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Remove rcmds.

Browse Source 
If they are still needed, you can find them in the net/bsdrcmds port.

This was proposed June, 20th and approved by various committers [1].
They have been marked as deprecated on CURRENT in r320644 [2] on July, 4th.
Both stable/11 and release/11.1 contain the deprecation notice (thanks to
allanjude@).

Note that ruptime(1)/rwho(1)/rwhod(8) were initially thought to be part of
rcmds but this was a mistake and those are therefore NOT removed.

[1] https://lists.freebsd.org/pipermail/freebsd-arch/2017-June/018239.html
[2] https://svnweb.freebsd.org/base?view=revision&revision=320644

Reviewed by:	bapt, brooks
Differential Revision:	https://reviews.freebsd.org/D12573
This commit is contained in:
Jeremie Le Hen 2017-10-06 08:43:14 +00:00
parent ac63ac6859
commit e415aa2846
41 changed files with 16 additions and 4637 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
ObsoleteFiles.inc
View File

@ -38,6 +38,18 @@
# xargs -n1 | sort | uniq -d;
# done
# 20171003: remove RCMDS
OLD_FILES+=bin/rcp
OLD_FILES+=rescue/rcp
OLD_FILES+=usr/bin/rlogin
OLD_FILES+=usr/bin/rsh
OLD_FILES+=usr/libexec/rlogind
OLD_FILES+=usr/libexec/rshd
OLD_FILES+=usr/share/man/man1/rcp.1.gz
OLD_FILES+=usr/share/man/man1/rlogin.1.gz
OLD_FILES+=usr/share/man/man1/rsh.1.gz
OLD_FILES+=usr/share/man/man8/rlogind.8.gz
OLD_FILES+=usr/share/man/man8/rshd.8.gz
# 20170927: crshared
OLD_FILES+=usr/share/man/man9/crshared.9.gz
# 20170927: procctl

1
bin/Makefile
View File

@ -40,7 +40,6 @@ SUBDIR= cat \
test \
uuidgen
SUBDIR.${MK_RCMDS}+= rcp
SUBDIR.${MK_SENDMAIL}+= rmail
SUBDIR.${MK_TCSH}+= csh
SUBDIR.${MK_TESTS}+= tests

19
bin/rcp/Makefile
View File

@ -1,19 +0,0 @@
# @(#)Makefile 8.1 (Berkeley) 7/19/93
# $FreeBSD$
.include <src.opts.mk>
PACKAGE=rcmds
PROG= rcp
SRCS= rcp.c util.c
CFLAGS+=-DBINDIR=${BINDIR}
PACKAGE=rcmds
BINOWN= root
BINMODE=4555
HAS_TESTS=
SUBDIR.${MK_TESTS}+= tests
.include <bsd.prog.mk>

18
bin/rcp/Makefile.depend
View File

@ -1,18 +0,0 @@
# $FreeBSD$
# Autogenerated - do NOT edit!
DIRDEPS = \
gnu/lib/csu \
gnu/lib/libgcc \
include \
include/xlocale \
lib/${CSU_DIR} \
lib/libc \
lib/libcompiler_rt \
.include <dirdeps.mk>
.if ${DEP_RELDIR} == ${_DEP_RELDIR}
# local dependencies - needed for -jN in clean tree
.endif

47
bin/rcp/extern.h
View File

@ -1,47 +0,0 @@
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
*
* @(#)extern.h 8.1 (Berkeley) 5/31/93
* $FreeBSD$
*/
typedef struct {
size_t cnt;
char *buf;
} BUF;
extern int iamremote;
BUF *allocbuf(BUF *, int, int);
char *colon(char *);
void lostconn(int);
void nospace(void);
int okname(char *);
void run_err(const char *, ...) __printflike(1, 2);
int susystem(char *, int);
void verifydir(char *);

160
bin/rcp/rcp.1
View File

@ -1,160 +0,0 @@
.\"-
.\" Copyright (c) 1983, 1990, 1993
.\" The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
.\"
.\" @(#)rcp.1 8.1 (Berkeley) 5/31/93
.\" $FreeBSD$
.\"
.Dd July 3, 2017
.Dt RCP 1
.Os
.Sh NAME
.Nm rcp
.Nd remote file copy
.Sh SYNOPSIS
.Nm
.Op Fl 46p
.Ar file1 file2
.Nm
.Op Fl 46pr
.Ar
.Ar directory
.Sh DEPRECATION NOTICE
.Nm
is deprecated and will be removed from future versions of the
.Fx
base system.
If
.Nm
is still required, it can be installed from ports or packages
(net/bsdrcmds).
.Sh DESCRIPTION
The
.Nm
utility copies files between machines.
Each
.Ar file
or
.Ar directory
argument is either a remote file name of the
form
.Dq ruser@rhost:path ,
or a local file name (containing no
.Ql :\&
characters,
or a
.Ql /
before any
.Ql :\& Ns
s).
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl 4
Use IPv4 addresses only.
.It Fl 6
Use IPv6 addresses only.
.It Fl p
Cause
.Nm
to attempt to preserve (duplicate) in its copies the modification
times and modes of the source files, ignoring the
.Xr umask 2 .
By default, the mode and owner of
.Ar file2
are preserved if it already existed; otherwise the mode of the source file
modified by the
.Xr umask 2
on the destination host is used.
.It Fl r
If any of the source files are directories,
.Nm
copies each subtree rooted at that name; in this case
the destination must be a directory.
.El
.Pp
If
.Ar path
is not a full path name, it is interpreted relative to
the login directory of the specified user
.Ar ruser
on
.Ar rhost ,
or your current user name if no other remote user name is specified.
A
.Ar path
on a remote host may be quoted (using
.Ql \e ,
.Ql \&" ,
or
.Ql \(aa )
so that the metacharacters are interpreted remotely.
.Pp
The
.Nm
utility does not prompt for passwords; it performs remote execution
via
.Xr rsh 1 ,
and requires the same authorization.
.Pp
The
.Nm
utility handles third party copies, where neither source nor target files
are on the current machine.
.Sh SEE ALSO
.Xr cp 1 ,
.Xr ftp 1 ,
.Xr rlogin 1 ,
.Xr rsh 1 ,
.Xr hosts.equiv 5
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.2 .
The version of
.Nm
described here
has been reimplemented with Kerberos in
.Bx 4.3 Reno .
.Sh BUGS
Does not detect all cases where the target of a copy might
be a file in cases where only a directory should be legal.
.Pp
Is confused by any output generated by commands in a
.Pa .login ,
.Pa .profile ,
or
.Pa .cshrc
file on the remote host.
.Pp
The destination user and hostname may have to be specified as
.Dq rhost.ruser
when the destination machine is running the
.Bx 4.2
version of
.Nm .

