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Import NetBSD inetd(8)

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Do not start it by default just yet.

Change-Id: Id8d2dd33eb67ae74b3ef3060638e20c781e8e37d
This commit is contained in:
David van Moolenbroek 2017-02-15 20:53:10 +00:00
parent e044bafaad
commit c3b6f8f269
15 changed files with 3410 additions and 3 deletions
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3
distrib/sets/lists/minix-base/mi
View File

@ -102,6 +102,7 @@
./etc/hostname.file minix-base
./etc/hosts minix-base
./etc/inet.conf minix-base obsolete
./etc/inetd.conf minix-base
./etc/kyua minix-tests kyua
./etc/man.conf minix-base
./etc/master.passwd minix-base
@ -135,6 +136,7 @@
./etc/rc.d/bootconf.sh minix-base
./etc/rc.d/fsck minix-base
./etc/rc.d/ftpd minix-base
./etc/rc.d/inetd minix-base
./etc/rc.d/ipfilter minix-base
./etc/rc.d/ipsec minix-base
./etc/rc.d/local minix-base
@ -1029,6 +1031,7 @@
./usr/sbin/groupinfo minix-base
./usr/sbin/groupmod minix-base
./usr/sbin/i2cscan minix-base
./usr/sbin/inetd minix-base
./usr/sbin/installboot_nbsd minix-base
./usr/sbin/kernel minix-base
./usr/sbin/link minix-base

1
distrib/sets/lists/minix-debug/mi
View File

@ -601,6 +601,7 @@
./usr/libdata/debug/usr/sbin/diskctl.debug minix-debug debug
./usr/libdata/debug/usr/sbin/fbdctl.debug minix-debug debug
./usr/libdata/debug/usr/sbin/i2cscan.debug minix-debug debug
./usr/libdata/debug/usr/sbin/inetd.debug minix-debug debug
./usr/libdata/debug/usr/sbin/installboot_nbsd.debug minix-debug debug
./usr/libdata/debug/usr/sbin/kernel.debug minix-debug debug
./usr/libdata/debug/usr/sbin/link.debug minix-debug debug

2
distrib/sets/lists/minix-man/mi
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@ -3297,6 +3297,7 @@
./usr/man/man5/hosts_options.5 minix-man
./usr/man/man5/http_status.5 minix-man obsolete
./usr/man/man5/httpd.conf.5 minix-man obsolete
./usr/man/man5/inetd.conf.5 minix-man
./usr/man/man5/info.5 minix-man
./usr/man/man5/keymap.5 minix-man
./usr/man/man5/kyua-tester-list.5 minix-man kyua
@ -3415,6 +3416,7 @@
./usr/man/man8/ifconfig.8 minix-man
./usr/man/man8/in.httpd.8 minix-man obsolete
./usr/man/man8/inet.8 minix-man obsolete
./usr/man/man8/inetd.8 minix-man
./usr/man/man8/init.8 minix-man
./usr/man/man8/installboot_nbsd.8 minix-man
./usr/man/man8/intr.8 minix-man

1
etc/Makefile
View File

@ -321,6 +321,7 @@ install-etc-files: .PHONY .MAKE check_DESTDIR MAKEDEV
${BINOWN} ${BINGRP} ${BINMODE} ${NETBSDSRCDIR}/etc/ ${DESTDIR}/etc/ group \
${BINOWN} ${BINGRP} ${BINMODE} ${NETBSDSRCDIR}/etc/ ${DESTDIR}/etc/ hostname.file \
${BINOWN} ${BINGRP} ${BINMODE} ${NETBSDSRCDIR}/etc/ ${DESTDIR}/etc/ hosts \
${BINOWN} ${BINGRP} ${BINMODE} ${NETBSDSRCDIR}/etc/ ${DESTDIR}/etc/ inetd.conf \
${BINOWN} ${BINGRP} ${BINMODE} ${NETBSDSRCDIR}/etc/ ${DESTDIR}/etc/ mk.conf \
${BINOWN} ${BINGRP} ${BINMODE} ${NETBSDSRCDIR}/etc/ ${DESTDIR}/etc/ motd \
${BINOWN} ${BINGRP} ${BINMODE} ${NETBSDSRCDIR}/etc/ ${DESTDIR}/etc/ nsswitch.conf \

