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#! /usr/bin/perl -w
# To view the formatted manual page of this file, type:
# POSTFIXSOURCE/mantools/srctoman - qshape | nroff -man
#++
# NAME
# qshape 1
# SUMMARY
# Print Postfix queue domain and age distribution
# SYNOPSIS
# .fi
# \fBqshape\fR [\fB-s\fR] [\fB-p\fR] [\fB-m \fImin_subdomains\fR]
# [\fB-b \fIbucket_count\fR] [\fB-t \fIbucket_time\fR]
# [\fB-l\fR] [\fB-w \fIterminal_width\fR]
# [\fB-N \fIbatch_msg_count\fR] [\fB-n \fIbatch_top_domains\fR]
# [\fB-c \fIconfig_directory\fR] [\fIqueue_name\fR ...]
# DESCRIPTION
# The \fBqshape\fR program helps the administrator understand the
# Postfix queue message distribution in time and by sender domain
# or recipient domain. The program needs read access to the queue
# directories and queue files, so it must run as the superuser or
# the \fBmail_owner\fR specified in \fBmain.cf\fR (typically
# \fBpostfix\fR).
#
# Options:
# .IP \fB-s\fR
# Display the sender domain distribution instead of the recipient
# domain distribution. By default the recipient distribution is
# displayed. There can be more recipients than messages, but as
# each message has only one sender, the sender distribution is a
# message distribution.
# .IP \fB-p\fR
# Generate aggregate statistics for parent domains. Top level domains
# are not shown, nor are domains with fewer than \fImin_subdomains\fR
# subdomains. The names of parent domains are shown with a leading dot,
# (e.g. \fI.example.com\fR).
# .IP "\fB-m \fImin_subdomains\fR"
# When used with the \fB-p\fR option, sets the minimum subdomain count
# needed to show a separate line for a parent domain. The default is 5.
# .IP "\fB-b \fIbucket_count\fR"
# The age distribution is broken up into a sequence of geometrically
# increasing intervals. This option sets the number of intervals
# or "buckets". Each bucket has a maximum queue age that is twice
# as large as that of the previous bucket. The last bucket has no
# age limit.
# .IP "\fB-t \fIbucket_time\fR"
# The age limit in minutes for the first time bucket. The default
# value is 5, meaning that the first bucket counts messages between
# 0 and 5 minutes old.
# .IP "\fB-l\fR"
# Instead of using a geometric age sequence, use a linear age sequence,
# in other words simple multiples of \fBbucket_time\fR.
#
# This feature is available in Postfix 2.2 and later.
# .IP "\fB-w \fIterminal_width\fR"
# The output is right justified, with the counts for the last
# bucket shown on the 80th column, the \fIterminal_width\fR can be
# adjusted for wider screens allowing more buckets to be displayed
# without truncating the domain names on the left. When a row for a
# full domain name and its counters does not fit in the specified
# number of columns, only the last 17 bytes of the domain name
# are shown with the prefix replaced by a '+' character. Truncated
# parent domain rows are shown as '.+' followed by the last 16 bytes
# of the domain name. If this is still too narrow to show the domain
# name and all the counters, the terminal_width limit is violated.
# .IP "\fB-N \fIbatch_msg_count\fR"
# When the output device is a terminal, intermediate results are
# shown each "batch_msg_count" messages. This produces usable results
# in a reasonable time even when the deferred queue is large. The
# default is to show intermediate results every 1000 messages.
# .IP "\fB-n \fIbatch_top_domains\fR"
# When reporting intermediate or final results to a termainal, report
# only the top "batch_top_domains" domains. The default limit is 20
# domains.
# .IP "\fB-c \fIconfig_directory\fR"
# The \fBmain.cf\fR configuration file is in the named directory
# instead of the default configuration directory.
# .PP
# Arguments:
# .IP \fIqueue_name\fR
# By default \fBqshape\fR displays the combined distribution of
# the incoming and active queues. To display a different set of
# queues, just list their directory names on the command line.
# Absolute paths are used as is, other paths are taken relative
# to the \fBmain.cf\fR \fBqueue_directory\fR parameter setting.
# While \fBmain.cf\fR supports the use of \fI$variable\fR expansion
# in the definition of the \fBqueue_directory\fR parameter, the
# \fBqshape\fR program does not. If you must use variable expansions
# in the \fBqueue_directory\fR setting, you must specify an explicit
# absolute path for each queue subdirectory even if you want the
# default incoming and active queue distribution.
# SEE ALSO
# mailq(1), List all messages in the queue.
# QSHAPE_README Examples and background material.
# FILES
# $config_directory/main.cf, Postfix installation parameters.
# $queue_directory/maildrop/, local submission directory.
# $queue_directory/incoming/, new message queue.
# $queue_directory/hold/, messages waiting for tech support.
# $queue_directory/active/, messages scheduled for delivery.
# $queue_directory/deferred/, messages postponed for later delivery.
# LICENSE
# .ad
# .fi
# The Secure Mailer license must be distributed with this software.
# AUTHOR(S)
# Victor Duchovni
# Morgan Stanley
#--