791
bin/rcp/rcp.c
View File

@ -1,791 +0,0 @@
/*-
* Copyright (c) 1983, 1990, 1992, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* Portions of this software were developed for the FreeBSD Project by
* ThinkSec AS and NAI Labs, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
* ("CBOSS"), as part of the DARPA CHATS research program.
*
* 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 University 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 REGENTS 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 REGENTS 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.
*/
#if 0
#ifndef lint
static char const copyright[] =
"@(#) Copyright (c) 1983, 1990, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)rcp.c 8.2 (Berkeley) 4/2/94";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <ctype.h>
#include <dirent.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <netdb.h>
#include <paths.h>
#include <pwd.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
#define OPTIONS "46dfprt"
static struct passwd *pwd;
static u_short port;
static uid_t userid;
static int errs, rem;
int iamremote;
static int pflag, iamrecursive, targetshouldbedirectory;
static int family = PF_UNSPEC;
static int argc_copy;
static const char **argv_copy;
static char period[] = ".";
#define CMDNEEDS 64
static char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
int response(void);
void rsource(char *, struct stat *);
void sink(int, char *[]);
void source(int, char *[]);
void tolocal(int, char *[]);
void toremote(char *, int, char *[]);
void usage(void);
int
main(int argc, char *argv[])
{
struct servent *sp;
int ch, fflag, i, tflag;
char *targ;
/*
* Prepare for execing ourselves.
*/
argc_copy = argc + 1;
argv_copy = malloc((argc_copy + 1) * sizeof(*argv_copy));
if (argv_copy == NULL)
err(1, "malloc");
argv_copy[0] = argv[0];
argv_copy[1] = "-K";
for (i = 1; i < argc; ++i) {
argv_copy[i + 1] = strdup(argv[i]);
if (argv_copy[i + 1] == NULL)
errx(1, "strdup: out of memory");
}
argv_copy[argc + 1] = NULL;
fflag = tflag = 0;
while ((ch = getopt(argc, argv, OPTIONS)) != -1)
switch(ch) { /* User-visible flags. */
case '4':
family = PF_INET;
break;
case '6':
family = PF_INET6;
break;
case 'p':
pflag = 1;
break;
case 'r':
iamrecursive = 1;
break;
/* Server options. */
case 'd':
targetshouldbedirectory = 1;
break;
case 'f': /* "from" */
iamremote = 1;
fflag = 1;
break;
case 't': /* "to" */
iamremote = 1;
tflag = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
sp = getservbyname("shell", "tcp");
if (sp == NULL)
errx(1, "shell/tcp: unknown service");
port = sp->s_port;
if ((pwd = getpwuid(userid = getuid())) == NULL)
errx(1, "unknown user %d", (int)userid);
rem = STDIN_FILENO; /* XXX */
if (fflag) { /* Follow "protocol", send data. */
(void)response();
(void)setuid(userid);
source(argc, argv);
exit(errs);
}
if (tflag) { /* Receive data. */
(void)setuid(userid);
sink(argc, argv);
exit(errs);
}
if (argc < 2)
usage();
if (argc > 2)
targetshouldbedirectory = 1;
rem = -1;
/* Command to be executed on remote system using "rsh". */
(void)snprintf(cmd, sizeof(cmd), "rcp%s%s%s",
iamrecursive ? " -r" : "", pflag ? " -p" : "",
targetshouldbedirectory ? " -d" : "");
(void)signal(SIGPIPE, lostconn);
if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
toremote(targ, argc, argv);
else {
tolocal(argc, argv); /* Dest is local host. */
if (targetshouldbedirectory)
verifydir(argv[argc - 1]);
}
exit(errs);
}
void
toremote(char *targ, int argc, char *argv[])
{
int i, tos;
char *bp, *host, *src, *suser, *thost, *tuser;
*targ++ = 0;
if (*targ == 0)
targ = period;
if ((thost = strchr(argv[argc - 1], '@'))) {
/* user@host */
*thost++ = 0;
tuser = argv[argc - 1];
if (*tuser == '\0')
tuser = NULL;
else if (!okname(tuser))
exit(1);
} else {
thost = argv[argc - 1];
tuser = NULL;
}
for (i = 0; i < argc - 1; i++) {
src = colon(argv[i]);
if (src) { /* remote to remote */
*src++ = 0;
if (*src == 0)
src = period;
host = strchr(argv[i], '@');
if (host) {
*host++ = 0;
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
else if (!okname(suser)) {
++errs;
continue;
}
if (asprintf(&bp,
"%s %s -l %s -n %s %s '%s%s%s:%s'",
_PATH_RSH, host, suser, cmd, src,
tuser ? tuser : "", tuser ? "@" : "",
thost, targ) == -1)
err(1, "asprintf");
} else
if (asprintf(&bp,
"exec %s %s -n %s %s '%s%s%s:%s'",
_PATH_RSH, argv[i], cmd, src,
tuser ? tuser : "", tuser ? "@" : "",
thost, targ) == -1)
err(1, "asprintf");
(void)susystem(bp, userid);
(void)free(bp);
} else { /* local to remote */
if (rem == -1) {
if (asprintf(&bp, "%s -t %s", cmd, targ)
== -1)
err(1, "asprintf");
host = thost;
rem = rcmd_af(&host, port,
pwd->pw_name,
tuser ? tuser : pwd->pw_name,
bp, 0, family);
if (rem < 0)
exit(1);
if (family == PF_INET) {
tos = IPTOS_THROUGHPUT;
if (setsockopt(rem, IPPROTO_IP, IP_TOS,
&tos, sizeof(int)) < 0)
warn("TOS (ignored)");
}
if (response() < 0)
exit(1);
(void)free(bp);
(void)setuid(userid);
}
source(1, argv+i);
}
}
}
void
tolocal(int argc, char *argv[])
{
int i, len, tos;
char *bp, *host, *src, *suser;
for (i = 0; i < argc - 1; i++) {
if (!(src = colon(argv[i]))) { /* Local to local. */
len = strlen(_PATH_CP) + strlen(argv[i]) +
strlen(argv[argc - 1]) + 20;
if (!(bp = malloc(len)))
err(1, "malloc");
(void)snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
iamrecursive ? " -PR" : "", pflag ? " -p" : "",
argv[i], argv[argc - 1]);
if (susystem(bp, userid))
++errs;
(void)free(bp);
continue;
}
*src++ = 0;
if (*src == 0)
src = period;
if ((host = strchr(argv[i], '@')) == NULL) {
host = argv[i];
suser = pwd->pw_name;
} else {
*host++ = 0;
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
else if (!okname(suser)) {
++errs;
continue;
}
}
len = strlen(src) + CMDNEEDS + 20;
if ((bp = malloc(len)) == NULL)
err(1, "malloc");
(void)snprintf(bp, len, "%s -f %s", cmd, src);
rem = rcmd_af(&host, port, pwd->pw_name, suser, bp, 0,
family);
(void)free(bp);
if (rem < 0) {
++errs;
continue;
}
(void)seteuid(userid);
if (family == PF_INET) {
tos = IPTOS_THROUGHPUT;
if (setsockopt(rem, IPPROTO_IP, IP_TOS, &tos,
sizeof(int)) < 0)
warn("TOS (ignored)");
}
sink(1, argv + argc - 1);
(void)seteuid(0);
(void)close(rem);
rem = -1;
}
}
void
source(int argc, char *argv[])
{
struct stat stb;
static BUF buffer;
BUF *bp;
off_t i;
int amt, fd, haderr, indx, result;
char *last, *name, buf[BUFSIZ];
for (indx = 0; indx < argc; ++indx) {
name = argv[indx];
if ((fd = open(name, O_RDONLY, 0)) < 0)
goto syserr;
if (fstat(fd, &stb)) {
syserr: run_err("%s: %s", name, strerror(errno));
goto next;
}
switch (stb.st_mode & S_IFMT) {
case S_IFREG:
break;
case S_IFDIR:
if (iamrecursive) {
rsource(name, &stb);
goto next;
}
/* FALLTHROUGH */
default:
run_err("%s: not a regular file", name);
goto next;
}
if ((last = strrchr(name, '/')) == NULL)
last = name;
else
++last;
if (pflag) {
/*
* Make it compatible with possible future
* versions expecting microseconds.
*/
(void)snprintf(buf, sizeof(buf), "T%ld 0 %ld 0\n",
(long)stb.st_mtim.tv_sec,
(long)stb.st_atim.tv_sec);
(void)write(rem, buf, strlen(buf));
if (response() < 0)
goto next;
}
#define MODEMASK (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
(void)snprintf(buf, sizeof(buf), "C%04o %jd %s\n",
stb.st_mode & MODEMASK, (intmax_t)stb.st_size, last);
(void)write(rem, buf, strlen(buf));
if (response() < 0)
goto next;
if ((bp = allocbuf(&buffer, fd, BUFSIZ)) == NULL) {
next: if (fd >= 0)
(void)close(fd);
continue;
}
/* Keep writing after an error so that we stay sync'd up. */
for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
amt = bp->cnt;
if (i + amt > stb.st_size)
amt = stb.st_size - i;
if (!haderr) {
result = read(fd, bp->buf, amt);
if (result != amt)
haderr = result >= 0 ? EIO : errno;
}
if (haderr)
(void)write(rem, bp->buf, amt);
else {
result = write(rem, bp->buf, amt);
if (result != amt)
haderr = result >= 0 ? EIO : errno;
}
}
if (close(fd) && !haderr)
haderr = errno;
if (!haderr)
(void)write(rem, "", 1);
else
run_err("%s: %s", name, strerror(haderr));
(void)response();
}
}
void
rsource(char *name, struct stat *statp)
{
DIR *dirp;
struct dirent *dp;
char *last, *vect[1], path[PATH_MAX];
if (!(dirp = opendir(name))) {
run_err("%s: %s", name, strerror(errno));
return;
}
last = strrchr(name, '/');
if (last == NULL)
last = name;
else
last++;
if (pflag) {
(void)snprintf(path, sizeof(path), "T%ld 0 %ld 0\n",
(long)statp->st_mtim.tv_sec,
(long)statp->st_atim.tv_sec);
(void)write(rem, path, strlen(path));
if (response() < 0) {
closedir(dirp);
return;
}
}
(void)snprintf(path, sizeof(path),
"D%04o %d %s\n", statp->st_mode & MODEMASK, 0, last);
(void)write(rem, path, strlen(path));
if (response() < 0) {
closedir(dirp);
return;
}
while ((dp = readdir(dirp))) {
if (dp->d_ino == 0)
continue;
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path)) {
run_err("%s/%s: name too long", name, dp->d_name);
continue;
}
(void)snprintf(path, sizeof(path), "%s/%s", name, dp->d_name);
vect[0] = path;
source(1, vect);
}
(void)closedir(dirp);
(void)write(rem, "E\n", 2);
(void)response();
}
void
sink(int argc, char *argv[])
{
static BUF buffer;
struct stat stb;
struct timeval tv[2];
enum { YES, NO, DISPLAYED } wrerr;
BUF *bp;
off_t i, j, size;
int amt, exists, first, mask, mode, ofd, omode;
size_t count;
int setimes, targisdir, wrerrno = 0;
char ch, *cp, *np, *targ, *vect[1], buf[BUFSIZ], path[PATH_MAX];
const char *why;
#define atime tv[0]
#define mtime tv[1]
#define SCREWUP(str) { why = str; goto screwup; }
setimes = targisdir = 0;
mask = umask(0);
if (!pflag)
(void)umask(mask);
if (argc != 1) {
run_err("ambiguous target");
exit(1);
}
targ = *argv;
if (targetshouldbedirectory)
verifydir(targ);
(void)write(rem, "", 1);
if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
targisdir = 1;
for (first = 1;; first = 0) {
cp = buf;
if (read(rem, cp, 1) <= 0)
return;
if (*cp++ == '\n')
SCREWUP("unexpected <newline>");
do {
if (read(rem, &ch, sizeof(ch)) != sizeof(ch))
SCREWUP("lost connection");
*cp++ = ch;
} while (cp < &buf[BUFSIZ - 1] && ch != '\n');
*cp = 0;
if (buf[0] == '\01' || buf[0] == '\02') {
if (iamremote == 0)
(void)write(STDERR_FILENO,
buf + 1, strlen(buf + 1));
if (buf[0] == '\02')
exit(1);
++errs;
continue;
}
if (buf[0] == 'E') {
(void)write(rem, "", 1);
return;
}
if (ch == '\n')
*--cp = 0;
cp = buf;
if (*cp == 'T') {
setimes++;
cp++;
mtime.tv_sec = strtol(cp, &cp, 10);
if (!cp || *cp++ != ' ')
SCREWUP("mtime.sec not delimited");
mtime.tv_usec = strtol(cp, &cp, 10);
if (!cp || *cp++ != ' ')
SCREWUP("mtime.usec not delimited");
atime.tv_sec = strtol(cp, &cp, 10);
if (!cp || *cp++ != ' ')
SCREWUP("atime.sec not delimited");
atime.tv_usec = strtol(cp, &cp, 10);
if (!cp || *cp++ != '\0')
SCREWUP("atime.usec not delimited");
(void)write(rem, "", 1);
continue;
}
if (*cp != 'C' && *cp != 'D') {
/*
* Check for the case "rcp remote:foo\* local:bar".
* In this case, the line "No match." can be returned
* by the shell before the rcp command on the remote is
* executed so the ^Aerror_message convention isn't
* followed.
*/
if (first) {
run_err("%s", cp);
exit(1);
}
SCREWUP("expected control record");
}
mode = 0;
for (++cp; cp < buf + 5; cp++) {
if (*cp < '0' || *cp > '7')
SCREWUP("bad mode");
mode = (mode << 3) | (*cp - '0');
}
if (*cp++ != ' ')
SCREWUP("mode not delimited");
for (size = 0; isdigit(*cp);)
size = size * 10 + (*cp++ - '0');
if (*cp++ != ' ')
SCREWUP("size not delimited");
if (targisdir) {
if (strlen(targ) + (*targ ? 1 : 0) + strlen(cp)
>= sizeof(path)) {
run_err("%s%s%s: name too long", targ,
*targ ? "/" : "", cp);
exit(1);
}
(void)snprintf(path, sizeof(path), "%s%s%s", targ,
*targ ? "/" : "", cp);
np = path;
} else
np = targ;
exists = stat(np, &stb) == 0;
if (buf[0] == 'D') {
int mod_flag = pflag;
if (exists) {
if (!S_ISDIR(stb.st_mode)) {
errno = ENOTDIR;
goto bad;
}
if (pflag)
(void)chmod(np, mode);
} else {
/* Handle copying from a read-only directory */
mod_flag = 1;
if (mkdir(np, mode | S_IRWXU) < 0)
goto bad;
}
vect[0] = np;
sink(1, vect);
if (setimes) {
setimes = 0;
if (utimes(np, tv) < 0)
run_err("%s: set times: %s",
np, strerror(errno));
}
if (mod_flag)
(void)chmod(np, mode);
continue;
}
omode = mode;
mode |= S_IWRITE;
if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
bad: run_err("%s: %s", np, strerror(errno));
continue;
}
(void)write(rem, "", 1);
if ((bp = allocbuf(&buffer, ofd, BUFSIZ)) == NULL) {
(void)close(ofd);
continue;
}
cp = bp->buf;
wrerr = NO;
for (count = i = 0; i < size; i += BUFSIZ) {
amt = BUFSIZ;
if (i + amt > size)
amt = size - i;
count += amt;
do {
j = read(rem, cp, amt);
if (j <= 0) {
run_err("%s", j ? strerror(errno) :
"dropped connection");
exit(1);
}
amt -= j;
cp += j;
} while (amt > 0);
if (count == bp->cnt) {
/* Keep reading so we stay sync'd up. */
if (wrerr == NO) {
j = write(ofd, bp->buf, count);
if (j != (off_t)count) {
wrerr = YES;
wrerrno = j >= 0 ? EIO : errno;
}
}
count = 0;
cp = bp->buf;
}
}
if (count != 0 && wrerr == NO &&
(j = write(ofd, bp->buf, count)) != (off_t)count) {
wrerr = YES;
wrerrno = j >= 0 ? EIO : errno;
}
if (ftruncate(ofd, size)) {
run_err("%s: truncate: %s", np, strerror(errno));
wrerr = DISPLAYED;
}
if (pflag) {
if (exists || omode != mode)
if (fchmod(ofd, omode))
run_err("%s: set mode: %s",
np, strerror(errno));
} else {
if (!exists && omode != mode)
if (fchmod(ofd, omode & ~mask))
run_err("%s: set mode: %s",
np, strerror(errno));
}
(void)close(ofd);
(void)response();
if (setimes && wrerr == NO) {
setimes = 0;
if (utimes(np, tv) < 0) {
run_err("%s: set times: %s",
np, strerror(errno));
wrerr = DISPLAYED;
}
}
switch(wrerr) {
case YES:
run_err("%s: %s", np, strerror(wrerrno));
break;
case NO:
(void)write(rem, "", 1);
break;
case DISPLAYED:
break;
}
}
screwup:
run_err("protocol error: %s", why);
exit(1);
}
int
response(void)
{
char ch, *cp, resp, rbuf[BUFSIZ];
if (read(rem, &resp, sizeof(resp)) != sizeof(resp))
lostconn(0);
cp = rbuf;
switch(resp) {
case 0: /* ok */
return (0);
default:
*cp++ = resp;
/* FALLTHROUGH */
case 1: /* error, followed by error msg */
case 2: /* fatal error, "" */
do {
if (read(rem, &ch, sizeof(ch)) != sizeof(ch))
lostconn(0);
*cp++ = ch;
} while (cp < &rbuf[BUFSIZ] && ch != '\n');
if (!iamremote)
(void)write(STDERR_FILENO, rbuf, cp - rbuf);
++errs;
if (resp == 1)
return (-1);
exit(1);
}
/* NOTREACHED */
}
void
usage(void)
{
(void)fprintf(stderr, "%s\n%s\n",
"usage: rcp [-46p] file1 file2",
" rcp [-46pr] file ... directory");
exit(1);
}
#include <stdarg.h>
void
run_err(const char *fmt, ...)
{
static FILE *fp;
va_list ap;
++errs;
if (fp == NULL && !(fp = fdopen(rem, "w")))
return;
(void)fprintf(fp, "%c", 0x01);
(void)fprintf(fp, "rcp: ");
va_start(ap, fmt);
(void)vfprintf(fp, fmt, ap);
va_end(ap);
(void)fprintf(fp, "\n");
(void)fflush(fp);
if (!iamremote) {
va_start(ap, fmt);
vwarnx(fmt, ap);
va_end(ap);
}
}

5
bin/rcp/tests/Makefile
View File

@ -1,5 +0,0 @@
# $FreeBSD$
ATF_TESTS_SH+= rcp_test
.include <bsd.test.mk>

60
bin/rcp/tests/rcp_test.sh
View File

@ -1,60 +0,0 @@
#
# Copyright 2017 Shivansh Rai
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
#
# $FreeBSD$
#
usage_output='usage: rcp'
atf_test_case invalid_usage
invalid_usage_head()
{
atf_set "descr" "Verify that an invalid usage with a supported option produces a valid error message"
}
invalid_usage_body()
{
atf_check -s not-exit:0 -e match:"$usage_output" rcp -4
atf_check -s not-exit:0 -e match:"$usage_output" rcp -6
atf_check -s not-exit:0 -e match:"$usage_output" rcp -p
atf_check -s not-exit:0 -e match:"$usage_output" rcp -r
}
atf_test_case no_arguments
no_arguments_head()
{
atf_set "descr" "Verify that rcp(1) fails and generates a valid usage message when no arguments are supplied"
}
no_arguments_body()
{
atf_check -s not-exit:0 -e match:"$usage_output" rcp
}
atf_init_test_cases()
{
atf_add_test_case invalid_usage
atf_add_test_case no_arguments
}

159
bin/rcp/util.c
View File

@ -1,159 +0,0 @@
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
*/
#ifndef lint
#if 0
static const char sccsid[] = "@(#)util.c 8.2 (Berkeley) 4/2/94";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <paths.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "extern.h"
char *
colon(char *cp)
{
if (*cp == ':') /* Leading colon is part of file name. */
return (0);
for (; *cp; ++cp) {
if (*cp == ':')
return (cp);
if (*cp == '/')
return (0);
}
return (0);
}
void
verifydir(char *cp)
{
struct stat stb;
if (!stat(cp, &stb)) {
if (S_ISDIR(stb.st_mode))
return;
errno = ENOTDIR;
}
run_err("%s: %s", cp, strerror(errno));
exit(1);
}
int
okname(char *cp0)
{
int c;
char *cp;
cp = cp0;
do {
c = *cp;
if (c & 0200)
goto bad;
if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
goto bad;
} while (*++cp);
return (1);
bad: warnx("%s: invalid user name", cp0);
return (0);
}
int
susystem(char *s, int userid)
{
sig_t istat, qstat;
int status;
pid_t pid;
pid = vfork();
switch (pid) {
case -1:
return (127);
case 0:
(void)setuid(userid);
execl(_PATH_BSHELL, "sh", "-c", s, (char *)NULL);
_exit(127);
}
istat = signal(SIGINT, SIG_IGN);
qstat = signal(SIGQUIT, SIG_IGN);
if (waitpid(pid, &status, 0) < 0)
status = -1;
(void)signal(SIGINT, istat);
(void)signal(SIGQUIT, qstat);
return (status);
}
BUF *
allocbuf(BUF *bp, int fd, int blksize)
{
struct stat stb;
size_t size;
if (fstat(fd, &stb) < 0) {
run_err("fstat: %s", strerror(errno));
return (0);
}
size = roundup(stb.st_blksize, blksize);
if (size == 0)
size = blksize;
if (bp->cnt >= size)
return (bp);
if ((bp->buf = realloc(bp->buf, size)) == NULL) {
bp->cnt = 0;
run_err("%s", strerror(errno));
return (0);
}
bp->cnt = size;
return (bp);
}
void
lostconn(int signo __unused)
{
if (!iamremote)
warnx("lost connection");
exit(1);
}