2
etc/defaults/minix.rc.conf
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@ -2,7 +2,7 @@
# Override settings in NetBSD's default rc.conf with different default settings
# for MINIX here, typically to disable scripts that NetBSD enables by default.
#(nothing yet)
inetd=NO
# Where to find servers/drivers binaries
PKG_SERVICE_DIR=/usr/pkg/service

86
etc/inetd.conf Normal file
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@ -0,0 +1,86 @@
# $NetBSD: inetd.conf,v 1.58 2007/10/16 02:47:14 tls Exp $
#
# Internet server configuration database
#
# @(#)inetd.conf 8.2 (Berkeley) 3/18/94
#
#http stream tcp nowait:600 _httpd /usr/libexec/httpd httpd /var/www
#http stream tcp6 nowait:600 _httpd /usr/libexec/httpd httpd /var/www
#ftp stream tcp nowait root /usr/libexec/ftpd ftpd -ll
#ftp stream tcp6 nowait root /usr/libexec/ftpd ftpd -ll
#telnet stream tcp nowait root /usr/libexec/telnetd telnetd -a valid
#telnet stream tcp6 nowait root /usr/libexec/telnetd telnetd -a valid
#shell stream tcp nowait root /usr/libexec/rshd rshd -L
#shell stream tcp6 nowait root /usr/libexec/rshd rshd -L
#login stream tcp nowait root /usr/libexec/rlogind rlogind -L
#login stream tcp6 nowait root /usr/libexec/rlogind rlogind -L
#exec stream tcp nowait root /usr/libexec/rexecd rexecd
#exec stream tcp6 nowait root /usr/libexec/rexecd rexecd
#finger stream tcp nowait nobody /usr/libexec/fingerd fingerd -lsmu
#finger stream tcp6 nowait nobody /usr/libexec/fingerd fingerd -lsmu
#ident stream tcp nowait nobody /usr/libexec/identd identd -l -o OTHER -e -N
#ident stream tcp6 nowait nobody /usr/libexec/identd identd -l -o OTHER -e -N
#tftp dgram udp wait root /usr/libexec/tftpd tftpd -l -s /tftpboot
#tftp dgram udp6 wait root /usr/libexec/tftpd tftpd -l -s /tftpboot
#comsat dgram udp wait root /usr/libexec/comsat comsat
#comsat dgram udp6 wait root /usr/libexec/comsat comsat
#ntalk dgram udp wait nobody:tty /usr/libexec/ntalkd ntalkd
#bootps dgram udp wait root /usr/sbin/bootpd bootpd
#
# Games
#
#hunt dgram udp wait nobody /usr/games/huntd huntd
#
# Internal services
#
#tcpmux stream tcp nowait root internal
#echo stream tcp nowait nobody internal
#echo stream tcp6 nowait nobody internal
#discard stream tcp nowait nobody internal
#discard stream tcp6 nowait nobody internal
#chargen stream tcp nowait nobody internal
#chargen stream tcp6 nowait nobody internal
#daytime stream tcp nowait nobody internal
#daytime stream tcp6 nowait nobody internal
#time stream tcp nowait nobody internal
#time stream tcp6 nowait nobody internal
#echo dgram udp wait nobody internal
#echo dgram udp6 wait nobody internal
#discard dgram udp wait nobody internal
#discard dgram udp6 wait nobody internal
#chargen dgram udp wait nobody internal
#chargen dgram udp6 wait nobody internal
#daytime dgram udp wait nobody internal
#daytime dgram udp6 wait nobody internal
#time dgram udp wait nobody internal
#time dgram udp6 wait nobody internal
#qotd stream tcp nowait nobody /usr/games/fortune fortune
#qotd stream tcp6 nowait nobody /usr/games/fortune fortune
#
# Kerberos authenticated services
#
#klogin stream tcp nowait root /usr/libexec/rlogind rlogind -k
#eklogin stream tcp nowait root /usr/libexec/rlogind rlogind -k -x
#kshell stream tcp nowait root /usr/libexec/rshd rshd -k
#
# Services run ONLY on the Kerberos server
#
#kerberos-adm stream tcp nowait root /usr/libexec/kadmind kadmind
#kerberos-adm stream tcp6 nowait root /usr/libexec/kadmind kadmind
#kpasswd dgram udp wait root /usr/libexec/kpasswdd kpasswdd
#kpasswd dgram udp6 wait root /usr/libexec/kpasswdd kpasswdd
#
# The hprop service is run on slave KDCs to receive the database from
# the master KDC.
#hprop stream tcp nowait root /usr/libexec/hpropd hpropd
#hprop stream tcp6 nowait root /usr/libexec/hpropd hpropd
#
# RPC based services
#
#rstatd/1-3 dgram rpc/udp wait:100 nobody:kmem /usr/libexec/rpc.rstatd rpc.rstatd
#rstatd/1-3 dgram rpc/udp6 wait:100 nobody:kmem /usr/libexec/rpc.rstatd rpc.rstatd
#rusersd/2-3 dgram rpc/udp wait:100 nobody /usr/libexec/rpc.rusersd rpc.rusersd
#rusersd/2-3 dgram rpc/udp6 wait:100 nobody /usr/libexec/rpc.rusersd rpc.rusersd
#walld/1 dgram rpc/udp wait nobody:tty /usr/libexec/rpc.rwalld rpc.rwalld
#sprayd/1 dgram rpc/udp wait nobody /usr/libexec/rpc.sprayd rpc.sprayd
#rquotad/1-2 dgram rpc/udp wait root /usr/libexec/rpc.rquotad rpc.rquotad

