diff options
Diffstat (limited to 'usr.sbin/faithd/rsh.c')
| -rw-r--r-- | usr.sbin/faithd/rsh.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/usr.sbin/faithd/rsh.c b/usr.sbin/faithd/rsh.c deleted file mode 100644 index ab8e623e..0000000 --- a/usr.sbin/faithd/rsh.c +++ /dev/null @@ -1,212 +0,0 @@ -/* $KAME: rsh.c,v 1.7 2001/09/05 01:10:30 itojun Exp $ */ - -/* - * Copyright (C) 1997 and 1998 WIDE Project. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <sys/time.h> - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <syslog.h> -#include <unistd.h> -#include <errno.h> - -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> - -#include "faithd.h" - -char rshbuf[MSS]; - -int s_ctl, s_ctl6, s_rcv, s_snd; -int half; - -void -rsh_relay(int s_src, int s_dst) -{ - ssize_t n; - fd_set readfds; - int error; - struct timeval tv; - - FD_ZERO(&readfds); - FD_SET(s_src, &readfds); - tv.tv_sec = FAITH_TIMEOUT; - tv.tv_usec = 0; - error = select(256, &readfds, NULL, NULL, &tv); - if (error == -1) - exit_failure("select %d: %s", s_src, strerror(errno)); - else if (error == 0) - exit_failure("connection timeout"); - - n = read(s_src, rshbuf, sizeof(rshbuf)); - if (rshbuf[0] != 0) { - rsh_dual_relay(s_src, s_dst); - /* NOTREACHED */ - } - write(s_dst, rshbuf, n); - tcp_relay(s_src, s_dst, "rsh"); - /* NOTREACHED */ -} - -static void -relay(int src, int dst) -{ - int error; - ssize_t n; - int atmark; - - error = ioctl(s_rcv, SIOCATMARK, &atmark); - if (error != -1 && atmark == 1) { - n = read(s_rcv, rshbuf, 1); - if (n == 1) - send(s_snd, rshbuf, 1, MSG_OOB); - return; - } - - n = read(s_rcv, rshbuf, sizeof(rshbuf)); - - switch (n) { - case -1: - exit_failure("%s", strerror(errno)); - case 0: - if (s_rcv == src) { - /* half close */ - shutdown(dst, 1); - half = YES; - break; - } - close(src); - close(dst); - close(s_ctl); - close(s_ctl6); - exit_success("terminating rsh/contorol connections"); - break; - default: - write(s_snd, rshbuf, n); - } -} - -void -rsh_dual_relay(int s_src, int s_dst) -{ - fd_set readfds; - int len, s_wld, error; - struct sockaddr_storage ctladdr6; - struct sockaddr_storage ctladdr; - int port6 = 0, lport, lport6; - char *p; - struct timeval tv; - struct sockaddr *sa; - - half = NO; - s_rcv = s_src; - s_snd = s_dst; - syslog(LOG_INFO, "starting rsh connection"); - - for (p = rshbuf; *p; p++) - port6 = port6 * 10 + *p - '0'; - - len = sizeof(ctladdr6); - getpeername(s_src, (struct sockaddr *)&ctladdr6, &len); - if (((struct sockaddr *)&ctladdr6)->sa_family == AF_INET6) - ((struct sockaddr_in6 *)&ctladdr6)->sin6_port = htons(port6); - else - ((struct sockaddr_in *)&ctladdr6)->sin_port = htons(port6); - - s_wld = rresvport(&lport); - if (s_wld == -1) goto bad; - error = listen(s_wld, 1); - if (error == -1) goto bad; - snprintf(rshbuf, sizeof(rshbuf), "%d", lport); - write(s_dst, rshbuf, strlen(rshbuf)+1); - - len = sizeof(ctladdr); - s_ctl = accept(s_wld, (struct sockaddr *)&ctladdr, &len); - if (s_ctl == -1) goto bad; - close(s_wld); - - sa = (struct sockaddr *)&ctladdr6; - s_ctl6 = rresvport_af(&lport6, sa->sa_family); - if (s_ctl6 == -1) goto bad; - error = connect(s_ctl6, sa, sa->sa_len); - if (error == -1) goto bad; - - syslog(LOG_INFO, "starting rsh control connection"); - - for (;;) { - FD_ZERO(&readfds); - if (half == NO) - FD_SET(s_src, &readfds); - FD_SET(s_dst, &readfds); - FD_SET(s_ctl, &readfds); - FD_SET(s_ctl6, &readfds); - tv.tv_sec = FAITH_TIMEOUT; - tv.tv_usec = 0; - - error = select(256, &readfds, NULL, NULL, &tv); - if (error == -1) - exit_failure("select 4 sockets: %s", strerror(errno)); - else if (error == 0) - exit_failure("connection timeout"); - - if (half == NO && FD_ISSET(s_src, &readfds)) { - s_rcv = s_src; - s_snd = s_dst; - relay(s_src, s_dst); - } - if (FD_ISSET(s_dst, &readfds)) { - s_rcv = s_dst; - s_snd = s_src; - relay(s_src, s_dst); - } - if (FD_ISSET(s_ctl, &readfds)) { - s_rcv = s_ctl; - s_snd = s_ctl6; - relay(s_src, s_dst); - } - if (FD_ISSET(s_ctl6, &readfds)) { - s_rcv = s_ctl6; - s_snd = s_ctl; - relay(s_src, s_dst); - } - } - /* NOTREACHED */ - - bad: - exit_failure("%s", strerror(errno)); -} |