8
etc/inetd.conf
View File

@ -12,10 +12,10 @@
#ssh stream tcp6 nowait root /usr/sbin/sshd sshd -i -6
#telnet stream tcp nowait root /usr/libexec/telnetd telnetd
#telnet stream tcp6 nowait root /usr/libexec/telnetd telnetd
#shell stream tcp nowait root /usr/libexec/rshd rshd
#shell stream tcp6 nowait root /usr/libexec/rshd rshd
#login stream tcp nowait root /usr/libexec/rlogind rlogind
#login stream tcp6 nowait root /usr/libexec/rlogind rlogind
#shell stream tcp nowait root /usr/local/sbin/rshd rshd
#shell stream tcp6 nowait root /usr/local/sbin/rshd rshd
#login stream tcp nowait root /usr/local/sbin/rlogind rlogind
#login stream tcp6 nowait root /usr/local/sbin/rlogind rlogind
#finger stream tcp nowait/3/10 nobody /usr/libexec/fingerd fingerd -k -s
#finger stream tcp6 nowait/3/10 nobody /usr/libexec/fingerd fingerd -k -s
#

2
etc/mtree/BSD.tests.dist
View File

@ -34,8 +34,6 @@
..
pwait
..
rcp
..
rmdir
..
sh

8
etc/pam.d/Makefile
View File

@ -35,14 +35,6 @@ FTPMODE= ${FILESMODE}
LINKS= ${FILESDIR}/ftpd ${FILESDIR}/ftp
.endif
.if ${MK_RCMDS} != "no"
FILESGROUPS+= RCMDS
RCMDS+= rsh
RCMDSPACKAGE+= rcmds
RCMDSDIR= ${FILESDIR}
RCMDSMODE= ${FILESMODE}
.endif
.if ${MK_TELNET} != "no"
FILESGROUPS+= TELNET
TELNET+= telnetd

18
etc/pam.d/rsh
View File

@ -1,18 +0,0 @@
#
# $FreeBSD$
#
# PAM configuration for the "rsh" service
#
# auth
auth required pam_rhosts.so no_warn
# account
account required pam_nologin.so
account required pam_unix.so
# session
session required pam_permit.so
# password
password required pam_deny.so

5
libexec/Makefile
View File

@ -79,11 +79,6 @@ _rtld-elf= rtld-elf
SUBDIR+= rbootd
.endif
.if ${MK_RCMDS} != "no"
_rlogind= rlogind
_rshd= rshd
.endif
.if ${MK_SENDMAIL} != "no"
_mail.local= mail.local
_smrsh= smrsh

23
libexec/rlogind/Makefile
View File

@ -1,23 +0,0 @@
# @(#)Makefile 8.1 (Berkeley) 6/4/93
# $FreeBSD$
.include <src.opts.mk>
PACKAGE=rcmds
PROG= rlogind
MAN= rlogind.8
PACKAGE=rcmds
LIBADD= util
WARNS?= 2
.if ${MK_INET6_SUPPORT} != "no"
CFLAGS+= -DINET6
.endif
.if ${MK_BLACKLIST_SUPPORT} != "no"
CFLAGS+= -DUSE_BLACKLIST -I${SRCTOP}/contrib/blacklist/include
LIBADD+= blacklist
LDFLAGS+=-L${LIBBLACKLISTDIR}
.endif
.include <bsd.prog.mk>

22
libexec/rlogind/Makefile.depend
View File

@ -1,22 +0,0 @@
# $FreeBSD$
# Autogenerated - do NOT edit!
DIRDEPS = \
gnu/lib/csu \
gnu/lib/libgcc \
include \
include/arpa \
include/xlocale \
lib/${CSU_DIR} \
lib/libblacklist \
lib/libc \
lib/libcompiler_rt \
lib/libthr \
lib/libutil \
.include <dirdeps.mk>
.if ${DEP_RELDIR} == ${_DEP_RELDIR}
# local dependencies - needed for -jN in clean tree
.endif

202
libexec/rlogind/rlogind.8
View File

@ -1,202 +0,0 @@
.\" Copyright (c) 1983, 1989, 1991, 1993
.\" The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
.\"
.\" @(#)rlogind.8 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd July 3, 2017
.Dt RLOGIND 8
.Os
.Sh NAME
.Nm rlogind
.Nd remote login server
.Sh SYNOPSIS
.Nm
.Op Fl Daln
.Sh DEPRECATION NOTICE
.Nm
is deprecated and will be removed from future versions of the
.Fx
base system.
If
.Nm
is still required, it can be installed from ports or packages
(net/bsdrcmds).
.Sh DESCRIPTION
The
.Nm
utility is the server for the
.Xr rlogin 1
program.
The server provides a remote login facility
with authentication based on privileged port numbers from trusted hosts.
.Pp
Options supported by
.Nm :
.Bl -tag -width indent
.It Fl D
Set TCP_NODELAY socket option.
This improves responsiveness at the expense of
some additional network traffic.
.It Fl a
Ask hostname for verification.
.It Fl l
Prevent any authentication based on the user's
.Dq Pa .rhosts
file, unless the user is logging in as the superuser.
.It Fl n
Disable keep-alive messages.
.El
.Pp
The
.Nm
utility listens for service requests at the port indicated in
the
.Dq login
service specification; see
.Xr services 5 .
When a service request is received the following protocol
is initiated:
.Bl -enum
.It
The server checks the client's source port.
If the port is not in the range 512-1023, the server
aborts the connection.
.It
The server checks the client's source address
and requests the corresponding host name (see
.Xr gethostbyaddr 3 ,
.Xr hosts 5
and
.Xr named 8 ) .
If the hostname cannot be determined,
the dot-notation representation of the host address is used.
If the hostname is in the same domain as the server (according to
the last two components of the domain name),
or if the
.Fl a
option is given,
the addresses for the hostname are requested,
verifying that the name and address correspond.
Normal authentication is bypassed if the address verification fails.
.El
.Pp
Once the source port and address have been checked,
.Nm
proceeds with the authentication process described in
.Xr rshd 8 .
It then allocates a pseudo terminal (see
.Xr pty 4 ) ,
and manipulates file descriptors so that the slave
half of the pseudo terminal becomes the
.Em stdin ,
.Em stdout ,
and
.Em stderr
for a login process.
The login process is an instance of the
.Xr login 1
program, invoked with the
.Fl f
option if authentication has succeeded.
If automatic authentication fails, the user is
prompted to log in as if on a standard terminal line.
.Pp
The parent of the login process manipulates the master side of
the pseudo terminal, operating as an intermediary
between the login process and the client instance of the
.Xr rlogin 1
program.
In normal operation, the packet protocol described
in
.Xr pty 4
is invoked to provide
.Ql ^S/^Q
type facilities and propagate
interrupt signals to the remote programs.
The login process
propagates the client terminal's baud rate and terminal type,
as found in the environment variable,
.Ev TERM ;
see
.Xr environ 7 .
The screen or window size of the terminal is requested from the client,
and window size changes from the client are propagated to the pseudo terminal.
.Pp
Transport-level keepalive messages are enabled unless the
.Fl n
option is present.
The use of keepalive messages allows sessions to be timed out
if the client crashes or becomes unreachable.
.Sh FILES
.Bl -tag -width /etc/hostsxxxxxxxx -compact
.It Pa /etc/hosts
.It Pa /etc/hosts.equiv
.It Ev $HOME Ns Pa /.rhosts
.It Pa /var/run/nologin
.El
.Sh DIAGNOSTICS
All initial diagnostic messages are indicated
by a leading byte with a value of 1,
after which any network connections are closed.
If there are no errors before
.Xr login 1
is invoked, a null byte is returned as in indication of success.
.Bl -tag -width Ds
.It Sy Try again.
A
.Xr fork 2
by the server failed.
.El
.Sh SEE ALSO
.Xr login 1 ,
.Xr ruserok 3 ,
.Xr hosts 5 ,
.Xr hosts.equiv 5 ,
.Xr login.conf 5 ,
.Xr nologin 5 ,
.Xr services 5 ,
.Xr rshd 8
.Sh HISTORY
The
.Nm
utility appeared in
.Bx 4.2 .
.Pp
IPv6 support was added by WIDE/KAME project.
.Sh BUGS
The authentication procedure used here assumes the integrity
of each client machine and the connecting medium.
This is
insecure, but is useful in an
.Dq open
environment.
.Pp
A facility to allow all data exchanges to be encrypted should be
present.
.Pp
A more extensible protocol should be used.