2
etc/rc.d/Makefile
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@ -34,7 +34,7 @@ CONFIGFILES=\
fsck ftpd \
\
\
ipfilter ipsec \
inetd ipfilter ipsec \
\
\
local \

20
etc/rc.d/inetd Executable file
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@ -0,0 +1,20 @@
#!/bin/sh
#
# $NetBSD: inetd,v 1.7 2004/08/13 18:08:03 mycroft Exp $
#
# PROVIDE: inetd
# REQUIRE: DAEMON LOGIN
# KEYWORD: shutdown
$_rc_subr_loaded . /etc/rc.subr
name="inetd"
rcvar=$name
command="/usr/sbin/${name}"
pidfile="/var/run/${name}.pid"
required_files="/etc/${name}.conf"
extra_commands="reload"
load_rc_config $name
run_rc_command "$1"

2
usr.sbin/Makefile
View File

@ -11,7 +11,7 @@ SUBDIR= arp \
\
\
\
i2cscan installboot \
i2cscan inetd installboot \
\
\
link \

32
usr.sbin/inetd/Makefile Normal file
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@ -0,0 +1,32 @@
# from: @(#)Makefile 8.1 (Berkeley) 6/6/93
# $NetBSD: Makefile,v 1.23 2009/10/22 22:50:35 tsarna Exp $
.include <bsd.own.mk>
USE_FORT?= yes # network server
PROG= inetd
SRCS= inetd.c
MAN= inetd.8
MLINKS= inetd.8 inetd.conf.5
CPPFLAGS+=-DLIBWRAP
# Use LIBWRAP_INTERNAL for libwrap checking of inetd's `internal' services.
#CPPFLAGS+=-DLIBWRAP_INTERNAL
LDADD+= -lwrap -lutil
DPADD+= ${LIBWRAP} ${LIBUTIL}
.if (${USE_INET6} != "no")
CPPFLAGS+=-DINET6
.endif
.if !defined(__MINIX)
CPPFLAGS+=-DIPSEC
SRCS+= ipsec.c
LDADD+= -lipsec
DPADD+= ${LIBIPSEC}
.else # defined(__MINIX)
CPPFLAGS+=-DNO_RPC
.endif # defined(__MINIX)
.include <bsd.prog.mk>