use strict;
use IO::File;
use File::Find;
use Getopt::Std;
my $cls; # Clear screen escape sequence
my $batch_msg_count; # Interim result frequency
my $batch_top_domains; # Interim result count
my %opts; # Command line switches
my %q; # domain counts for queues and buckets
my %sub; # subdomain counts for parent domains
my $now = time; # reference time
my $bnum = 10; # deferred queue bucket count
my $width = 80; # screen char width
my $dwidth = 18; # min width of domain field
my $tick = 5; # minutes
my $minsub = 5; # Show parent domains with at least $minsub subdomains
my @qlist = qw(incoming active);
do {
local $SIG{__WARN__} = sub {
warn "$0: $_[0]" unless exists($opts{"h"});
die "Usage: $0 [ -s ] [ -p ] [ -m <min_subdomains> ] [ -l ]\n".
"\t[ -b <bucket_count> ] [ -t <bucket_time> ] [ -w <terminal_width> ]\n".
"\t[ -N <batch_msg_count> ] [ -n <batch_top_domains> ]\n".
"\t[ -c <config_directory> ] [ <queue_name> ... ]\n".
"The 's' option shows sender domain counts.\n".
"The 'p' option shows address counts by for parent domains.\n".
"Parent domains are shown with a leading '.' before the domain name.\n".
"Parent domains are only shown if the the domain is not a TLD, and at\n".
"least <min_subdomains> (default 5) subdomains are shown in the output.\n\n".
"The bucket age ranges in units of <bucket_time> minutes are\n".
"[0,1), [1,2), [2,4), [4,8), [8, 16), ... i.e.:\n".
"\tthe first bucket is [0, bucket_time) minutes\n".
"\tthe second bucket is [bucket_time, 2*bucket_time) minutes\n".
"\tthe third bucket is [2*bucket_time, 4*bucket_time) minutes...\n".
"'-l' makes the ages linear, the number of buckets shown is <bucket_count>\n\n".
"The default summary is for the incoming and active queues. An explicit\n".
"list of queue names can be given on the command line. Non-absolute queue\n".
"names are interpreted relative to the Postfix queue directory. Use\n".
"<config_directory> to specify a non-default Postfix instance. Values of\n".
"the main.cf queue_directory parameter that use variable expansions are\n".
"not supported. If necessary, use explicit absolute paths for all queues.\n";
};
getopts("lhc:psw:b:t:m:n:N:", \%opts);
warn "Help message" if (exists $opts{"h"});
@qlist = @ARGV if (@ARGV > 0);
# The -c option specifies the configuration directory,
# it is not used if all queue names are absolute.
#
foreach (@qlist) {
next if (m{^/});
$ENV{q{MAIL_CONFIG}} = $opts{"c"} if (exists $opts{"c"});
chomp(my $qdir = qx{postconf -h queue_directory});
die "$0: postconf failed\n" if ($? != 0);
warn "'queue_directory' variable expansion not supported: $qdir\n"
if ($qdir =~ /\$/);
chdir($qdir) or die "$0: chdir($qdir): $!\n";
last;
}
};
$width = $opts{"w"} if (exists $opts{"w"} && $opts{"w"} > 80);
$bnum = $opts{"b"} if (exists $opts{"b"} && $opts{"b"} > 0);
$tick = $opts{"t"} if (exists $opts{"t"} && $opts{"t"} > 0);
$minsub = $opts{"m"} if (exists $opts{"m"} && $opts{"m"} > 0);
if ( -t STDOUT ) {
$batch_msg_count = 1000 unless defined($batch_msg_count = $opts{"N"});
$batch_top_domains = 20 unless defined ($batch_top_domains = $opts{"n"});
$cls = `clear`;
} else {
$batch_msg_count = 0;
$batch_top_domains = 0;
$cls = "";
}
sub rec_get {
my ($h) = @_;
my $r = getc($h) || return;
my $l = 0;
my $shift = 0;
while (defined(my $lb = getc($h))) {
my $o = ord($lb);
$l |= ($o & 0x7f) << $shift ;
last if (($o & 0x80) == 0);
$shift += 7;
return if ($shift > 14); # XXX: max rec len of 2097151
}
my $d = "";
return unless ($l == 0 || read($h,$d,$l) == $l);
($r, $l, $d);
}
sub qenv {
my ($qfile) = @_;
return unless $qfile =~ m{(^|/)[A-Za-z0-9]{6,}$};
my @st = lstat($qfile);
return unless (@st > 0 && -f _ && (($st[2] & 0733) == 0700));
my $h = new IO::File($qfile, "r") || return;
my ($t, $s, @r, $dlen);
my ($r, $l, $d) = rec_get($h);