583
libexec/rlogind/rlogind.c
View File

@ -1,583 +0,0 @@
/*-
* Copyright (c) 1983, 1988, 1989, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* Portions of this software were developed for the FreeBSD Project by
* ThinkSec AS and NAI Labs, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
* ("CBOSS"), as part of the DARPA CHATS research program.
*
* 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 University 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 REGENTS 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 REGENTS 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.
*/
#if 0
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1983, 1988, 1989, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static const char sccsid[] = "@(#)rlogind.c 8.1 (Berkeley) 6/4/93";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* remote login server:
* \0
* remuser\0
* locuser\0
* terminal_type/speed\0
* data
*/
#define FD_SETSIZE 16 /* don't need many bits for select */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <signal.h>
#include <termios.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <libutil.h>
#include <paths.h>
#include <poll.h>
#include <pwd.h>
#include <syslog.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef USE_BLACKLIST
#include <blacklist.h>
#endif
#ifndef TIOCPKT_WINDOW
#define TIOCPKT_WINDOW 0x80
#endif
#define ARGSTR "Daln"
char *env[2];
#define NMAX 30
char lusername[NMAX+1], rusername[NMAX+1];
static char term[64] = "TERM=";
#define ENVSIZE (sizeof("TERM=")-1) /* skip null for concatenation */
int keepalive = 1;
int check_all = 0;
int no_delay;
struct passwd *pwd;
union sockunion {
struct sockinet {
u_char si_len;
u_char si_family;
u_short si_port;
} su_si;
struct sockaddr_in su_sin;
struct sockaddr_in6 su_sin6;
};
#define su_len su_si.si_len
#define su_family su_si.si_family
#define su_port su_si.si_port
void doit(int, union sockunion *);
int control(int, char *, int);
void protocol(int, int);
void cleanup(int);
void fatal(int, char *, int);
int do_rlogin(union sockunion *);
void getstr(char *, int, char *);
void setup_term(int);
int do_krb_login(struct sockaddr_in *);
void usage(void);
int
main(int argc, char *argv[])
{
extern int __check_rhosts_file;
union sockunion from;
socklen_t fromlen;
int ch, on;
openlog("rlogind", LOG_PID | LOG_CONS, LOG_AUTH);
opterr = 0;
while ((ch = getopt(argc, argv, ARGSTR)) != -1)
switch (ch) {
case 'D':
no_delay = 1;
break;
case 'a':
check_all = 1;
break;
case 'l':
__check_rhosts_file = 0;
break;
case 'n':
keepalive = 0;
break;
case '?':
default:
usage();
break;
}
argc -= optind;
argv += optind;
fromlen = sizeof (from);
if (getpeername(0, (struct sockaddr *)&from, &fromlen) < 0) {
syslog(LOG_ERR,"Can't get peer name of remote host: %m");
fatal(STDERR_FILENO, "Can't get peer name of remote host", 1);
}
on = 1;
if (keepalive &&
setsockopt(0, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof (on)) < 0)
syslog(LOG_WARNING, "setsockopt (SO_KEEPALIVE): %m");
if (no_delay &&
setsockopt(0, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) < 0)
syslog(LOG_WARNING, "setsockopt (TCP_NODELAY): %m");
if (from.su_family == AF_INET)
{
on = IPTOS_LOWDELAY;
if (setsockopt(0, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)) < 0)
syslog(LOG_WARNING, "setsockopt (IP_TOS): %m");
}
doit(0, &from);
return 0;
}
int child;
int netf;
char line[MAXPATHLEN];
int confirmed;
struct winsize win = { 0, 0, 0, 0 };
void
doit(int f, union sockunion *fromp)
{
int master, pid, on = 1;
int authenticated = 0;
char hostname[2 * MAXHOSTNAMELEN + 1];
char nameinfo[2 * INET6_ADDRSTRLEN + 1];
char c;
alarm(60);
read(f, &c, 1);
if (c != 0)
exit(1);
alarm(0);
realhostname_sa(hostname, sizeof(hostname) - 1,
(struct sockaddr *)fromp, fromp->su_len);
/* error check ? */
fromp->su_port = ntohs((u_short)fromp->su_port);
hostname[sizeof(hostname) - 1] = '\0';
{
if ((fromp->su_family != AF_INET
#ifdef INET6
&& fromp->su_family != AF_INET6
#endif
) ||
fromp->su_port >= IPPORT_RESERVED ||
fromp->su_port < IPPORT_RESERVED/2) {
getnameinfo((struct sockaddr *)fromp,
fromp->su_len,
nameinfo, sizeof(nameinfo), NULL, 0,
NI_NUMERICHOST);
/* error check ? */
syslog(LOG_NOTICE, "Connection from %s on illegal port",
nameinfo);
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "illegal port");
#endif
fatal(f, "Permission denied", 0);
}
#ifdef IP_OPTIONS
if (fromp->su_family == AF_INET)
{
u_char optbuf[BUFSIZ/3];
socklen_t optsize = sizeof(optbuf);
int ipproto, i;
struct protoent *ip;
if ((ip = getprotobyname("ip")) != NULL)
ipproto = ip->p_proto;
else
ipproto = IPPROTO_IP;
if (getsockopt(0, ipproto, IP_OPTIONS, (char *)optbuf,
&optsize) == 0 && optsize != 0) {
for (i = 0; i < optsize; ) {
u_char c = optbuf[i];
if (c == IPOPT_LSRR || c == IPOPT_SSRR) {
syslog(LOG_NOTICE,
"Connection refused from %s with IP option %s",
inet_ntoa(fromp->su_sin.sin_addr),
c == IPOPT_LSRR ? "LSRR" : "SSRR");
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "source routing present");
#endif
exit(1);
}
if (c == IPOPT_EOL)
break;
i += (c == IPOPT_NOP) ? 1 : optbuf[i+1];
}
}
}
#endif
if (do_rlogin(fromp) == 0)
authenticated++;
}
if (confirmed == 0) {
write(f, "", 1);
confirmed = 1; /* we sent the null! */
}
netf = f;
pid = forkpty(&master, line, NULL, &win);
if (pid < 0) {
if (errno == ENOENT)
fatal(f, "Out of ptys", 0);
else
fatal(f, "Forkpty", 1);
}
if (pid == 0) {
if (f > 2) /* f should always be 0, but... */
(void) close(f);
setup_term(0);
if (*lusername=='-') {
syslog(LOG_ERR, "tried to pass user \"%s\" to login",
lusername);
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "invalid user");
#endif
fatal(STDERR_FILENO, "invalid user", 0);
}
#ifdef USE_BLACKLIST
blacklist(0, STDIN_FILENO, "success");
#endif
if (authenticated) {
execl(_PATH_LOGIN, "login", "-p",
"-h", hostname, "-f", lusername, (char *)NULL);
} else
execl(_PATH_LOGIN, "login", "-p",
"-h", hostname, lusername, (char *)NULL);
fatal(STDERR_FILENO, _PATH_LOGIN, 1);
/*NOTREACHED*/
}
ioctl(f, FIONBIO, &on);
ioctl(master, FIONBIO, &on);
ioctl(master, TIOCPKT, &on);
signal(SIGCHLD, cleanup);
protocol(f, master);
signal(SIGCHLD, SIG_IGN);
cleanup(0);
}
char magic[2] = { 0377, 0377 };
char oobdata[] = {TIOCPKT_WINDOW};
/*
* Handle a "control" request (signaled by magic being present)
* in the data stream. For now, we are only willing to handle
* window size changes.
*/
int
control(int pty, char *cp, int n)
{
struct winsize w;
if (n < 4 + (int)sizeof(w) || cp[2] != 's' || cp[3] != 's')
return (0);
oobdata[0] &= ~TIOCPKT_WINDOW; /* we know he heard */
bcopy(cp+4, (char *)&w, sizeof(w));
w.ws_row = ntohs(w.ws_row);
w.ws_col = ntohs(w.ws_col);
w.ws_xpixel = ntohs(w.ws_xpixel);
w.ws_ypixel = ntohs(w.ws_ypixel);
(void)ioctl(pty, TIOCSWINSZ, &w);
return (4+sizeof (w));
}
/*
* rlogin "protocol" machine.
*/
void
protocol(int f, int p)
{
char pibuf[1024+1], fibuf[1024], *pbp = NULL, *fbp = NULL;
int pcc = 0, fcc = 0;
int cc, nfd, n;
char cntl;
/*
* Must ignore SIGTTOU, otherwise we'll stop
* when we try and set slave pty's window shape
* (our controlling tty is the master pty).
*/
(void) signal(SIGTTOU, SIG_IGN);
send(f, oobdata, 1, MSG_OOB); /* indicate new rlogin */
if (f > p)
nfd = f + 1;
else
nfd = p + 1;
for (;;) {
struct pollfd set[2];
set[0].fd = p;
set[0].events = POLLPRI;
set[1].fd = f;
set[1].events = 0;
if (fcc)
set[0].events |= POLLOUT;
else
set[1].events |= POLLIN;
if (pcc >= 0) {
if (pcc)
set[1].events |= POLLOUT;
else
set[0].events |= POLLIN;
}
if ((n = poll(set, 2, INFTIM)) < 0) {
if (errno == EINTR)
continue;
fatal(f, "poll", 1);
}
if (n == 0) {
/* shouldn't happen... */
sleep(5);
continue;
}
#define pkcontrol(c) ((c)&(TIOCPKT_FLUSHWRITE|TIOCPKT_NOSTOP|TIOCPKT_DOSTOP))
if (set[0].revents & POLLPRI) {
cc = read(p, &cntl, 1);
if (cc == 1 && pkcontrol(cntl)) {
cntl |= oobdata[0];
send(f, &cntl, 1, MSG_OOB);
if (cntl & TIOCPKT_FLUSHWRITE)
pcc = 0;
}
}
if (set[1].revents & POLLIN) {
fcc = read(f, fibuf, sizeof(fibuf));
if (fcc < 0 && errno == EWOULDBLOCK)
fcc = 0;
else {
char *cp;
int left, n;
if (fcc <= 0)
break;
fbp = fibuf;
top:
for (cp = fibuf; cp < fibuf+fcc-1; cp++)
if (cp[0] == magic[0] &&
cp[1] == magic[1]) {
left = fcc - (cp-fibuf);
n = control(p, cp, left);
if (n) {
left -= n;
if (left > 0)
bcopy(cp+n, cp, left);
fcc -= n;
goto top; /* n^2 */
}
}
}
}
if (set[0].revents & POLLOUT && fcc > 0) {
cc = write(p, fbp, fcc);
if (cc > 0) {
fcc -= cc;
fbp += cc;
}
}
if (set[0].revents & POLLIN) {
pcc = read(p, pibuf, sizeof (pibuf));
pbp = pibuf;
if (pcc < 0 && errno == EWOULDBLOCK)
pcc = 0;
else if (pcc <= 0)
break;
else if (pibuf[0] == 0) {
pbp++, pcc--;
} else {
if (pkcontrol(pibuf[0])) {
pibuf[0] |= oobdata[0];
send(f, &pibuf[0], 1, MSG_OOB);
}
pcc = 0;
}
}
if (set[1].revents & POLLOUT && pcc > 0) {
cc = write(f, pbp, pcc);
if (cc > 0) {
pcc -= cc;
pbp += cc;
}
}
}
}
void
cleanup(int signo __unused)
{
shutdown(netf, SHUT_RDWR);
exit(1);
}
void
fatal(int f, char *msg, int syserr)
{
int len;
char buf[BUFSIZ], *bp = buf;
/*
* Prepend binary one to message if we haven't sent
* the magic null as confirmation.
*/
if (!confirmed)
*bp++ = '\01'; /* error indicator */
if (syserr)
len = snprintf(bp, sizeof(buf), "rlogind: %s: %s.\r\n",
msg, strerror(errno));
else
len = snprintf(bp, sizeof(buf), "rlogind: %s.\r\n", msg);
if (len < 0)
len = 0;
(void) write(f, buf, bp + len - buf);
exit(1);
}
int
do_rlogin(union sockunion *dest)
{
getstr(rusername, sizeof(rusername), "remuser too long");
getstr(lusername, sizeof(lusername), "locuser too long");
getstr(term+ENVSIZE, sizeof(term)-ENVSIZE, "Terminal type too long");
pwd = getpwnam(lusername);
if (pwd == NULL)
return (-1);
/* XXX why don't we syslog() failure? */
return (iruserok_sa(dest, dest->su_len, pwd->pw_uid == 0, rusername,
lusername));
}
void
getstr(char *buf, int cnt, char *errmsg)
{
char c;
do {
if (read(STDIN_FILENO, &c, 1) != 1)
exit(1);
if (--cnt < 0) {
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "buffer overflow");
#endif
fatal(STDOUT_FILENO, errmsg, 0);
}
*buf++ = c;
} while (c != 0);
}
extern char **environ;
void
setup_term(int fd)
{
char *cp;
char *speed;
struct termios tt, def;
cp = strchr(term + ENVSIZE, '/');
#ifndef notyet
tcgetattr(fd, &tt);
if (cp) {
*cp++ = '\0';
speed = cp;
cp = strchr(speed, '/');
if (cp)
*cp++ = '\0';
cfsetspeed(&tt, atoi(speed));
}
cfmakesane(&def);
tt.c_iflag = def.c_iflag;
tt.c_oflag = def.c_oflag;
tt.c_lflag = def.c_lflag;
tcsetattr(fd, TCSAFLUSH, &tt);
#else
if (cp) {
*cp++ = '\0';
speed = cp;
cp = strchr(speed, '/');
if (cp)
*cp++ = '\0';
tcgetattr(fd, &tt);
cfsetspeed(&tt, atoi(speed));
tcsetattr(fd, TCSAFLUSH, &tt);
}
#endif
env[0] = term;
env[1] = 0;
environ = env;
}
void
usage(void)
{
syslog(LOG_ERR, "usage: rlogind [-" ARGSTR "]");
}

24
libexec/rshd/Makefile
View File

@ -1,24 +0,0 @@
# From: @(#)Makefile 8.1 (Berkeley) 6/4/93
# $FreeBSD$
PACKAGE=rcmds
.include <src.opts.mk>
PROG= rshd
MAN= rshd.8
PACKAGE=rcmds
WARNS?= 3
WFORMAT=0
LIBADD= util pam
.if ${MK_BLACKLIST_SUPPORT} != "no"
CFLAGS+= -DUSE_BLACKLIST -I${SRCTOP}/contrib/blacklist/include
LIBADD+= blacklist
LDFLAGS+=-L${LIBBLACKLISTDIR}
.endif
.include <bsd.prog.mk>

23
libexec/rshd/Makefile.depend
View File

@ -1,23 +0,0 @@
# $FreeBSD$
# Autogenerated - do NOT edit!
DIRDEPS = \
gnu/lib/csu \
gnu/lib/libgcc \
include \
include/arpa \
include/xlocale \
lib/${CSU_DIR} \
lib/libblacklist \
lib/libc \
lib/libcompiler_rt \
lib/libpam/libpam \
lib/libthr \
lib/libutil \
.include <dirdeps.mk>
.if ${DEP_RELDIR} == ${_DEP_RELDIR}
# local dependencies - needed for -jN in clean tree
.endif

277
libexec/rshd/rshd.8
View File

@ -1,277 +0,0 @@
.\" Copyright (c) 1983, 1989, 1991, 1993
.\" The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
.\"
.\" @(#)rshd.8 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd July 3, 2017
.Dt RSHD 8
.Os
.Sh NAME
.Nm rshd
.Nd remote shell server
.Sh SYNOPSIS
.Nm
.Op Fl aDLln
.Sh DEPRECATION NOTICE
.Nm
is deprecated and will be removed from future versions of the
.Fx
base system.
If
.Nm
is still required, it can be installed from ports or packages
(net/bsdrcmds).
.Sh DESCRIPTION
The
.Nm
utility
is the server for the
.Xr rcmd 3
routine and, consequently, for the
.Xr rsh 1
utility.
The server provides remote execution facilities
with authentication based on privileged port numbers from trusted hosts.
.Pp
The
.Nm
utility listens for service requests at the port indicated in
the
.Dq cmd
service specification; see
.Xr services 5 .
When a service request is received the following protocol
is initiated:
.Bl -enum
.It
The server checks the client's source port.
If the port is not in the range 512-1023, the server
aborts the connection.
.It
The server reads characters from the socket up
to a
.Tn NUL
(`\e0') byte.
The resultant string is
interpreted as an
.Tn ASCII
number, base 10.
.It
If the number received in step 2 is non-zero,
it is interpreted as the port number of a secondary
stream to be used for the
.Em stderr .
A second connection is then created to the specified
port on the client's machine.
The source port of this
second connection is also in the range 512-1023.
.It
The server checks the client's source address
and requests the corresponding host name (see
.Xr gethostbyaddr 3 ,
.Xr hosts 5
and
.Xr named 8 ) .
If the hostname cannot be determined or the hostname and address do
not match after verification,
the dot-notation representation of the host address is used.
.It
A null terminated user name of at most 16 characters
is retrieved on the initial socket.
This user name
is interpreted as the user identity on the
.Em client Ns 's
machine.
.It
A null terminated user name of at most 16 characters
is retrieved on the initial socket.
This user name
is interpreted as a user identity to use on the
.Em server Ns 's
machine.
.It
A null terminated command to be passed to a
shell is retrieved on the initial socket.
The length of
the command is limited by the upper bound on the size of
the system's argument list.
.It
The
.Nm
utility then validates the user using
.Xr ruserok 3 ,
which uses the file
.Pa /etc/hosts.equiv
and the
.Pa .rhosts
file found in the user's home directory.
The
.Fl l
option prevents
.Xr ruserok 3
from doing any validation based on the user's
.Pa .rhosts
file,
unless the user is the superuser.
.It
A
.Tn NUL
byte is returned on the initial socket
and the command line is passed to the normal login
shell of the user.
The
shell inherits the network connections established
by
.Nm .
.El
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl a
This flag is ignored, and is present for compatibility purposes.
.It Fl D
Sets the TCP_NODELAY socket option, which improves the performance
of small back-to-back writes at the expense of additional network
traffic.
.It Fl L
Causes all successful accesses to be logged to
.Xr syslogd 8
as
.Li auth.info
messages.
.It Fl l
Do not use the user's
.Pa .rhosts
file for authentication, unless the user is the superuser.
.It Fl n
Turn off transport level keepalive messages.
This will prevent sessions
from timing out if the client crashes or becomes unreachable.
.El
.Sh FILES
.Bl -tag -width /var/run/nologin -compact
.It Pa /etc/hosts
.It Pa /etc/hosts.equiv
.It Pa /etc/login.conf
.It Ev $HOME Ns Pa /.rhosts
.Pp
.It Pa /etc/pam.conf
.Nm
uses
.Pa /etc/pam.conf
entries with service name
.Dq rsh .
Authentication modules requiring passwords (such as
.Nm pam_unix )
are not supported.
.El
.Sh DIAGNOSTICS
Except for the last one listed below,
all diagnostic messages
are returned on the initial socket,
after which any network connections are closed.
An error is indicated by a leading byte with a value of
1 (0 is returned in step 10 above upon successful completion
of all the steps prior to the execution of the login shell).
.Bl -tag -width indent
.It Sy Locuser too long.
The name of the user on the client's machine is
longer than 16 characters.
.It Sy Ruser too long.
The name of the user on the remote machine is
longer than 16 characters.
.It Sy Command too long.
The command line passed exceeds the size of the argument
list (as configured into the system).
.It Sy Login incorrect.
No password file entry for the user name existed
or the authentication procedure described above failed.
.It Sy Remote directory.
The
.Xr chdir 2
function to the home directory failed.
.It Sy Logins not available right now.
The
.Xr rsh 1
utility was attempted outside the allowed hours defined in
.Pa /etc/login.conf
for the local user's login class.
.It Sy Can't make pipe.
The pipe needed for the
.Em stderr ,
was not created.
.It Sy Can't fork; try again.
A
.Xr fork 2
by the server failed.
.It Sy <shellname>: ...
The user's login shell could not be started.
This message is returned
on the connection associated with the
.Em stderr ,
and is not preceded by a flag byte.
.El
.Sh SEE ALSO
.Xr rlogin 1 ,
.Xr rsh 1 ,
.Xr gethostbyaddr 3 ,
.Xr rcmd 3 ,
.Xr ruserok 3 ,
.Xr hosts 5 ,
.Xr hosts.equiv 5 ,
.Xr login.conf 5 ,
.Xr services 5 ,
.Xr named 8 ,
.Xr rlogind 8 ,
.Xr syslogd 8
.Sh HISTORY
IPv6 support was added by WIDE/KAME project.
.Sh BUGS
The authentication procedure used here assumes the integrity
of each client machine and the connecting medium.
This is
insecure, but is useful in an
.Dq open
environment.
.Pp
A facility to allow all data exchanges to be encrypted should be
present.
.Pp
Post-PAM,
.Fx
also needs the following patch applied besides properly configuring
.Pa .rhosts :
.Bd -literal -offset indent
--- etc/pam.d/rsh.orig Wed Dec 17 14:36:20 2003
+++ etc/pam.d/rsh Wed Dec 17 14:30:43 2003
@@ -9 +9 @@
-auth required pam_rhosts.so no_warn
+auth required pam_rhosts.so no_warn allow_root
.Ed
.Pp
A more extensible protocol (such as Telnet) should be used.