650
usr.sbin/inetd/inetd.8 Normal file
View File

@ -0,0 +1,650 @@
.\" $NetBSD: inetd.8,v 1.57 2011/04/25 22:12:05 wiz Exp $
.\"
.\" Copyright (c) 1998 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
.\" NASA Ames Research Center.
.\"
.\" 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
.\"
.\" Copyright (c) 1985, 1991 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.
.\"
.\" from: @(#)inetd.8 8.4 (Berkeley) 6/1/94
.\"
.Dd August 27, 2008
.Dt INETD 8
.Os
.Sh NAME
.Nm inetd ,
.Nm inetd.conf
.Nd internet
.Dq super-server
.Sh SYNOPSIS
.Nm
.Op Fl d
.Op Fl l
.Op Ar configuration file
.Sh DESCRIPTION
.Nm
should be run at boot time by
.Pa /etc/rc
(see
.Xr rc 8 ) .
It then opens sockets according to its configuration and listens
for connections.
When a connection is found on one of its sockets, it decides what
service the socket corresponds to, and invokes a program to service
the request.
After the program is finished, it continues to listen on the socket
(except in some cases which will be described below).
Essentially,
.Nm
allows running one daemon to invoke several others,
reducing load on the system.
.Pp
The options available for
.Nm :
.Bl -tag -width Ds
.It Fl d
Turns on debugging.
.It Fl l
Turns on libwrap connection logging.
.El
.Pp
Upon execution,
.Nm
reads its configuration information from a configuration
file which, by default, is
.Pa /etc/inetd.conf .
The path given for this configuration file must be absolute, unless
the
.Fl d
option is also given on the command line.
There must be an entry for each field of the configuration
file, with entries for each field separated by a tab or
a space.
Comments are denoted by a ``#'' at the beginning of a line.
There must be an entry for each field (except for one
special case, described below).
The fields of the configuration file are as follows:
.Pp
.Bd -unfilled -offset indent -compact
[addr:]service-name
socket-type[:accept_filter]
protocol[,sndbuf=size][,rcvbuf=size]
wait/nowait[:max]
user[:group]
server-program
server program arguments
.Ed
.Pp
To specify an
.Em Sun-RPC
based service, the entry would contain these fields:
.Pp
.Bd -unfilled -offset indent -compact
service-name/version
socket-type
rpc/protocol[,sndbuf=size][,rcvbuf=size]
wait/nowait[:max]
user[:group]
server-program
server program arguments
.Ed
.Pp
To specify a UNIX-domain (local) socket, the entry would contain
these fields:
.Pp
.Bd -unfilled -offset indent -compact
path
socket-type
unix[,sndbuf=size][,rcvbuf=size]
wait/nowait[:max]
user[:group]
server-program
server program arguments
.Ed
.Pp
For Internet services, the first field of the line may also have a host
address specifier prefixed to it, separated from the service name by a colon.
If this is done, the string before the colon in the first field
indicates what local address
.Nm
should use when listening for that service, or the single character
.Dq \&*
to indicate
.Dv INADDR_ANY ,
meaning
.Sq all local addresses .
To avoid repeating an address that occurs frequently, a line with a
host address specifier and colon, but no further fields, causes the
host address specifier to be remembered and used for all further lines
with no explicit host specifier (until another such line or the end of
the file).
A line
.Dl *:
is implicitly provided at the top of the file; thus, traditional
configuration files (which have no host address specifiers) will be
interpreted in the traditional manner, with all services listened for
on all local addresses.
.Pp
The
.Em service-name
entry is the name of a valid service in
the file
.Pa /etc/services .
For
.Dq internal
services (discussed below), the service
name
.Em must
be the official name of the service (that is, the first entry in
.Pa /etc/services ) .
When used to specify a
.Em Sun-RPC
based service, this field is a valid RPC service name in
the file
