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Total rewrite. This was actually the first non-trivial Perl script I ever
wrote, and as such was not very pretty. Changes that may cause problems for people who use sockstat in scripts: - sockstat(8) now displays Unix domain sockets in addition to IPv4 and IPv6 - the last period in local and foreign addresses is changed to a colon to make the port number easier to spot - IPv4 and IPv6 sockets are listed separately (IPv4 first, then IPv6, then Unix)
This commit is contained in:
Dag-Erling Smørgrav
parent
0e4b6a048e
commit
0c2352994b
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=66789
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@ -1,4 +1,4 @@
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#!/usr/bin/perl5
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#!/usr/bin/perl -w
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#-
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# Copyright (c) 1999 Dag-Erling Coïdan Smørgrav
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# All rights reserved.
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@ -29,37 +29,140 @@
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# $FreeBSD$
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#
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my (%proto, %myaddr, %hisaddr);
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my ($user, $cmd, $pid, $fd, $inet, $type, $proto, $sock, $laddr, $faddr);
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use strict;
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use Getopt::Std;
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print <<EOH;
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USER COMMAND PID FD PROTO LOCAL ADDRESS FOREIGN ADDRESS
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EOH
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format STDOUT =
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@<<<<<<< @<<<<<<< @>>>> @>>> @<<<<< @<<<<<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<<<<<
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$user, $cmd, $pid, $fd, $proto,$laddr, $faddr
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.
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my %netstat;
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my %fstat;
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my $unknown = [ "?", "?", "?", "?", "?", "?", "?", "?", "?" ];
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open NETSTAT, "/usr/bin/netstat -Aan |" or die "'netstat' failed: $!";
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<NETSTAT>; <NETSTAT>;
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my $inet_fmt = "%-8.8s %-8.8s %5.5s %4.4s %-6.6s %-21.21s %-21.21s\n";
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my $unix_fmt = "%-8.8s %-8.8s %5.5s %4.4s %-6.6s %-43.43s\n";
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while (<NETSTAT>) {
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my ($sock, $proto, $recvq, $sendq, $laddr, $faddr, $state) = split;
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($proto{$sock}, $myaddr{$sock}, $hisaddr{$sock}) =
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($proto, $laddr, $faddr);
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#
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# Gather information about sockets
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#
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sub gather() {
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local *PIPE; # Pipe
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my $pid; # Child PID
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my $line; # Input line
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my @fields; # Fields
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# Netstat
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if (!defined($pid = open(PIPE, "-|"))) {
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die("open(netstat): $!\n");
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} elsif ($pid == 0) {
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exec("/usr/bin/netstat", "-Aan");
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die("exec(netstat): $!\n");
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}
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while ($line = <PIPE>) {
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next unless ($line =~ m/^[0-9a-f]{8} /);
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chomp($line);
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@fields = split(' ', $line);
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$netstat{$fields[0]} = [ @fields ];
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}
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close(PIPE)
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or die("close(netstat): $!\n");
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# Fstat
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if (!defined($pid = open(PIPE, "-|"))) {
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die("open(fstat): $!\n");
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} elsif ($pid == 0) {
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exec("/usr/bin/fstat");
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die("exec(fstat): $!\n");
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}
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while ($line = <PIPE>) {
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chomp($line);
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@fields = split(' ', $line);
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next if ($fields[4] eq "-");
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push(@{$fstat{$fields[4]}}, [ @fields ]);
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}
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close(PIPE)
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or die("close(fstat): $!\n");
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}
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close NETSTAT;
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#
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# Replace the last dot in an "address.port" string with a colon
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#
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sub addr($) {
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my $addr = shift; # Address
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open FSTAT, "/usr/bin/fstat |" or die "'fstat' failed: $!\n";
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while (<FSTAT>) {
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($user, $cmd, $pid, $fd, $inet, $type, $proto, $sock) = split;
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chop $fd;
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next unless ($inet eq "internet") || ($inet eq "internet6") && ($type ne "raw");
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($proto, $laddr, $faddr) =
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($proto{$sock}, $myaddr{$sock}, $hisaddr{$sock});
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write STDOUT;
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$addr =~ s/^(.*)\.([^\.]*)$/$1:$2/;
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return $addr;
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}
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close FSTAT;
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#
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# Print information about Internet sockets
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#
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sub print_inet($) {
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my $af = shift; # Address family
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my $fsd; # Fstat data
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my $nsd; # Netstat data
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printf($inet_fmt, "USER", "COMMAND", "PID", "FD",
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"PROTO", "LOCAL ADDRESS", "FOREIGN ADDRESS");
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foreach $fsd (@{$fstat{$af}}) {
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$nsd = $netstat{$fsd->[7]} || $unknown;
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printf($inet_fmt, $fsd->[0], $fsd->[1], $fsd->[2],
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substr($fsd->[3], 0, -1),
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$nsd->[1], addr($nsd->[4]), addr($nsd->[5]));
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}
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print("\n");
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}
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#
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# Print information about Unix domain sockets
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#
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sub print_unix() {
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my %endpoint; # Mad PCB to process/fd
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my $fsd; # Fstat data
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my $nsd; # Netstat data
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foreach $fsd (@{$fstat{"local"}}) {
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$endpoint{$fsd->[6]} = "$fsd->[1]\[$fsd->[2]\]:" .
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substr($fsd->[3], 0, -1);
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}
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printf($unix_fmt, "USER", "COMMAND", "PID", "FD", "PROTO", "ADDRESS");
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foreach $fsd (@{$fstat{"local"}}) {
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$nsd = $netstat{$fsd->[6]} || $unknown;
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printf($unix_fmt, $fsd->[0], $fsd->[1], $fsd->[2],
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substr($fsd->[3], 0, -1), $fsd->[5],
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$nsd->[8] || ($fsd->[8] ? $endpoint{$fsd->[8]} : "(none)"));
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}
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print("\n");
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}
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#
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# Print usage message and exit
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#
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sub usage() {
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print(STDERR "Usage: sockstat [-46u]\n");
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exit(1);
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}
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MAIN:{
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my %opts; # Command-line options
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getopts("46u", \%opts)
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or usage();
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gather();
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if (!$opts{'4'} && !$opts{'6'} && !$opts{'u'}) {
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$opts{'4'} = $opts{'6'} = $opts{'u'} = 1;
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}
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if ($opts{'4'}) {
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print_inet("internet");
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}
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if ($opts{'6'}) {
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print_inet("internet6");
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}
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if ($opts{'u'}) {
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print_unix();
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}
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exit(0);
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}
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