617
libexec/rshd/rshd.c
View File

@ -1,617 +0,0 @@
/*-
* Copyright (c) 1988, 1989, 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* Portions of this software were developed for the FreeBSD Project by
* ThinkSec AS and NAI Labs, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
* ("CBOSS"), as part of the DARPA CHATS research program.
*
* 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 University 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 REGENTS 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 REGENTS 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1988, 1989, 1992, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static const char sccsid[] = "@(#)rshd.c 8.2 (Berkeley) 4/6/94";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* remote shell server:
* [port]\0
* ruser\0
* luser\0
* command\0
* data
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libutil.h>
#include <paths.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <login_cap.h>
#include <security/pam_appl.h>
#include <security/openpam.h>
#include <sys/wait.h>
#ifdef USE_BLACKLIST
#include <blacklist.h>
#endif
static struct pam_conv pamc = { openpam_nullconv, NULL };
static pam_handle_t *pamh;
static int pam_err;
#define PAM_END { \
if ((pam_err = pam_setcred(pamh, PAM_DELETE_CRED)) != PAM_SUCCESS) \
syslog(LOG_ERR|LOG_AUTH, "pam_setcred(): %s", pam_strerror(pamh, pam_err)); \
if ((pam_err = pam_close_session(pamh,0)) != PAM_SUCCESS) \
syslog(LOG_ERR|LOG_AUTH, "pam_close_session(): %s", pam_strerror(pamh, pam_err)); \
if ((pam_err = pam_end(pamh, pam_err)) != PAM_SUCCESS) \
syslog(LOG_ERR|LOG_AUTH, "pam_end(): %s", pam_strerror(pamh, pam_err)); \
}
int keepalive = 1;
int log_success; /* If TRUE, log all successful accesses */
int sent_null;
int no_delay;
void doit(struct sockaddr *);
static void rshd_errx(int, const char *, ...) __printf0like(2, 3);
void getstr(char *, int, const char *);
int local_domain(char *);
char *topdomain(char *);
void usage(void);
char slash[] = "/";
char bshell[] = _PATH_BSHELL;
#define OPTIONS "aDLln"
int
main(int argc, char *argv[])
{
extern int __check_rhosts_file;
struct linger linger;
socklen_t fromlen;
int ch, on = 1;
struct sockaddr_storage from;
openlog("rshd", LOG_PID, LOG_DAEMON);
opterr = 0;
while ((ch = getopt(argc, argv, OPTIONS)) != -1)
switch (ch) {
case 'a':
/* ignored for compatibility */
break;
case 'l':
__check_rhosts_file = 0;
break;
case 'n':
keepalive = 0;
break;
case 'D':
no_delay = 1;
break;
case 'L':
log_success = 1;
break;
case '?':
default:
usage();
break;
}
argc -= optind;
argv += optind;
fromlen = sizeof (from);
if (getpeername(0, (struct sockaddr *)&from, &fromlen) < 0) {
syslog(LOG_ERR, "getpeername: %m");
exit(1);
}
if (keepalive &&
setsockopt(0, SOL_SOCKET, SO_KEEPALIVE, (char *)&on,
sizeof(on)) < 0)
syslog(LOG_WARNING, "setsockopt (SO_KEEPALIVE): %m");
linger.l_onoff = 1;
linger.l_linger = 60; /* XXX */
if (setsockopt(0, SOL_SOCKET, SO_LINGER, (char *)&linger,
sizeof (linger)) < 0)
syslog(LOG_WARNING, "setsockopt (SO_LINGER): %m");
if (no_delay &&
setsockopt(0, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) < 0)
syslog(LOG_WARNING, "setsockopt (TCP_NODELAY): %m");
doit((struct sockaddr *)&from);
/* NOTREACHED */
return(0);
}
extern char **environ;
void
doit(struct sockaddr *fromp)
{
extern char *__rcmd_errstr; /* syslog hook from libc/net/rcmd.c. */
struct passwd *pwd;
u_short port;
fd_set ready, readfrom;
int cc, nfd, pv[2], pid, s;
int one = 1;
const char *cp, *errorstr;
char sig, buf[BUFSIZ];
char *cmdbuf, luser[16], ruser[16];
char rhost[2 * MAXHOSTNAMELEN + 1];
char numericname[INET6_ADDRSTRLEN];
int af, srcport;
int maxcmdlen;
login_cap_t *lc;
maxcmdlen = (int)sysconf(_SC_ARG_MAX);
if (maxcmdlen <= 0 || (cmdbuf = malloc(maxcmdlen)) == NULL)
exit(1);
(void) signal(SIGINT, SIG_DFL);
(void) signal(SIGQUIT, SIG_DFL);
(void) signal(SIGTERM, SIG_DFL);
af = fromp->sa_family;
srcport = ntohs(*((in_port_t *)&fromp->sa_data));
if (af == AF_INET) {
inet_ntop(af, &((struct sockaddr_in *)fromp)->sin_addr,
numericname, sizeof numericname);
} else if (af == AF_INET6) {
inet_ntop(af, &((struct sockaddr_in6 *)fromp)->sin6_addr,
numericname, sizeof numericname);
} else {
syslog(LOG_ERR, "malformed \"from\" address (af %d)", af);
exit(1);
}
#ifdef IP_OPTIONS
if (af == AF_INET) {
u_char optbuf[BUFSIZ/3];
socklen_t optsize = sizeof(optbuf), ipproto, i;
struct protoent *ip;
if ((ip = getprotobyname("ip")) != NULL)
ipproto = ip->p_proto;
else
ipproto = IPPROTO_IP;
if (!getsockopt(0, ipproto, IP_OPTIONS, optbuf, &optsize) &&
optsize != 0) {
for (i = 0; i < optsize; ) {
u_char c = optbuf[i];
if (c == IPOPT_LSRR || c == IPOPT_SSRR) {
syslog(LOG_NOTICE,
"connection refused from %s with IP option %s",
numericname,
c == IPOPT_LSRR ? "LSRR" : "SSRR");
exit(1);
}
if (c == IPOPT_EOL)
break;
i += (c == IPOPT_NOP) ? 1 : optbuf[i+1];
}
}
}
#endif
if (srcport >= IPPORT_RESERVED ||
srcport < IPPORT_RESERVED/2) {
syslog(LOG_NOTICE|LOG_AUTH,
"connection from %s on illegal port %u",
numericname,
srcport);
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "illegal port");
#endif
exit(1);
}
(void) alarm(60);
port = 0;
s = 0; /* not set or used if port == 0 */
for (;;) {
char c;
if ((cc = read(STDIN_FILENO, &c, 1)) != 1) {
if (cc < 0)
syslog(LOG_NOTICE, "read: %m");
shutdown(0, SHUT_RDWR);
exit(1);
}
if (c == 0)
break;
port = port * 10 + c - '0';
}
(void) alarm(0);
if (port != 0) {
int lport = IPPORT_RESERVED - 1;
s = rresvport_af(&lport, af);
if (s < 0) {
syslog(LOG_ERR, "can't get stderr port: %m");
exit(1);
}
if (port >= IPPORT_RESERVED ||
port < IPPORT_RESERVED/2) {
syslog(LOG_NOTICE|LOG_AUTH,
"2nd socket from %s on unreserved port %u",
numericname,
port);
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "unreserved port");
#endif
exit(1);
}
*((in_port_t *)&fromp->sa_data) = htons(port);
if (connect(s, fromp, fromp->sa_len) < 0) {
syslog(LOG_INFO, "connect second port %d: %m", port);
exit(1);
}
}
errorstr = NULL;
realhostname_sa(rhost, sizeof(rhost) - 1, fromp, fromp->sa_len);
rhost[sizeof(rhost) - 1] = '\0';
/* XXX truncation! */
(void) alarm(60);
getstr(ruser, sizeof(ruser), "ruser");
getstr(luser, sizeof(luser), "luser");
getstr(cmdbuf, maxcmdlen, "command");
(void) alarm(0);
pam_err = pam_start("rsh", luser, &pamc, &pamh);
if (pam_err != PAM_SUCCESS) {
syslog(LOG_ERR|LOG_AUTH, "pam_start(): %s",
pam_strerror(pamh, pam_err));
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "login incorrect");
#endif
rshd_errx(1, "Login incorrect.");
}
if ((pam_err = pam_set_item(pamh, PAM_RUSER, ruser)) != PAM_SUCCESS ||
(pam_err = pam_set_item(pamh, PAM_RHOST, rhost)) != PAM_SUCCESS) {
syslog(LOG_ERR|LOG_AUTH, "pam_set_item(): %s",
pam_strerror(pamh, pam_err));
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "login incorrect");
#endif
rshd_errx(1, "Login incorrect.");
}
pam_err = pam_authenticate(pamh, 0);
if (pam_err == PAM_SUCCESS) {
if ((pam_err = pam_get_user(pamh, &cp, NULL)) == PAM_SUCCESS) {
strlcpy(luser, cp, sizeof(luser));
/* XXX truncation! */
}
pam_err = pam_acct_mgmt(pamh, 0);
}
if (pam_err != PAM_SUCCESS) {
syslog(LOG_INFO|LOG_AUTH,
"%s@%s as %s: permission denied (%s). cmd='%.80s'",
ruser, rhost, luser, pam_strerror(pamh, pam_err), cmdbuf);
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "permission denied");
#endif
rshd_errx(1, "Login incorrect.");
}
setpwent();
pwd = getpwnam(luser);
if (pwd == NULL) {
syslog(LOG_INFO|LOG_AUTH,
"%s@%s as %s: unknown login. cmd='%.80s'",
ruser, rhost, luser, cmdbuf);
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "unknown login");
#endif
if (errorstr == NULL)
errorstr = "Login incorrect.";
rshd_errx(1, errorstr, rhost);
}
lc = login_getpwclass(pwd);
if (pwd->pw_uid)
auth_checknologin(lc);
if (chdir(pwd->pw_dir) < 0) {
if (chdir("/") < 0 ||
login_getcapbool(lc, "requirehome", !!pwd->pw_uid)) {
syslog(LOG_INFO|LOG_AUTH,
"%s@%s as %s: no home directory. cmd='%.80s'",
ruser, rhost, luser, cmdbuf);
rshd_errx(0, "No remote home directory.");
}
pwd->pw_dir = slash;
}
if (lc != NULL && fromp->sa_family == AF_INET) { /*XXX*/
char remote_ip[MAXHOSTNAMELEN];
strlcpy(remote_ip, numericname, sizeof(remote_ip));
/* XXX truncation! */
if (!auth_hostok(lc, rhost, remote_ip)) {
syslog(LOG_INFO|LOG_AUTH,
"%s@%s as %s: permission denied (%s). cmd='%.80s'",
ruser, rhost, luser, __rcmd_errstr,
cmdbuf);
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "permission denied");
#endif
rshd_errx(1, "Login incorrect.");
}
if (!auth_timeok(lc, time(NULL)))
rshd_errx(1, "Logins not available right now");
}
/*
* PAM modules might add supplementary groups in
* pam_setcred(), so initialize them first.
* But we need to open the session as root.
*/
if (setusercontext(lc, pwd, pwd->pw_uid, LOGIN_SETGROUP) != 0) {
syslog(LOG_ERR, "setusercontext: %m");
exit(1);
}
if ((pam_err = pam_open_session(pamh, 0)) != PAM_SUCCESS) {
syslog(LOG_ERR, "pam_open_session: %s", pam_strerror(pamh, pam_err));
} else if ((pam_err = pam_setcred(pamh, PAM_ESTABLISH_CRED)) != PAM_SUCCESS) {
syslog(LOG_ERR, "pam_setcred: %s", pam_strerror(pamh, pam_err));
}
(void) write(STDERR_FILENO, "\0", 1);
sent_null = 1;
if (port) {
if (pipe(pv) < 0)
rshd_errx(1, "Can't make pipe.");
pid = fork();
if (pid == -1)
rshd_errx(1, "Can't fork; try again.");
if (pid) {
(void) close(0);
(void) close(1);
(void) close(2);
(void) close(pv[1]);
FD_ZERO(&readfrom);
FD_SET(s, &readfrom);
FD_SET(pv[0], &readfrom);
if (pv[0] > s)
nfd = pv[0];
else
nfd = s;
ioctl(pv[0], FIONBIO, (char *)&one);
/* should set s nbio! */
nfd++;
do {
ready = readfrom;
if (select(nfd, &ready, (fd_set *)0,
(fd_set *)0, (struct timeval *)0) < 0)
break;
if (FD_ISSET(s, &ready)) {
int ret;
ret = read(s, &sig, 1);
if (ret <= 0)
FD_CLR(s, &readfrom);
else
killpg(pid, sig);
}
if (FD_ISSET(pv[0], &ready)) {
errno = 0;
cc = read(pv[0], buf, sizeof(buf));
if (cc <= 0) {
shutdown(s, SHUT_RDWR);
FD_CLR(pv[0], &readfrom);
} else {
(void)write(s, buf, cc);
}
}
} while (FD_ISSET(s, &readfrom) ||
FD_ISSET(pv[0], &readfrom));
PAM_END;
exit(0);
}
(void) close(s);
(void) close(pv[0]);
dup2(pv[1], 2);
close(pv[1]);
}
else {
pid = fork();
if (pid == -1)
rshd_errx(1, "Can't fork; try again.");
if (pid) {
/* Parent. */
while (wait(NULL) > 0 || errno == EINTR)
/* nothing */ ;
PAM_END;
exit(0);
}
}
#ifdef USE_BLACKLIST
blacklist(0, STDIN_FILENO, "success");
#endif
closefrom(3);
if (setsid() == -1)
syslog(LOG_ERR, "setsid() failed: %m");
if (setlogin(pwd->pw_name) < 0)
syslog(LOG_ERR, "setlogin() failed: %m");
if (*pwd->pw_shell == '\0')
pwd->pw_shell = bshell;
(void) pam_setenv(pamh, "HOME", pwd->pw_dir, 1);
(void) pam_setenv(pamh, "SHELL", pwd->pw_shell, 1);
(void) pam_setenv(pamh, "USER", pwd->pw_name, 1);
(void) pam_setenv(pamh, "PATH", _PATH_DEFPATH, 1);
environ = pam_getenvlist(pamh);
(void) pam_end(pamh, pam_err);
cp = strrchr(pwd->pw_shell, '/');
if (cp)
cp++;
else
cp = pwd->pw_shell;
if (setusercontext(lc, pwd, pwd->pw_uid,
LOGIN_SETALL & ~LOGIN_SETGROUP) < 0) {
syslog(LOG_ERR, "setusercontext(): %m");
exit(1);
}
login_close(lc);
endpwent();
if (log_success || pwd->pw_uid == 0) {
syslog(LOG_INFO|LOG_AUTH, "%s@%s as %s: cmd='%.80s'",
ruser, rhost, luser, cmdbuf);
}
execl(pwd->pw_shell, cp, "-c", cmdbuf, (char *)NULL);
err(1, "%s", pwd->pw_shell);
exit(1);
}
/*
* Report error to client. Note: can't be used until second socket has
* connected to client, or older clients will hang waiting for that
* connection first.
*/
static void
rshd_errx(int errcode, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (sent_null == 0)
write(STDERR_FILENO, "\1", 1);
verrx(errcode, fmt, ap);
/* NOTREACHED */
}
void
getstr(char *buf, int cnt, const char *error)
{
char c;
do {
if (read(STDIN_FILENO, &c, 1) != 1)
exit(1);
*buf++ = c;
if (--cnt == 0) {
#ifdef USE_BLACKLIST
blacklist(1, STDIN_FILENO, "buffer overflow");
#endif
rshd_errx(1, "%s too long", error);
}
} while (c != 0);
}
/*
* Check whether host h is in our local domain,
* defined as sharing the last two components of the domain part,
* or the entire domain part if the local domain has only one component.
* If either name is unqualified (contains no '.'),
* assume that the host is local, as it will be
* interpreted as such.
*/
int
local_domain(char *h)
{
char localhost[MAXHOSTNAMELEN];
char *p1, *p2;
localhost[0] = 0;
(void) gethostname(localhost, sizeof(localhost) - 1);
localhost[sizeof(localhost) - 1] = '\0';
/* XXX truncation! */
p1 = topdomain(localhost);
p2 = topdomain(h);
if (p1 == NULL || p2 == NULL || !strcasecmp(p1, p2))
return (1);
return (0);
}
char *
topdomain(char *h)
{
char *p, *maybe = NULL;
int dots = 0;
for (p = h + strlen(h); p >= h; p--) {
if (*p == '.') {
if (++dots == 2)
return (p);
maybe = p;
}
}
return (maybe);
}
void
usage(void)
{
syslog(LOG_ERR, "usage: rshd [-%s]", OPTIONS);
exit(2);
}