.Pa /etc/rpc .
The part on the right of the
.Dq /
is the RPC version number.
This can simply be a single numeric argument or a range of versions.
A range is bounded by the low version to the high version \-
.Dq rusers/1-3 .
.Pp
The
.Em socket-type
should be one of
.Dq stream ,
.Dq dgram ,
.Dq raw ,
.Dq rdm ,
or
.Dq seqpacket ,
depending on whether the socket is a stream, datagram, raw,
reliably delivered message, or sequenced packet socket.
.Pp
Optionally, an
.Xr accept_filter 9
can be specified by appending a colon to the socket-type, followed by
the name of the desired accept filter.
In this case
.Nm
will not see new connections for the specified service until the accept
filter decides they are ready to be handled.
.Pp
The
.Em protocol
must be a valid protocol as given in
.Pa /etc/protocols
or the string
.Dq unix .
Examples might be
.Dq tcp
and
.Dq udp .
Rpc based services are specified with the
.Dq rpc/tcp
or
.Dq rpc/udp
service type.
.Dq tcp
and
.Dq udp
will be recognized as
.Dq TCP or UDP over default IP version .
It is currently IPv4, but in the future it will be IPv6.
If you need to specify IPv4 or IPv6 explicitly, use something like
.Dq tcp4
or
.Dq udp6 .
If you would like to enable special support for
.Xr faithd 8 ,
prepend a keyword
.Dq faith
into
.Em protocol ,
like
.Dq faith/tcp6 .
.Pp
In addition to the protocol, the configuration file may specify the
send and receive socket buffer sizes for the listening socket.
This is especially useful for
.Tn TCP
as the window scale factor, which is based on the receive socket
buffer size, is advertised when the connection handshake occurs,
thus the socket buffer size for the server must be set on the listen socket.
By increasing the socket buffer sizes, better
.Tn TCP
performance may be realized in some situations.
The socket buffer sizes are specified by appending their values to
the protocol specification as follows:
.Bd -literal -offset indent
tcp,rcvbuf=16384
tcp,sndbuf=64k
tcp,rcvbuf=64k,sndbuf=1m
.Ed
.Pp
A literal value may be specified, or modified using
.Sq k
to indicate kilobytes or
.Sq m
to indicate megabytes.
Socket buffer sizes may be specified for all
services and protocols except for tcpmux services.
.Pp
The
.Em wait/nowait
entry is used to tell
.Nm
if it should wait for the server program to return,
or continue processing connections on the socket.
If a datagram server connects
to its peer, freeing the socket so
.Nm
can receive further messages on the socket, it is said to be
a
.Dq multi-threaded
server, and should use the
.Dq nowait
entry.
For datagram servers which process all incoming datagrams
on a socket and eventually time out, the server is said to be
.Dq single-threaded
and should use a
.Dq wait
entry.
.Xr comsat 8
.Pq Xr biff 1
and
.Xr ntalkd 8
are both examples of the latter type of
datagram server.
.Xr tftpd 8
is an exception; it is a datagram server that establishes pseudo-connections.
It must be listed as
.Dq wait
in order to avoid a race;
the server reads the first packet, creates a new socket,
and then forks and exits to allow
.Nm
to check for new service requests to spawn new servers.
The optional
.Dq max
suffix (separated from
.Dq wait
or
.Dq nowait
by a dot or a colon) specifies the maximum number of server instances that may
be spawned from
.Nm
within an interval of 60 seconds.
When omitted,
.Dq max
defaults to 40.
If it reaches this maximum spawn rate,
.Nm
will log the problem (via the syslogger using the
.Dv LOG_DAEMON
facility and
.Dv LOG_ERR
level)
and stop handling the specific service for ten minutes.
.Pp
Stream servers are usually marked as
.Dq nowait
but if a single server process is to handle multiple connections, it may be
marked as
.Dq wait .
The master socket will then be passed as fd 0 to the server, which will then
need to accept the incoming connection.
The server should eventually time
