s = accept(data, (struct sockaddr *) &from, &fromlen);
|
|
if (s < 0) {
|
|
warn("accept");
|
|
(void) close(data), data = -1;
|
|
return (NULL);
|
|
}
|
|
(void) close(data);
|
|
data = s;
|
|
#ifdef IP_TOS
|
|
tos = IPTOS_THROUGHPUT;
|
|
if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
|
|
warn("setsockopt TOS (ignored)");
|
|
#endif
|
|
return (fdopen(data, lmode));
|
|
}
|
|
|
|
void
|
|
ptransfer(direction, bytes, t0, t1)
|
|
char *direction;
|
|
long bytes;
|
|
struct timeval *t0, *t1;
|
|
{
|
|
struct timeval td;
|
|
float s, bs;
|
|
|
|
if (verbose) {
|
|
tvsub(&td, t1, t0);
|
|
s = td.tv_sec + (td.tv_usec / 1000000.);
|
|
#define nz(x) ((x) == 0 ? 1 : (x))
|
|
bs = bytes / nz(s);
|
|
if(bs > ( 1024 * 1024 ))
|
|
printf("%ld bytes %s in %.2f seconds (%.2f Meg/s)\n",
|
|
bytes, direction, s, bs / (1024. * 1024.));
|
|
else
|
|
printf("%ld bytes %s in %.2f seconds (%.2f Kbytes/s)\n",
|
|
bytes, direction, s, bs / 1024.);
|
|
}
|
|
}
|
|
|
|
/*
|
|
void
|
|
tvadd(tsum, t0)
|
|
struct timeval *tsum, *t0;
|
|
{
|
|
|
|
tsum->tv_sec += t0->tv_sec;
|
|
tsum->tv_usec += t0->tv_usec;
|
|
if (tsum->tv_usec > 1000000)
|
|
tsum->tv_sec++, tsum->tv_usec -= 1000000;
|
|
}
|
|
*/
|
|
|
|
void
|
|
tvsub(tdiff, t1, t0)
|
|
struct timeval *tdiff, *t1, *t0;
|
|
{
|
|
|
|
tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
|
|
tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
|
|
if (tdiff->tv_usec < 0)
|
|
tdiff->tv_sec--, tdiff->tv_usec += 1000000;
|
|
}
|
|
|
|
void
|
|
psabort()
|
|
{
|
|
|
|
abrtflag++;
|
|
}
|
|
|
|
void
|
|
pswitch(flag)
|
|
int flag;
|
|
{
|
|
sig_t oldintr;
|
|
static struct comvars {
|
|
int connect;
|
|
char name[MAXHOSTNAMELEN];
|
|
struct sockaddr_in mctl;
|
|
struct sockaddr_in hctl;
|
|
FILE *in;
|
|
FILE *out;
|
|
int tpe;
|
|
int curtpe;
|
|
int cpnd;
|
|
int sunqe;
|
|
int runqe;
|
|
int mcse;
|
|
int ntflg;
|
|
char nti[17];
|
|
char nto[17];
|
|
int mapflg;
|
|
char mi[MAXPATHLEN];
|
|
char mo[MAXPATHLEN];
|
|
} proxstruct, tmpstruct;
|
|
struct comvars *ip, *op;
|
|
|
|
abrtflag = 0;
|
|
oldintr = signal(SIGINT, psabort);
|
|
if (flag) {
|
|
if (proxy)
|
|
return;
|
|
ip = &tmpstruct;
|
|
op = &proxstruct;
|
|
proxy++;
|
|
} else {
|
|
if (!proxy)
|
|
return;
|
|
ip = &proxstruct;
|
|
op = &tmpstruct;
|
|
proxy = 0;
|
|
}
|
|
ip->connect = connected;
|
|
connected = op->connect;
|
|
if (hostname) {
|
|
(void) strncpy(ip->name, hostname, sizeof(ip->name) - 1);
|
|
ip->name[strlen(ip->name)] = '\0';
|
|
} else
|
|
ip->name[0] = 0;
|
|
hostname = op->name;
|
|
ip->hctl = hisctladdr;
|
|
hisctladdr = op->hctl;
|
|
ip->mctl = myctladdr;
|
|
myctladdr = op->mctl;
|
|
ip->in = cin;
|
|
cin = op->in;
|
|
ip->out = cout;
|
|
cout = op->out;
|
|
ip->tpe = type;
|
|
type = op->tpe;
|
|
ip->curtpe = curtype;
|
|
curtype = op->curtpe;
|
|
ip->cpnd = cpend;
|
|
cpend = op->cpnd;
|
|
ip->sunqe = sunique;
|
|
sunique = op->sunqe;