4
rescue/rescue/Makefile
View File

@ -67,10 +67,6 @@ CRUNCH_ALIAS_rm= unlink
CRUNCH_ALIAS_ed= red
CRUNCH_ALIAS_pkill= pgrep
.if ${MK_RCMDS} != "no"
CRUNCH_PROGS_bin+= rcp
.endif
.if ${MK_TCSH} != "no"
CRUNCH_PROGS_bin+= csh
CRUNCH_ALIAS_csh= -csh tcsh -tcsh

8
share/man/man5/src.conf.5
View File

@ -1294,14 +1294,6 @@ by proxy.
.It Va WITHOUT_RBOOTD
Set to not build or install
.Xr rbootd 8 .
.It Va WITH_RCMDS
Enable building of the
.Bx
r-commands.
This includes
.Xr rlogin 1 ,
.Xr rsh 1 ,
etc.
.It Va WITH_REPRODUCIBLE_BUILD
Set to exclude build metadata (such as the build time, user, or host)
from the kernel, boot loaders, and uname output, so that builds produce

1
share/mk/src.opts.mk
View File

@ -184,7 +184,6 @@ __DEFAULT_NO_OPTIONS = \
NAND \
OFED \
OPENLDAP \
RCMDS \
REPRODUCIBLE_BUILD \
RPCBIND_WARMSTART_SUPPORT \
SHARED_TOOLCHAIN \

14
tools/build/mk/OptionalObsoleteFiles.inc
View File

@ -7107,20 +7107,6 @@ OLD_FILES+=usr/libexec/rbootd
OLD_FILES+=usr/share/man/man8/rbootd.8.gz
.endif
.if ${MK_RCMDS} == no
OLD_FILES+=bin/rcp
OLD_FILES+=rescue/rcp
OLD_FILES+=usr/bin/rlogin
OLD_FILES+=usr/bin/rsh
OLD_FILES+=usr/libexec/rlogind
OLD_FILES+=usr/libexec/rshd
OLD_FILES+=usr/share/man/man1/rcp.1.gz
OLD_FILES+=usr/share/man/man1/rlogin.1.gz
OLD_FILES+=usr/share/man/man1/rsh.1.gz
OLD_FILES+=usr/share/man/man8/rlogind.8.gz
OLD_FILES+=usr/share/man/man8/rshd.8.gz
.endif
.if ${MK_RESCUE} == no
. if exists(${DESTDIR}${TESTSBASE})
RESCUE_DIRS!=find ${DESTDIR}/rescue -type d 2>/dev/null | sed -e 's,^${DESTDIR}/,,'; echo

8
tools/build/options/WITHOUT_RCMDS
View File

@ -1,8 +0,0 @@
.\" $FreeBSD$
Disable building of the
.Bx
r-commands.
This includes
.Xr rlogin 1 ,
.Xr rsh 1 ,
etc.

8
tools/build/options/WITH_RCMDS
View File

@ -1,8 +0,0 @@
.\" $FreeBSD$
Enable building of the
.Bx
r-commands.
This includes
.Xr rlogin 1 ,
.Xr rsh 1 ,
etc.

1
tools/tools/nanobsd/dhcpd/common
View File

@ -129,7 +129,6 @@ WITHOUT_NLS=true
WITHOUT_NS_CACHING=true
WITHOUT_OBJC=true
WITHOUT_PROFILE=true
WITHOUT_RCMDS=true
WITHOUT_SENDMAIL=true
WITHOUT_SHAREDOCS=true
WITHOUT_SYSCONS=true

1
tools/tools/nanobsd/embedded/common
View File

@ -160,7 +160,6 @@ WITHOUT_NLS=true
WITHOUT_NS_CACHING=true
WITHOUT_OBJC=true
WITHOUT_PROFILE=true
WITHOUT_RCMDS=true
WITHOUT_SENDMAIL=true
WITHOUT_SHAREDOCS=true
WITHOUT_SYSCONS=true

1
tools/tools/nanobsd/gateworks/common
View File

@ -140,7 +140,6 @@ WITHOUT_PMC=true
WITHOUT_PORTSNAP=true
WITHOUT_PROFILE=true
WITHOUT_QUOTAS=true
WITHOUT_RCMDS=true
WITHOUT_RCS=true
WITHOUT_RESCUE=true
WITHOUT_SENDMAIL=true

2
usr.bin/Makefile
View File

@ -250,8 +250,6 @@ SUBDIR.${MK_OPENSSL}+= chkey
SUBDIR.${MK_OPENSSL}+= dc
SUBDIR.${MK_OPENSSL}+= newkey
SUBDIR.${MK_QUOTAS}+= quota
SUBDIR.${MK_RCMDS}+= rlogin
SUBDIR.${MK_RCMDS}+= rsh
SUBDIR.${MK_SENDMAIL}+= vacation
SUBDIR.${MK_TALK}+= talk
SUBDIR.${MK_TELNET}+= telnet

11
usr.bin/rlogin/Makefile
View File

@ -1,11 +0,0 @@
# @(#)Makefile 8.1 (Berkeley) 7/19/93
# $FreeBSD$
PROG= rlogin
PACKAGE=rcmds
BINOWN= root
BINMODE=4555
.include <bsd.prog.mk>

18
usr.bin/rlogin/Makefile.depend
View File

@ -1,18 +0,0 @@
# $FreeBSD$
# Autogenerated - do NOT edit!
DIRDEPS = \
gnu/lib/csu \
gnu/lib/libgcc \
include \
include/xlocale \
lib/${CSU_DIR} \
lib/libc \
lib/libcompiler_rt \
.include <dirdeps.mk>
.if ${DEP_RELDIR} == ${_DEP_RELDIR}
# local dependencies - needed for -jN in clean tree
.endif

167
usr.bin/rlogin/rlogin.1
View File

@ -1,167 +0,0 @@
.\" Copyright (c) 1983, 1990, 1993
.\" The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
.\"
.\" @(#)rlogin.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$
.\"
.Dd July 3, 2017
.Dt RLOGIN 1
.Os
.Sh NAME
.Nm rlogin
.Nd remote login
.Sh SYNOPSIS
.Ar rlogin
.Op Fl 468DEd
.Op Fl e Ar char
.Op Fl i Ar localname
.Op Fl l Ar username
.Ar host
.Sh DEPRECATION NOTICE
.Nm
is deprecated and will be removed from future versions of the
.Fx
base system.
If
.Nm
is still required, it can be installed from ports or packages
(net/bsdrcmds).
.Sh DESCRIPTION
The
.Nm
utility starts a terminal session on a remote host
.Ar host .
.Pp
The standard Berkeley
.Pa rhosts
authorization mechanism is used.
.Pp
The following options are available:
.Bl -tag -width flag
.It Fl 4
Use IPv4 addresses only.
.It Fl 6
Use IPv6 addresses only.
.It Fl 8
Allow an eight-bit input data path at all times; otherwise
parity bits are stripped except when the remote side's stop and start
characters are other than
^S/^Q.
.It Fl D
Set the TCP_NODELAY socket option which can improve interactive response
at the expense of increased network load.
.It Fl E
Stop any character from being recognized as an escape character.
When used with the
.Fl 8
option, this provides a completely transparent connection.
.It Fl d
Turn on socket debugging (see
.Xr setsockopt 2 )
on the TCP sockets used for communication with the remote host.
.It Fl e
Allow user specification of the escape character, which is
.Dq ~
by default.
This specification may be as a literal character, or as an octal
value in the form \ennn.
.It Fl i
Allow the caller to specify a different local name to be used
for authentication.
This option is restricted to processes with uid 0.
.It Fl l
Specify a different
.Ar username
for the remote login.
If this option is not specified, your local username will be used.
.El
.Pp
A line of the form
.Dq Ao escape char Ac Ns \&.
disconnects from the remote host.
Similarly, the line
.Dq Ao escape char Ac Ns ^Z
will suspend the
.Nm
session, and
.Dq Ao escape\ char Ac Ns Ao delayed-suspend\ char Ac
suspends the
send portion of the
.Nm
session, but allows output from the remote system.
By default, the tilde
.Pq Dq ~
character is the escape character, and
normally control-Y
.Pq Dq ^Y
is the delayed-suspend character.
.Pp
All echoing takes place at the remote site, so that (except for delays)
the
.Nm
is transparent.
Flow control via ^S/^Q and flushing of input and output on interrupts
are handled properly.
.Sh ENVIRONMENT
The following environment variable is utilized by
.Nm :
.Bl -tag -width TERM
.It Ev TERM
Determines the user's terminal type.
.El
.Sh FILES
.Bl -tag -width /etc/hosts -compact
.It Pa /etc/hosts
.It Pa /etc/hosts.equiv
.It Ev $HOME Ns Pa /.rhosts
.El
.Sh SEE ALSO
.Xr login 1 ,
.Xr rsh 1 ,
.Xr telnet 1 ,
.Xr setsockopt 2 ,
.Xr ruserok 3 ,
.Xr tty 4 ,
.Xr hosts 5 ,
.Xr hosts.equiv 5 ,
.Xr rlogind 8 ,
.Xr rshd 8
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.2 .
.Pp
IPv6 support was added by WIDE/KAME project.
.Sh BUGS
The
.Nm
utility will be replaced by
.Xr telnet 1
in the near future.
.Pp
More of the environment should be propagated.