out and exit when no more connections are active.
.Nm
will continue to
listen on the master socket for connections, so the server should not close
it when it exits.
.Xr identd 8
is usually the only stream server marked as wait.
.Pp
The
.Em user
entry should contain the user name of the user as whom the server should run.
This allows for servers to be given less permission than root.
Optionally, a group can be specified by appending a colon to the user name,
followed by the group name (it is possible to use a dot (``.'') in lieu of a
colon, however this feature is provided only for backward compatibility).
This allows for servers to run with a different (primary) group id than
specified in the password file.
If a group is specified and
.Em user
is not root, the supplementary groups associated with that user will still be
set.
.Pp
The
.Em server-program
entry should contain the pathname of the program which is to be
executed by
.Nm
when a request is found on its socket.
If
.Nm
provides this service internally, this entry should
be
.Dq internal .
.Pp
The
.Em server program arguments
should be just as arguments
normally are, starting with argv[0], which is the name of
the program.
If the service is provided internally, the
word
.Dq internal
should take the place of this entry.
It is possible to quote an argument using either single or double quotes.
This allows you to have, e.g., spaces in paths and parameters.
.Ss Internal Services
.Nm
provides several
.Qq trivial
services internally by use of routines within itself.
These services are
.Qq echo ,
.Qq discard ,
.Qq chargen
(character generator),
.Qq daytime
(human readable time), and
.Qq time
(machine readable time,
in the form of the number of seconds since midnight, January 1, 1900 GMT).
For details of these services, consult the appropriate
.Tn RFC .
.Pp
TCP services without official port numbers can be handled with the
RFC1078-based tcpmux internal service.
TCPmux listens on port 1 for requests.
When a connection is made from a foreign host, the service name
requested is passed to TCPmux, which performs a lookup in the
service name table provided by
.Pa /etc/inetd.conf
and returns the proper entry for the service.
TCPmux returns a negative reply if the service doesn't exist,
otherwise the invoked server is expected to return the positive
reply if the service type in
.Pa /etc/inetd.conf
file has the prefix
.Qq tcpmux/ .
If the service type has the
prefix
.Qq tcpmux/+ ,
TCPmux will return the positive reply for the
process; this is for compatibility with older server code, and also
allows you to invoke programs that use stdin/stdout without putting any
special server code in them.
Services that use TCPmux are
.Qq nowait
because they do not have a well-known port number and hence cannot listen
for new requests.
.Pp
.Nm
rereads its configuration file when it receives a hangup signal,
.Dv SIGHUP .
Services may be added, deleted or modified when the configuration file
is reread.
.Nm
creates a file
.Em /var/run/inetd.pid
that contains its process identifier.
.Ss libwrap
Support for
.Tn TCP
wrappers is included with
.Nm
to provide internal tcpd-like access control functionality.
An external tcpd program is not needed.
You do not need to change the
.Pa /etc/inetd.conf
server-program entry to enable this capability.
.Nm
uses
.Pa /etc/hosts.allow
and
.Pa /etc/hosts.deny
for access control facility configurations, as described in
.Xr hosts_access 5 .
.Pp
.Em Nota Bene :
.Tn TCP
wrappers do not affect/restrict
.Tn UDP
or internal services.
.Ss IPsec
The implementation includes a tiny hack to support IPsec policy settings for
each socket.
A special form of the comment line, starting with
.Dq Li "#@" ,
is used as a policy specifier.
The content of the above comment line will be treated as a IPsec policy string,
as described in
