Import lsock(1), a Perl script for listing open Internet sockets.

3 files changed, 146 insertions, 0 deletions

diff --git a/usr.bin/lsock/Makefile b/usr.bin/lsock/Makefile
new file mode 100644
index 0000000..1390507
--- /dev/null
+++ b/usr.bin/lsock/Makefile
@@ -0,0 +1,10 @@
+#	$Id$
+
+MAINTAINER=	des@freebsd.org
+MAN1=		lsock.1
+
+beforeinstall:
+	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
+	    ${.CURDIR}/lsock.pl ${DESTDIR}${BINDIR}/lsock
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/lsock/lsock.1 b/usr.bin/lsock/lsock.1
new file mode 100644
index 0000000..764b279
--- /dev/null
+++ b/usr.bin/lsock/lsock.1
@@ -0,0 +1,73 @@
+.\"-
+.\" Copyright (c) 1999 Dag-Erling Coïdan Smørgrav
+.\" 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
+.\"    in this position and unchanged.
+.\" 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. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+.\"
+.\"      $Id$
+.\"
+.Dd April 13, 1999
+.Dt LSOCK 1
+.Sh NAME
+.Nm lsock
+.Nd list open Internet sockets
+.Sh SYNOPSIS
+.Nm lsock
+.Sh DESCRIPTION
+The
+.Nm
+command lists open Internet sockets. The information listed for each
+socket is:
+.Bl -tag -width FOREIGN_ADDRESS
+.It Li USER
+The user who owns the socket.
+.It Li COMMAND
+The command which holds the socket.
+.It Li PID
+The process ID of the command which holds the socket.
+.It Li FD
+The file descriptor number of the socket.
+.It Li PROTO
+The transport protocol (udp or tcp) associated with the socket.
+.It Li LOCAL ADDRESS
+The address the local end of the socket is bound to (see
+.Xr getsockname 2 ).
+.It Li FOREIGN ADDRESS
+The address the foreign end of the socket is bound to (see
+.Xr getpeername 2 ).
+.El
+.Sh SEE ALSO
+.Xr fstat 1 ,
+.Xr inet 4 ,
+.Xr netstat 1 .
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Fx 3.1 .
+.Sh AUTHORS
+The
+.Nm
+command and this manual page were written by
+.An Dag-Erling Smørgrav Aq des@freebsd.org .
diff --git a/usr.bin/lsock/lsock.pl b/usr.bin/lsock/lsock.pl
new file mode 100644
index 0000000..06218c6
--- /dev/null
+++ b/usr.bin/lsock/lsock.pl
@@ -0,0 +1,63 @@
+#!/usr/bin/perl5
+#-
+# Copyright (c) 1999 Dag-Erling Coïdan Smørgrav
+# 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
+#    in this position and unchanged.
+# 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. The name of the author may not be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+#
+#      $Id$
+#
+
+my (%myaddr, %hisaddr);
+my ($user, $cmd, $pid, $fd, $inet, $type, $proto, $sock, $laddr, $faddr);
+
+format STDOUT_TOP =
+USER     COMMAND      PID   FD PROTO  LOCAL ADDRESS        FOREIGN ADDRESS
+.
+format STDOUT =
+@<<<<<<< @<<<<<<<<< @>>>> @>>> @<<    @<<<<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<<<<
+$user,   $cmd,      $pid, $fd, $proto,$laddr,              $faddr
+.
+
+open NETSTAT, "netstat -Aan |" or die "'netstat -Aan' failed: $!";
+
+while (<NETSTAT>) {
+    my ($sock, $proto, $recvq, $sendq, $laddr, $faddr, $state) = split;
+    next unless ($proto =~ m/tcp|udp/);
+    ($myaddr{$sock}, $hisaddr{$sock}) = ($laddr, $faddr);
+}
+
+close NETSTAT;
+
+open FSTAT, "fstat |" or die "'fstat' failed: $!\n";
+
+while (<FSTAT>) {
+    ($user, $cmd, $pid, $fd, $inet, $type, $proto, $sock) = split;
+    chop $fd;
+    next unless ($inet eq "internet");
+    ($laddr, $faddr) = ($myaddr{$sock}, $hisaddr{$sock});
+    write STDOUT;
+}
+
+close FSTAT;