|
|
ip->runqe = runique;
|
|
runique = op->runqe;
|
|
ip->mcse = mcase;
|
|
mcase = op->mcse;
|
|
ip->ntflg = ntflag;
|
|
ntflag = op->ntflg;
|
|
(void) strncpy(ip->nti, ntin, 16);
|
|
(ip->nti)[strlen(ip->nti)] = '\0';
|
|
(void) strcpy(ntin, op->nti);
|
|
(void) strncpy(ip->nto, ntout, 16);
|
|
(ip->nto)[strlen(ip->nto)] = '\0';
|
|
(void) strcpy(ntout, op->nto);
|
|
ip->mapflg = mapflag;
|
|
mapflag = op->mapflg;
|
|
(void) strncpy(ip->mi, mapin, MAXPATHLEN - 1);
|
|
(ip->mi)[strlen(ip->mi)] = '\0';
|
|
(void) strcpy(mapin, op->mi);
|
|
(void) strncpy(ip->mo, mapout, MAXPATHLEN - 1);
|
|
(ip->mo)[strlen(ip->mo)] = '\0';
|
|
(void) strcpy(mapout, op->mo);
|
|
(void) signal(SIGINT, oldintr);
|
|
if (abrtflag) {
|
|
abrtflag = 0;
|
|
(*oldintr)(SIGINT);
|
|
}
|
|
}
|
|
|
|
void
|
|
abortpt()
|
|
{
|
|
|
|
printf("\n");
|
|
(void) fflush(stdout);
|
|
ptabflg++;
|
|
mflag = 0;
|
|
abrtflag = 0;
|
|
longjmp(ptabort, 1);
|
|
}
|
|
|
|
void
|
|
proxtrans(cmd, local, remote)
|
|
char *cmd, *local, *remote;
|
|
{
|
|
sig_t oldintr;
|
|
int secndflag = 0, prox_type, nfnd;
|
|
char *cmd2;
|
|
struct fd_set mask;
|
|
|
|
if (strcmp(cmd, "RETR"))
|
|
cmd2 = "RETR";
|
|
else
|
|
cmd2 = runique ? "STOU" : "STOR";
|
|
if ((prox_type = type) == 0) {
|
|
if (unix_server && unix_proxy)
|
|
prox_type = TYPE_I;
|
|
else
|
|
prox_type = TYPE_A;
|
|
}
|
|
if (curtype != prox_type)
|
|
changetype(prox_type, 1);
|
|
if (command("PASV") != COMPLETE) {
|
|
printf("proxy server does not support third party transfers.\n");
|
|
return;
|
|
}
|
|
pswitch(0);
|
|
if (!connected) {
|
|
printf("No primary connection\n");
|
|
pswitch(1);
|
|
code = -1;
|
|
return;
|
|
}
|
|
if (curtype != prox_type)
|
|
changetype(prox_type, 1);
|
|
if (command("PORT %s", pasv) != COMPLETE) {
|
|
pswitch(1);
|
|
return;
|
|
}
|
|
if (setjmp(ptabort))
|
|
goto abort;
|
|
oldintr = signal(SIGINT, abortpt);
|
|
if (command("%s %s", cmd, remote) != PRELIM) {
|
|
(void) signal(SIGINT, oldintr);
|
|
pswitch(1);
|
|
return;
|
|
}
|
|
sleep(2);
|
|
pswitch(1);
|
|
secndflag++;
|
|
if (command("%s %s", cmd2, local) != PRELIM)
|
|
goto abort;
|
|
ptflag++;
|
|
(void) getreply(0);
|
|
pswitch(0);
|
|
(void) getreply(0);
|
|
(void) signal(SIGINT, oldintr);
|
|
pswitch(1);
|
|
ptflag = 0;
|
|
printf("local: %s remote: %s\n", local, remote);
|
|
return;
|
|
abort:
|
|
(void) signal(SIGINT, SIG_IGN);
|
|
ptflag = 0;
|
|
if (strcmp(cmd, "RETR") && !proxy)
|
|
pswitch(1);
|
|
else if (!strcmp(cmd, "RETR") && proxy)
|
|
pswitch(0);
|
|
if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
|
|
if (command("%s %s", cmd2, local) != PRELIM) {
|
|
pswitch(0);
|
|
if (cpend)
|
|
abort_remote((FILE *) NULL);
|
|
}
|
|
pswitch(1);
|
|
if (ptabflg)
|
|
code = -1;
|
|
(void) signal(SIGINT, oldintr);
|
|
return;
|
|
}
|
|
if (cpend)
|
|
abort_remote((FILE *) NULL);
|
|
pswitch(!proxy);
|
|
if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