.Xr ipsec_set_policy 3 .
Multiple IPsec policy strings may be specified by using a semicolon
as a separator.
If conflicting policy strings are found in a single line,
the last string will take effect.
A
.Li "#@"
line affects all of the following lines in
.Pa /etc/inetd.conf ,
so you may want to reset the IPsec policy by using a comment line containing
only
.Li "#@"
.Pq with no policy string .
.Pp
If an invalid IPsec policy string appears in
.Pa /etc/inetd.conf ,
.Nm
logs an error message using
.Xr syslog 3
and terminates itself.
.Ss IPv6 TCP/UDP behavior
If you wish to run a server for both IPv4 and IPv6 traffic,
you will need to run two separate processes for the same server program,
specified as two separate lines in
.Pa /etc/inetd.conf
using
.Dq tcp4
and
.Dq tcp6
respectively.
Plain
.Dq tcp
means TCP on top of the current default IP version,
which is, at this moment, IPv4.
.Pp
Under various combination of IPv4/v6 daemon settings,
.Nm
will behave as follows:
.Bl -bullet -compact
.It
If you have only one server on
.Dq tcp4 ,
IPv4 traffic will be routed to the server.
IPv6 traffic will not be accepted.
.It
If you have two servers on
.Dq tcp4
and
.Dq tcp6 ,
IPv4 traffic will be routed to the server on
.Dq tcp4 ,
and IPv6 traffic will go to server on
.Dq tcp6 .
.It
If you have only one server on
.Dq tcp6 ,
only IPv6 traffic will be routed to the server.
The kernel may route to the server IPv4 traffic as well,
under certain configuration.
See
.Xr ip6 4
for details.
.El
.Sh FILES
.Bl -tag -width /etc/hosts.allow -compact
.It Pa /etc/inetd.conf
configuration file for all
.Nm
provided services
.It Pa /etc/services
service name to protocol and port number mappings.
.It Pa /etc/protocols
protocol name to protocol number mappings
.It Pa /etc/rpc
.Tn Sun-RPC
service name to service number mappings.
.It Pa /etc/hosts.allow
explicit remote host access list.
.It Pa /etc/hosts.deny
explicit remote host denial of service list.
.El
.Sh SEE ALSO
.Xr hosts_access 5 ,
.Xr hosts_options 5 ,
.Xr protocols 5 ,
.Xr rpc 5 ,
.Xr services 5 ,
.Xr comsat 8 ,
.Xr fingerd 8 ,
.Xr ftpd 8 ,
.Xr rexecd 8 ,
.Xr rlogind 8 ,
.Xr rshd 8 ,
.Xr telnetd 8 ,
.Xr tftpd 8
.Rs
.%A J. Postel
.%R RFC
.%N 862
.%D May 1983
.%T "Echo Protocol"
.Re
.Rs
.%A J. Postel
.%R RFC
.%N 863
.%D May 1983
.%T "Discard Protocol"
.Re
.Rs
.%A J. Postel
.%R RFC
.%N 864
.%D May 1983
.%T "Character Generator Protocol"
.Re
.Rs
.%A J. Postel
.%R RFC
.%N 867
.%D May 1983
.%T "Daytime Protocol"
.Re
.Rs
.%A J. Postel
.%A K. Harrenstien
.%R RFC
.%N 868
.%D May 1983
.%T "Time Protocol"
.Re
.Rs
.%A M. Lottor
.%R RFC
.%N 1078
.%D November 1988
.%T "TCP port service Multiplexer (TCPMUX)"
.Re
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.3 .
Support for
.Em Sun-RPC
based services is modeled after that
provided by SunOS 4.1.
Support for specifying the socket buffer sizes was added in
.Nx 1.4 .
In November 1996, libwrap support was added to provide
internal tcpd-like access control functionality;
libwrap is based on Wietse Venema's tcp_wrappers.
IPv6 support and IPsec hack was made by KAME project, in 1999.
.Sh BUGS
Host address specifiers, while they make conceptual sense for RPC
services, do not work entirely correctly.
This is largely because the portmapper interface does not provide
a way to register different ports for the same service on different
local addresses.
Provided you never have more than one entry for a given RPC service,
everything should work correctly (Note that default host address
specifiers do apply to RPC lines with no explicit specifier.)
.Pp
.Dq tcpmux
on IPv6 is not tested enough.
.Sh SECURITY CONSIDERATIONS
Enabling the
.Dq echo ,
.Dq discard ,
and
.Dq chargen
built-in trivial services is not recommended because remote
users may abuse these to cause a denial of network service to
or from the local host.