722
usr.bin/rlogin/rlogin.c
View File

@ -1,722 +0,0 @@
/*
* Copyright (c) 1983, 1990, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* Portions of this software were developed for the FreeBSD Project by
* ThinkSec AS and NAI Labs, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
* ("CBOSS"), as part of the DARPA CHATS research program.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1983, 1990, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#if 0
#ifndef lint
static const char sccsid[] = "@(#)rlogin.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* rlogin - remote login
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <paths.h>
#include <pwd.h>
#include <setjmp.h>
#include <termios.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifndef TIOCPKT_WINDOW
#define TIOCPKT_WINDOW 0x80
#endif
/* concession to Sun */
#ifndef SIGUSR1
#define SIGUSR1 30
#endif
static int eight, rem;
static struct termios deftty;
static int family = PF_UNSPEC;
static int noescape;
static u_char escapechar = '~';
#define get_window_size(fd, wp) ioctl(fd, TIOCGWINSZ, wp)
static struct winsize winsize;
static void catch_child(int);
static void copytochild(int);
static _Noreturn void doit(long);
static _Noreturn void done(int);
static void echo(char);
static u_int getescape(const char *);
static void lostpeer(int);
static void mode(int);
static void msg(const char *);
static void oob(int);
static int reader(int);
static void sendwindow(void);
static void setsignal(int);
static void sigwinch(int);
static void stop(char);
static _Noreturn void usage(void);
static void writer(void);
static void writeroob(int);
int
main(int argc, char *argv[])
{
struct passwd *pw;
struct servent *sp;
struct termios tty;
long omask;
int argoff, ch, dflag, Dflag, one;
uid_t uid;
char *host, *localname, *p, *user, term[1024] = "network";
speed_t ospeed;
struct sockaddr_storage ss;
socklen_t sslen;
size_t len, len2;
int i;
argoff = dflag = Dflag = 0;
one = 1;
host = localname = user = NULL;
if ((p = strrchr(argv[0], '/')))
++p;
else
p = argv[0];
if (strcmp(p, "rlogin"))
host = p;
/* handle "rlogin host flags" */
if (!host && argc > 2 && argv[1][0] != '-') {
host = argv[1];
argoff = 1;
}
#define OPTIONS "468DEde:i:l:"
while ((ch = getopt(argc - argoff, argv + argoff, OPTIONS)) != -1)
switch(ch) {
case '4':
family = PF_INET;
break;
case '6':
family = PF_INET6;
break;
case '8':
eight = 1;
break;
case 'D':
Dflag = 1;
break;
case 'E':
noescape = 1;
break;
case 'd':
dflag = 1;
break;
case 'e':
noescape = 0;
escapechar = getescape(optarg);
break;
case 'i':
if (getuid() != 0)
errx(1, "-i user: permission denied");
localname = optarg;
break;
case 'l':
user = optarg;
break;
case '?':
default:
usage();
}
optind += argoff;
/* if haven't gotten a host yet, do so */
if (!host && !(host = argv[optind++]))
usage();
if (argv[optind])
usage();
if (!(pw = getpwuid(uid = getuid())))
errx(1, "unknown user id");
if (!user)
user = pw->pw_name;
if (!localname)
localname = pw->pw_name;
sp = NULL;
sp = getservbyname("login", "tcp");
if (sp == NULL)
errx(1, "login/tcp: unknown service");
if ((p = getenv("TERM")) != NULL)
(void)strlcpy(term, p, sizeof(term));
len = strlen(term);
if (len < (sizeof(term) - 1) && tcgetattr(0, &tty) == 0) {
/* start at 2 to include the / */
for (ospeed = i = cfgetospeed(&tty), len2 = 2; i > 9; len2++)
i /= 10;
if (len + len2 < sizeof(term))
(void)snprintf(term + len, len2 + 1, "/%d", ospeed);
}
(void)get_window_size(0, &winsize);
(void)signal(SIGPIPE, lostpeer);
/* will use SIGUSR1 for window size hack, so hold it off */
omask = sigblock(sigmask(SIGURG) | sigmask(SIGUSR1));
/*
* We set SIGURG and SIGUSR1 below so that an
* incoming signal will be held pending rather than being
* discarded. Note that these routines will be ready to get
* a signal by the time that they are unblocked below.
*/
(void)signal(SIGURG, copytochild);
(void)signal(SIGUSR1, writeroob);
rem = rcmd_af(&host, sp->s_port, localname, user, term, 0, family);
if (rem < 0)
exit(1);
if (dflag &&
setsockopt(rem, SOL_SOCKET, SO_DEBUG, &one, sizeof(one)) < 0)
warn("setsockopt");
if (Dflag &&
setsockopt(rem, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one)) < 0)
warn("setsockopt NODELAY (ignored)");
sslen = sizeof(ss);
one = IPTOS_LOWDELAY;
if (getsockname(rem, (struct sockaddr *)&ss, &sslen) == 0 &&
ss.ss_family == AF_INET) {
if (setsockopt(rem, IPPROTO_IP, IP_TOS, (char *)&one,
sizeof(int)) < 0)
warn("setsockopt TOS (ignored)");
} else
if (ss.ss_family == AF_INET)
warn("setsockopt getsockname failed");
(void)setuid(uid);
doit(omask);
/*NOTREACHED*/
}
static int child;
static void
doit(long omask)
{
(void)signal(SIGINT, SIG_IGN);
setsignal(SIGHUP);
setsignal(SIGQUIT);
mode(1);
child = fork();
if (child == -1) {
warn("fork");
done(1);
}
if (child == 0) {
if (reader(omask) == 0) {
msg("connection closed");
exit(0);
}
sleep(1);
msg("\007connection closed");
exit(1);
}
/*
* We may still own the socket, and may have a pending SIGURG (or might
* receive one soon) that we really want to send to the reader. When
* one of these comes in, the trap copytochild simply copies such
* signals to the child. We can now unblock SIGURG and SIGUSR1
* that were set above.
*/
(void)sigsetmask(omask);
(void)signal(SIGCHLD, catch_child);
writer();
msg("closed connection");
done(0);
}
/* trap a signal, unless it is being ignored. */
static void
setsignal(int sig)
{
int omask = sigblock(sigmask(sig));
if (signal(sig, exit) == SIG_IGN)
(void)signal(sig, SIG_IGN);
(void)sigsetmask(omask);
}
static void
done(int status)
{
int w, wstatus;
mode(0);
if (child > 0) {
/* make sure catch_child does not snap it up */
(void)signal(SIGCHLD, SIG_DFL);
if (kill(child, SIGKILL) >= 0)
while ((w = wait(&wstatus)) > 0 && w != child);
}
exit(status);
}
static int dosigwinch;
/*
* This is called when the reader process gets the out-of-band (urgent)
* request to turn on the window-changing protocol.
*/
/* ARGSUSED */
static void
writeroob(int signo __unused)
{
if (dosigwinch == 0) {
sendwindow();
(void)signal(SIGWINCH, sigwinch);
}
dosigwinch = 1;
}
/* ARGSUSED */
static void
catch_child(int signo __unused)
{
pid_t pid;
int status;
for (;;) {
pid = wait3(&status, WNOHANG|WUNTRACED, NULL);
if (pid == 0)
return;
/* if the child (reader) dies, just quit */
if (pid < 0 || (pid == child && !WIFSTOPPED(status)))
done(WTERMSIG(status) | WEXITSTATUS(status));
}
/* NOTREACHED */
}
/*
* writer: write to remote: 0 -> line.
* ~. terminate
* ~^Z suspend rlogin process.
* ~<delayed-suspend char> suspend rlogin process, but leave reader alone.
*/
static void
writer(void)
{
int bol, local, n;
char c;
bol = 1; /* beginning of line */
local = 0;
for (;;) {
n = read(STDIN_FILENO, &c, 1);
if (n <= 0) {
if (n < 0 && errno == EINTR)
continue;
break;
}
/*
* If we're at the beginning of the line and recognize a
* command character, then we echo locally. Otherwise,
* characters are echo'd remotely. If the command character
* is doubled, this acts as a force and local echo is
* suppressed.
*/
if (bol) {
bol = 0;
if (!noescape && c == escapechar) {
local = 1;
continue;
}
} else if (local) {
local = 0;
if (c == '.' || CCEQ(deftty.c_cc[VEOF], c)) {
echo(c);
break;
}
if (CCEQ(deftty.c_cc[VSUSP], c) ||
CCEQ(deftty.c_cc[VDSUSP], c)) {
bol = 1;
echo(c);
stop(c);
continue;
}
if (c != escapechar)
(void)write(rem, &escapechar, 1);
}
if (write(rem, &c, 1) == 0) {
msg("line gone");
break;
}
bol = CCEQ(deftty.c_cc[VKILL], c) ||
CCEQ(deftty.c_cc[VEOF], c) ||
CCEQ(deftty.c_cc[VINTR], c) ||
CCEQ(deftty.c_cc[VSUSP], c) ||
c == '\r' || c == '\n';
}
}
static void
echo(char c)
{
char *p;
char buf[8];
p = buf;
c &= 0177;
*p++ = escapechar;
if (c < ' ') {
*p++ = '^';
*p++ = c + '@';
} else if (c == 0177) {
*p++ = '^';
*p++ = '?';
} else
*p++ = c;
*p++ = '\r';
*p++ = '\n';
(void)write(STDOUT_FILENO, buf, p - buf);
}
static void
stop(char cmdc)
{
mode(0);
(void)signal(SIGCHLD, SIG_IGN);
(void)kill(CCEQ(deftty.c_cc[VSUSP], cmdc) ? 0 : getpid(), SIGTSTP);
(void)signal(SIGCHLD, catch_child);
mode(1);
sigwinch(0); /* check for size changes */
}
/* ARGSUSED */
static void
sigwinch(int signo __unused)
{
struct winsize ws;
if (dosigwinch && get_window_size(0, &ws) == 0 &&
bcmp(&ws, &winsize, sizeof(ws))) {
winsize = ws;
sendwindow();
}
}
/*
* Send the window size to the server via the magic escape
*/
static void
sendwindow(void)
{
struct winsize ws;
char obuf[4 + sizeof (struct winsize)];
obuf[0] = 0377;
obuf[1] = 0377;
obuf[2] = 's';
obuf[3] = 's';
ws.ws_row = htons(winsize.ws_row);
ws.ws_col = htons(winsize.ws_col);
ws.ws_xpixel = htons(winsize.ws_xpixel);
ws.ws_ypixel = htons(winsize.ws_ypixel);
bcopy(&ws, obuf + 4, sizeof(ws));
(void)write(rem, obuf, sizeof(obuf));
}
/*
* reader: read from remote: line -> 1
*/
#define READING 1
#define WRITING 2
static jmp_buf rcvtop;
static int rcvcnt, rcvstate;
static pid_t ppid;
static char rcvbuf[8 * 1024];
/* ARGSUSED */
static void
oob(int signo __unused)
{
struct termios tty;
int atmark, n, rcvd;
char waste[BUFSIZ], mark;
rcvd = 0;
while (recv(rem, &mark, 1, MSG_OOB) < 0) {
switch (errno) {
case EWOULDBLOCK:
/*
* Urgent data not here yet. It may not be possible
* to send it yet if we are blocked for output and
* our input buffer is full.
*/
if (rcvcnt < (int)sizeof(rcvbuf)) {
n = read(rem, rcvbuf + rcvcnt,
sizeof(rcvbuf) - rcvcnt);
if (n <= 0)
return;
rcvd += n;
} else {
n = read(rem, waste, sizeof(waste));
if (n <= 0)
return;
}
continue;
default:
return;
}
}
if (mark & TIOCPKT_WINDOW) {
/* Let server know about window size changes */
(void)kill(ppid, SIGUSR1);
}
if (!eight && (mark & TIOCPKT_NOSTOP)) {
(void)tcgetattr(0, &tty);
tty.c_iflag &= ~IXON;
(void)tcsetattr(0, TCSANOW, &tty);
}
if (!eight && (mark & TIOCPKT_DOSTOP)) {
(void)tcgetattr(0, &tty);
tty.c_iflag |= (deftty.c_iflag & IXON);
(void)tcsetattr(0, TCSANOW, &tty);
}
if (mark & TIOCPKT_FLUSHWRITE) {
(void)tcflush(1, TCIOFLUSH);
for (;;) {
if (ioctl(rem, SIOCATMARK, &atmark) < 0) {
warn("ioctl");
break;
}
if (atmark)
break;
n = read(rem, waste, sizeof (waste));
if (n <= 0)
break;
}
/*
* Don't want any pending data to be output, so clear the recv
* buffer. If we were hanging on a write when interrupted,
* don't want it to restart. If we were reading, restart
* anyway.
*/
rcvcnt = 0;
longjmp(rcvtop, 1);
}
/* oob does not do FLUSHREAD (alas!) */
/*
* If we filled the receive buffer while a read was pending, longjmp
* to the top to restart appropriately. Don't abort a pending write,
* however, or we won't know how much was written.
*/
if (rcvd && rcvstate == READING)
longjmp(rcvtop, 1);
}
/* reader: read from remote: line -> 1 */
static int
reader(int omask)
{
int n, remaining;
char *bufp;
pid_t pid;
pid = getpid();
(void)signal(SIGTTOU, SIG_IGN);
(void)signal(SIGURG, oob);
(void)signal(SIGUSR1, oob); /* When propogating SIGURG from parent */
ppid = getppid();
(void)fcntl(rem, F_SETOWN, pid);
(void)setjmp(rcvtop);
(void)sigsetmask(omask);
bufp = rcvbuf;
for (;;) {
while ((remaining = rcvcnt - (bufp - rcvbuf)) > 0) {
rcvstate = WRITING;
n = write(STDOUT_FILENO, bufp, remaining);
if (n < 0) {
if (errno != EINTR)
return (-1);
continue;
}
bufp += n;
}
bufp = rcvbuf;
rcvcnt = 0;
rcvstate = READING;
rcvcnt = read(rem, rcvbuf, sizeof (rcvbuf));
if (rcvcnt == 0)
return (0);
if (rcvcnt < 0) {
if (errno == EINTR)
continue;
warn("read");
return (-1);
}
}
}
static void
mode(int f)
{
struct termios tty;
switch (f) {
case 0:
(void)tcsetattr(0, TCSANOW, &deftty);
break;
case 1:
(void)tcgetattr(0, &deftty);
tty = deftty;
/* This is loosely derived from sys/kern/tty_compat.c. */
tty.c_lflag &= ~(ECHO|ICANON|ISIG|IEXTEN);
tty.c_iflag &= ~ICRNL;
tty.c_oflag &= ~OPOST;
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 0;
if (eight) {
tty.c_iflag &= IXOFF;
tty.c_cflag &= ~(CSIZE|PARENB);
tty.c_cflag |= CS8;
}
(void)tcsetattr(0, TCSANOW, &tty);
break;
default:
return;
}
}
/* ARGSUSED */
static void
lostpeer(int signo __unused)
{
(void)signal(SIGPIPE, SIG_IGN);
msg("\007connection closed");
done(1);
}
/* copy SIGURGs to the child process via SIGUSR1. */
/* ARGSUSED */
static void
copytochild(int signo __unused)
{
(void)kill(child, SIGUSR1);
}
static void
msg(const char *str)
{
(void)fprintf(stderr, "rlogin: %s\r\n", str);
}
static void
usage(void)
{
(void)fprintf(stderr,
"usage: rlogin [-46%s]%s[-e char] [-i localname] [-l username] host\n",
"8DEd", " ");
exit(1);
}
static u_int
getescape(const char *p)
{
long val;
size_t len;
if ((len = strlen(p)) == 1) /* use any single char, including '\' */
return ((u_int)*p);
/* otherwise, \nnn */
if (*p == '\\' && len >= 2 && len <= 4) {
val = strtol(++p, NULL, 8);
for (;;) {
if (!*++p)
return ((u_int)val);
if (*p < '0' || *p > '8')
break;
}
}
msg("illegal option value -- e");
usage();
/* NOTREACHED */
}

