diff options
Diffstat (limited to 'auxiliary/qshape/qshape.pl')
| -rwxr-xr-x | auxiliary/qshape/qshape.pl | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/auxiliary/qshape/qshape.pl b/auxiliary/qshape/qshape.pl new file mode 100755 index 0000000..3665216 --- /dev/null +++ b/auxiliary/qshape/qshape.pl @@ -0,0 +1,376 @@ +#! /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 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(); |