2383
usr.sbin/inetd/inetd.c Normal file
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159
usr.sbin/inetd/ipsec.c Normal file
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/* $NetBSD: ipsec.c,v 1.4 2012/01/04 16:09:43 drochner Exp $ */
/*
* Copyright (C) 1999 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>
#ifdef IPSEC
#include <netipsec/ipsec.h>
#ifndef IPSEC_POLICY_IPSEC /* no ipsec support on old ipsec */
#undef IPSEC
#endif
#endif
#include "ipsec.h"
#ifdef IPSEC
int
ipsecsetup(int af, int fd, const char *policy)
{
char *p0, *p;
int error;
if (!policy || policy == '\0')
p0 = p = strdup("in entrust; out entrust");
else
p0 = p = strdup(policy);
error = 0;
for (;;) {
p = strtok(p, ";");
if (p == NULL)
break;
while (*p && isspace((unsigned char)*p))
p++;
if (!*p) {
p = NULL;
continue;
}
error = ipsecsetup0(af, fd, p, 1);
if (error < 0)
break;
p = NULL;
}
free(p0);
return error;
}
int
ipsecsetup_test(const char *policy)
{
char *p0, *p;
char *buf;
int error;
if (!policy)
return -1;
p0 = p = strdup(policy);
if (p == NULL)
return -1;
error = 0;
for (;;) {
p = strtok(p, ";");
if (p == NULL)
break;
while (*p && isspace((unsigned char)*p))
p++;
if (!*p) {
p = NULL;
continue;
}
buf = ipsec_set_policy(p, (int)strlen(p));
if (buf == NULL) {
error = -1;
break;
}
free(buf);
p = NULL;
}
free(p0);
return error;
}
int
ipsecsetup0(int af, int fd, const char *policy, int commit)
{
int level;
int opt;
char *buf;
int error;
switch (af) {
case AF_INET:
level = IPPROTO_IP;
opt = IP_IPSEC_POLICY;
break;
#ifdef INET6
case AF_INET6:
level = IPPROTO_IPV6;
opt = IPV6_IPSEC_POLICY;
break;
#endif
default:
return -1;
}
buf = ipsec_set_policy(policy, (int)strlen(policy));
if (buf != NULL) {
error = 0;
if (commit && setsockopt(fd, level, opt,
buf, (socklen_t)ipsec_get_policylen(buf)) < 0) {
error = -1;
}
free(buf);
} else
error = -1;
return error;
}
#endif

34
usr.sbin/inetd/ipsec.h Normal file
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/* $NetBSD: ipsec.h,v 1.1 2000/01/31 14:28:20 itojun Exp $ */
/*
* Copyright (C) 1999 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
extern int ipsecsetup __P((int, int, const char *));
extern int ipsecsetup_test __P((const char *));
extern int ipsecsetup0 __P((int, int, const char *, int));

36
usr.sbin/inetd/pathnames.h Normal file
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/* $NetBSD: pathnames.h,v 1.7 2003/08/07 11:25:22 agc Exp $ */
/*
* Copyright (c) 1989 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.
*
* from: @(#)pathnames.h 8.1 (Berkeley) 6/6/93
*/
#include <paths.h>
#define _PATH_INETDCONF "/etc/inetd.conf"