|
|
if (command("%s %s", cmd2, local) != PRELIM) {
|
|
pswitch(0);
|
|
if (cpend)
|
|
abort_remote((FILE *) NULL);
|
|
pswitch(1);
|
|
if (ptabflg)
|
|
code = -1;
|
|
(void) signal(SIGINT, oldintr);
|
|
return;
|
|
}
|
|
}
|
|
if (cpend)
|
|
abort_remote((FILE *) NULL);
|
|
pswitch(!proxy);
|
|
if (cpend) {
|
|
FD_ZERO(&mask);
|
|
FD_SET(fileno(cin), &mask);
|
|
if ((nfnd = empty(&mask, 10)) <= 0) {
|
|
if (nfnd < 0) {
|
|
warn("abort");
|
|
}
|
|
if (ptabflg)
|
|
code = -1;
|
|
lostpeer();
|
|
}
|
|
(void) getreply(0);
|
|
(void) getreply(0);
|
|
}
|
|
if (proxy)
|
|
pswitch(0);
|
|
pswitch(1);
|
|
if (ptabflg)
|
|
code = -1;
|
|
(void) signal(SIGINT, oldintr);
|
|
}
|
|
|
|
void
|
|
reset(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
struct fd_set mask;
|
|
int nfnd = 1;
|
|
|
|
FD_ZERO(&mask);
|
|
while (nfnd > 0) {
|
|
FD_SET(fileno(cin), &mask);
|
|
if ((nfnd = empty(&mask,0)) < 0) {
|
|
warn("reset");
|
|
code = -1;
|
|
lostpeer();
|
|
}
|
|
else if (nfnd) {
|
|
(void) getreply(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
char *
|
|
gunique(local)
|
|
char *local;
|
|
{
|
|
static char new[MAXPATHLEN];
|
|
char *cp = strrchr(local, '/');
|
|
int d, count=0;
|
|
char ext = '1';
|
|
|
|
if (cp)
|
|
*cp = '\0';
|
|
d = access(cp == local ? "/" : cp ? local : ".", 2);
|
|
if (cp)
|
|
*cp = '/';
|
|
if (d < 0) {
|
|
warn("local: %s", local);
|
|
return ((char *) 0);
|
|
}
|
|
(void) strcpy(new, local);
|
|
cp = new + strlen(new);
|
|
*cp++ = '.';
|
|
while (!d) {
|
|
if (++count == 100) {
|
|
printf("runique: can't find unique file name.\n");
|
|
return ((char *) 0);
|
|
}
|
|
*cp++ = ext;
|
|
*cp = '\0';
|
|
if (ext == '9')
|
|
ext = '0';
|
|
else
|
|
ext++;
|
|
if ((d = access(new, 0)) < 0)
|
|
break;
|
|
if (ext != '0')
|
|
cp--;
|
|
else if (*(cp - 2) == '.')
|
|
*(cp - 1) = '1';
|
|
else {
|
|
*(cp - 2) = *(cp - 2) + 1;
|
|
cp--;
|
|
}
|
|
}
|
|
return (new);
|
|
}
|
|
|
|
void
|
|
abort_remote(din)
|
|
FILE *din;
|
|
{
|
|
char buf[BUFSIZ];
|
|
int nfnd;
|
|
struct fd_set mask;
|
|
|
|
/*
|
|
* send IAC in urgent mode instead of DM because 4.3BSD places oob mark
|
|
* after urgent byte rather than before as is protocol now
|
|
*/
|
|
sprintf(buf, "%c%c%c", IAC, IP, IAC);
|
|
if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
|
|
warn("abort");
|
|
fprintf(cout,"%cABOR\r\n", DM);
|
|
(void) fflush(cout);
|
|
FD_ZERO(&mask);
|
|
FD_SET(fileno(cin), &mask);
|
|
if (din) {
|
|
FD_SET(fileno(din), &mask);
|
|
}
|
|
if ((nfnd = empty(&mask, 10)) <= 0) {
|
|
if (nfnd < 0) {
|
|
warn("abort");
|
|
}
|
|
if (ptabflg)
|
|
code = -1;
|
|
lostpeer();
|
|
}
|
|
if (din && FD_ISSET(fileno(din), &mask)) {
|
|
while (read(fileno(din), buf, BUFSIZ) > 0)
|
|
/* LOOP */;
|
|
}
|
|
if (getreply(0) == ERROR && code == 552) {
|
|
/* 552 needed for nic style abort */
|
|
(void) getreply(0);
|
|
}
|
|
(void) getreply(0);
|
|
}
|