12
usr.bin/rsh/Makefile
View File

@ -1,12 +0,0 @@
# @(#)Makefile 8.1 (Berkeley) 7/19/93
# $FreeBSD$
PROG= rsh
CFLAGS+=-I${SRCTOP}/libexec/rlogind
PACKAGE=rcmds
BINOWN= root
BINMODE=4555
.include <bsd.prog.mk>

19
usr.bin/rsh/Makefile.depend
View File

@ -1,19 +0,0 @@
# $FreeBSD$
# Autogenerated - do NOT edit!
DIRDEPS = \
gnu/lib/csu \
gnu/lib/libgcc \
include \
include/xlocale \
lib/${CSU_DIR} \
lib/libc \
lib/libcompiler_rt \
lib/libutil \
.include <dirdeps.mk>
.if ${DEP_RELDIR} == ${_DEP_RELDIR}
# local dependencies - needed for -jN in clean tree
.endif

191
usr.bin/rsh/rsh.1
View File

@ -1,191 +0,0 @@
.\" Copyright (c) 1983, 1990, 1993
.\" The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
.\"
.\" @(#)rsh.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$
.\"
.Dd July 3, 2017
.Dt RSH 1
.Os
.Sh NAME
.Nm rsh
.Nd remote shell
.Sh SYNOPSIS
.Nm
.Op Fl 46dnN
.Op Fl l Ar username
.Op Fl t Ar timeout
.Ar host
.Op command
.Sh DEPRECATION NOTICE
.Nm
is deprecated and will be removed from future versions of the
.Fx
base system.
If
.Nm
is still required, it can be installed from ports or packages
(net/bsdrcmds).
.Sh DESCRIPTION
The
.Nm
utility executes
.Ar command
on
.Ar host .
.Pp
The
.Nm
utility copies its standard input to the remote command, the standard
output of the remote command to its standard output, and the
standard error of the remote command to its standard error.
Interrupt, quit and terminate signals are propagated to the remote
command;
.Nm
normally terminates when the remote command does.
The options are as follows:
.Bl -tag -width flag
.It Fl 4
Use IPv4 addresses only.
.It Fl 6
Use IPv6 addresses only.
.It Fl d
Turn on socket debugging (using
.Xr setsockopt 2 )
on the
.Tn TCP
sockets used for communication with the remote host.
.It Fl l Ar username
Allow the remote
.Ar username
to be specified.
By default, the remote username is the same as the local username.
Authorization is determined
as in
.Xr rlogin 1 .
.It Fl N
Opposite to
.Fl n
option: do not send the "end of file" (EOF) indication for input stream
to the remote host. This option makes the
.Nm
utility compatible with protocol implementations confused by receiving
EOF, like some Cisco IOS versions. Disables
.Fl n .
.It Fl n
Redirect input from the special device
.Pa /dev/null
(see the
.Sx BUGS
section of this manual page). Disables
.Fl N .
.It Fl t Ar timeout
Allow a
.Ar timeout
to be specified (in seconds).
If no
data is sent or received in this time,
.Nm
will exit.
.El
.Pp
If no
.Ar command
is specified, you will be logged in on the remote host using
.Xr rlogin 1 .
.Pp
Shell metacharacters which are not quoted are interpreted on local machine,
while quoted metacharacters are interpreted on the remote machine.
For example, the command
.Pp
.Dl rsh otherhost cat remotefile >> localfile
.Pp
appends the remote file
.Ar remotefile
to the local file
.Ar localfile ,
while
.Pp
.Dl rsh otherhost cat remotefile \&">>\&" other_remotefile
.Pp
appends
.Ar remotefile
to
.Ar other_remotefile .
.\" .Pp
.\" Many sites specify a large number of host names as commands in the
.\" directory /usr/hosts.
.\" If this directory is included in your search path, you can use the
.\" shorthand ``host command'' for the longer form ``rsh host command''.
.Sh FILES
.Bl -tag -width /etc/hosts -compact
.It Pa /etc/hosts
.El
.Sh SEE ALSO
.Xr rlogin 1 ,
.Xr setsockopt 2 ,
.Xr rcmd 3 ,
.Xr ruserok 3 ,
.Xr hosts 5 ,
.Xr hosts.equiv 5 ,
.Xr rlogind 8 ,
.Xr rshd 8
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.2 .
.Sh BUGS
If you are using
.Xr csh 1
and put a
.Nm
in the background without redirecting its input away from the terminal,
it will block even if no reads are posted by the remote command.
If no input is desired you should redirect the input of
.Nm
to
.Pa /dev/null
using the
.Fl n
option.
.Pp
You cannot run an interactive command
(like
.Xr ee 1
or
.Xr vi 1 )
using
.Nm ;
use
.Xr rlogin 1
instead.
.Pp
Stop signals stop the local
.Nm
process only; this is arguably wrong, but currently hard to fix for reasons
too complicated to explain here.

381
usr.bin/rsh/rsh.c
View File

@ -1,381 +0,0 @@
/*-
* Copyright (c) 1983, 1990, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* Portions of this software were developed for the FreeBSD Project by
* ThinkSec AS and NAI Labs, the Security Research Division of Network
* Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
* ("CBOSS"), as part of the DARPA CHATS research program.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1983, 1990, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#if 0
#ifndef lint
static const char sccsid[] = "From: @(#)rsh.c 8.3 (Berkeley) 4/6/94";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/signal.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netdb.h>
#include <err.h>
#include <errno.h>
#include <libutil.h>
#include <paths.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
/*
* rsh - remote shell
*/
static int rfd2;
static int family = PF_UNSPEC;
static char rlogin[] = "rlogin";
void connect_timeout(int);
char *copyargs(char * const *);
void sendsig(int);
void talk(int, int, long, pid_t, int, int);
void usage(void);
int
main(int argc, char *argv[])
{
struct passwd const *pw;
struct servent const *sp;
long omask;
int argoff, asrsh, ch, dflag, nflag, Nflag, one, rem;
pid_t pid = 0;
uid_t uid;
char *args, *host, *p, *user;
int timeout = 0;
argoff = asrsh = dflag = nflag = Nflag = 0;
one = 1;
host = user = NULL;
/* if called as something other than "rsh", use it as the host name */
if ((p = strrchr(argv[0], '/')))
++p;
else
p = argv[0];
if (strcmp(p, "rsh"))
host = p;
else
asrsh = 1;
/* handle "rsh host flags" */
if (!host && argc > 2 && argv[1][0] != '-') {
host = argv[1];
argoff = 1;
}
#define OPTIONS "468LNde:l:nt:w"
while ((ch = getopt(argc - argoff, argv + argoff, OPTIONS)) != -1)
switch(ch) {
case '4':
family = PF_INET;
break;
case '6':
family = PF_INET6;
break;
case 'N':
Nflag = 1;
nflag = 0;
break;
case 'L': /* -8Lew are ignored to allow rlogin aliases */
case 'e':
case 'w':
case '8':
break;
case 'd':
dflag = 1;
break;
case 'l':
user = optarg;
break;
case 'n':
nflag = 1;
Nflag = 0;
break;
case 't':
timeout = atoi(optarg);
break;
case '?':
default:
usage();
}
optind += argoff;
/* if haven't gotten a host yet, do so */
if (!host && !(host = argv[optind++]))
usage();
/* if no further arguments, must have been called as rlogin. */
if (!argv[optind]) {
if (asrsh)
*argv = rlogin;
execv(_PATH_RLOGIN, argv);
err(1, "can't exec %s", _PATH_RLOGIN);
}
argc -= optind;
argv += optind;
if (!(pw = getpwuid(uid = getuid())))
errx(1, "unknown user id");
if (!user)
user = pw->pw_name;
args = copyargs(argv);
sp = NULL;
if (sp == NULL)
sp = getservbyname("shell", "tcp");
if (sp == NULL)
errx(1, "shell/tcp: unknown service");
if (timeout) {
signal(SIGALRM, connect_timeout);
alarm(timeout);
}
rem = rcmd_af(&host, sp->s_port, pw->pw_name, user, args, &rfd2,
family);
if (timeout) {
signal(SIGALRM, SIG_DFL);
alarm(0);
}
if (rem < 0)
exit(1);
if (rfd2 < 0)
errx(1, "can't establish stderr");
if (dflag) {
if (setsockopt(rem, SOL_SOCKET, SO_DEBUG, &one,
sizeof(one)) < 0)
warn("setsockopt");
if (setsockopt(rfd2, SOL_SOCKET, SO_DEBUG, &one,
sizeof(one)) < 0)
warn("setsockopt");
}
(void)setuid(uid);
omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGTERM));
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, sendsig);
if (signal(SIGQUIT, SIG_IGN) != SIG_IGN)
(void)signal(SIGQUIT, sendsig);
if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
(void)signal(SIGTERM, sendsig);
if (!nflag) {
pid = fork();
if (pid < 0)
err(1, "fork");
}
else
(void)shutdown(rem, SHUT_WR);
(void)ioctl(rfd2, FIONBIO, &one);
(void)ioctl(rem, FIONBIO, &one);
talk(nflag, Nflag, omask, pid, rem, timeout);
if (!nflag)
(void)kill(pid, SIGKILL);
exit(0);
}
void
talk(int nflag, int Nflag, long omask, pid_t pid, int rem, int timeout)
{
int cc, wc;
fd_set readfrom, ready, rembits;
char buf[BUFSIZ];
const char *bp;
struct timeval tvtimeout;
int nfds, srval;
if (!nflag && pid == 0) {
(void)close(rfd2);
reread: errno = 0;
if ((cc = read(0, buf, sizeof buf)) <= 0)
goto done;
bp = buf;
rewrite:
if (rem >= FD_SETSIZE)
errx(1, "descriptor too big");
FD_ZERO(&rembits);
FD_SET(rem, &rembits);
nfds = rem + 1;
if (select(nfds, 0, &rembits, 0, 0) < 0) {
if (errno != EINTR)
err(1, "select");
goto rewrite;
}
if (!FD_ISSET(rem, &rembits))
goto rewrite;
wc = write(rem, bp, cc);
if (wc < 0) {
if (errno == EWOULDBLOCK)
goto rewrite;
goto done;
}
bp += wc;
cc -= wc;
if (cc == 0)
goto reread;
goto rewrite;
done: if (!Nflag)
(void)shutdown(rem, SHUT_WR);
exit(0);
}
tvtimeout.tv_sec = timeout;
tvtimeout.tv_usec = 0;
(void)sigsetmask(omask);
if (rfd2 >= FD_SETSIZE || rem >= FD_SETSIZE)
errx(1, "descriptor too big");
FD_ZERO(&readfrom);
FD_SET(rfd2, &readfrom);
FD_SET(rem, &readfrom);
nfds = MAX(rfd2+1, rem+1);
do {
ready = readfrom;
if (timeout) {
srval = select(nfds, &ready, 0, 0, &tvtimeout);
} else {
srval = select(nfds, &ready, 0, 0, 0);
}
if (srval < 0) {
if (errno != EINTR)
err(1, "select");
continue;
}
if (srval == 0)
errx(1, "timeout reached (%d seconds)", timeout);
if (FD_ISSET(rfd2, &ready)) {
errno = 0;
cc = read(rfd2, buf, sizeof buf);
if (cc <= 0) {
if (errno != EWOULDBLOCK)
FD_CLR(rfd2, &readfrom);
} else
(void)write(STDERR_FILENO, buf, cc);
}
if (FD_ISSET(rem, &ready)) {
errno = 0;
cc = read(rem, buf, sizeof buf);
if (cc <= 0) {
if (errno != EWOULDBLOCK)
FD_CLR(rem, &readfrom);
} else
(void)write(STDOUT_FILENO, buf, cc);
}
} while (FD_ISSET(rfd2, &readfrom) || FD_ISSET(rem, &readfrom));
}
void
connect_timeout(int sig __unused)
{
char message[] = "timeout reached before connection completed.\n";
write(STDERR_FILENO, message, sizeof(message) - 1);
_exit(1);
}
void
sendsig(int sig)
{
char signo;
signo = sig;
(void)write(rfd2, &signo, 1);
}
char *
copyargs(char * const *argv)
{
int cc;
char *args, *p;
char * const *ap;
cc = 0;
for (ap = argv; *ap; ++ap)
cc += strlen(*ap) + 1;
if (!(args = malloc((u_int)cc)))
err(1, NULL);
for (p = args, ap = argv; *ap; ++ap) {
(void)strcpy(p, *ap);
for (p = strcpy(p, *ap); *p; ++p);
if (ap[1])
*p++ = ' ';
}
return (args);
}
void
usage(void)
{
(void)fprintf(stderr,
"usage: rsh [-46Ndn] [-l username] [-t timeout] host [command]\n");
exit(1);
}