if ($r eq "C") {
# XXX: Sanity check, the first record type is REC_TYPE_SIZE (C)
# if the file is proper queue file written by "cleanup", in
# this case the second record is always REC_TYPE_TIME.
#
$dlen = $1 if ($d =~ /^\s*(\d+)\s+\d+\s+\d+/);
($r, $l, $d) = rec_get($h);
return unless (defined $r && $r eq "T");
($t) = split(/\s+/, $d);
} elsif ($r eq "S" || $r eq "F") {
# For embryonic queue files in the "maildrop" directory the first
# record is either a REC_TYPE_FULL (F) followed by REC_TYPE_FROM
# or an immediate REC_TYPE_FROM (S). In either case there is no
# REC_TYPE_TIME and we get the timestamp via lstat().
#
$t = $st[9];
if ($r ne "S") {
($r, $l, $d) = rec_get($h);
return unless (defined $r && $r eq "S");
}
$s = $d;
} else {
# XXX: Not a valid queue file!
#
return undef;
}
while (my ($r, $l, $d) = rec_get($h)) {
if ($r eq "p" && $d > 0) {
seek($h, $d, 0) or return (); # follow pointer
}
if ($r eq "R") { push(@r, $d); }
elsif ($r eq "S") { $s = $d; }
elsif ($r eq "M") {
last unless (defined($s));
if (defined($dlen)) {
seek($h, $dlen, 1) or return (); # skip content
($r, $l, $d) = rec_get($h);
} else {
while ((($r, $l, $d) = rec_get($h)) && ($r =~ /^[NLp]$/)) {
if ($r eq "p" && $d > 0) {
seek($h, $d, 0) or return (); # follow pointer
}
}
}
return unless (defined($r) && $r eq "X");
}
elsif ($r eq "E") {
last unless (defined($t) && defined($s) && @r);
return ($t, $s, @r);
}
}
return ();
}
# bucket 0 is the total over all the buckets.
# buckets 1 to $bnum contain the age breakdown.
#
sub bucket {
my ($qt, $now) = @_;
my $m = ($now - $qt) / (60 * $tick);
return 1 if ($m < 1);
my $b = $opts{"l"} ? int($m+1) : 2 + int(log($m) / log(2));
$b < $bnum ? $b : $bnum;
}
# Collate by age of message in the selected queues.
#
my $msgs;
sub wanted {
if (my ($t, $s, @r) = qenv($_)) {
my $b = bucket($t, $now);
foreach my $a (map {lc($_)} ($opts{"s"} ? ($s) : @r)) {
++$q{"TOTAL"}->[0];
++$q{"TOTAL"}->[$b];
$a = "MAILER-DAEMON" if ($a eq "");
$a =~ s/.*\@//;
$a =~ s/\.\././g;
$a =~ s/\.?(.+?)\.?$/$1/;
my $new = 0;
do {
my $old = (++$q{$a}->[0] > 1);
++$q{$a}->[$b];
++$sub{$a} if ($new);
$new = ! $old;
} while ($opts{"p"} && $a =~ s/^(?:\.)?[^.]+\.(.*\.)/.$1/);
}
if ($batch_msg_count > 0 && ++$msgs % $batch_msg_count == 0) {
results();
}
}
}
my @heads;
my $fmt;
my $dw;
sub pdomain {
my ($d, @count) = @_;
foreach ((0 .. $bnum)) { $count[$_] ||= 0; }
my $len = length($d);
if ($len > $dw) {
if (substr($d, 0, 1) eq ".") {
print ".+",substr($d, $len-$dw+2, $dw-2);
} else {
print "+",substr($d, $len-$dw+1, $dw-1);
}
} else {
print (" " x ($dw - $len), $d);
}
printf "$fmt\n", @count;
}
sub results {
@heads = ();
$dw = $width;
$fmt = "";
for (my $i = 0, my $t = 0; $i <= $bnum; ) {
$q{"TOTAL"}->[$i] ||= 0;
my $l = length($q{"TOTAL"}->[$i]);
my $h = ($i == 0) ? "T" : $t;
$l = length($h) if (length($h) >= $l);
$l = ($l > 2) ? $l + 1 : 3;
push(@heads, $h);
$fmt .= sprintf "%%%ds", $l;
$dw -= $l;
if (++$i < $bnum) { $t += ($t && !$opts{"l"}) ? $t : $tick; } else { $t = "$t+"; }
}
$dw = $dwidth if ($dw < $dwidth);
print $cls if ($batch_msg_count > 0);
# Print headings
#
pdomain("", @heads);
my $n = 0;
# Show per-domain totals
#
foreach my $d (sort { $q{$b}->[0] <=> $q{$a}->[0] ||
length($a) <=> length($b) } keys %q) {
# Skip parent domains with < $minsub subdomains.
#
next if ($d =~ /^\./ && $sub{$d} < $minsub);
last if ($batch_top_domains > 0 && ++$n > $batch_top_domains);
pdomain($d, @{$q{$d}});
}
}
find(\&wanted, @qlist);
results();
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