#!/usr/local/bin/perl
# Copyright (c) 2003-2004 by Jeremy Kister
# Author: Jeremy Kister
# Date: 20031030 03:48 (EDT)
# Function: run a manual check on [vpopmail] mail quotas
# version 1.42
# may specify -e for an email report
# may specify -f to save a csv file
# may specify -v for verbose
# may specify -q for static bytes quota (dont listen to quota in vpasswd files)
# may specify -n for static number of files quota
# may sepcify -m to check that the mx record(s) match this regex - will be case insensitive
# ie: [abcd]\.mx\.example\.net
# doesnt work very well yet -- this feature is in development
# example syntax: mailquota.pl -e user@example.com -f /tmp/mailquota.csv -v -q 104857600 -n 2000
# will:
# send report to user@example.com
# save report in /tmp/mailquota.csv
# be more verbose
# report users who's Maildir's are over 100MB
# report users who have more than 2000 messages in their new/ or cur/ directory
# :set tabstop=3 makes me pretty
# take a look at
# NOTE: THERE ARE FUNNY CHARACTERS BELOW: COPY-AND-PASTE PROLLY WONT WORK (think wget)
# this script could take quite some time -- use verbose for [some] reassurance
# the more over quota mailboxes you have, the more memory this script will use
use Getopt::Std;
use Sys::Hostname;
use Date::Manip;
my $gzip = '/usr/local/bin/gzip';
my $uuencode = '/usr/bin/uuencode';
my $du = '/usr/bin/du -s -k'; # look in subdirs, and output in KBytes
my $sendmail = '/usr/lib/sendmail';
getopts('f:ve:q:n:d:');
die "cannot execute $du for disk usage (path/argument problem?)\n" if(`$du /dev/null 2>&1 >/dev/null`);
if(defined($opt_e)){
if($opt_e !~ /^([a-z0-9_\.\+\-\?\^])+\@(([a-z0-9\-])+\.)+([a-z0-9]{2,4})+$/i){
die "you specified -e, but $opt_e doesnt look like an email address\n";
}
die "cannot execute $gzip for compression\n" unless(-x $gzip);
die "cannot execute $uuencode for encoding\n" unless(-x $uuencode);
die "cannot execute $sendmail for sending mail\n" unless(-x $sendmail);
}
if(defined($opt_f)){
open(N,">$opt_f") || die "cannot write to $opt_f: $!\n";
}
if(defined($opt_q) && ($opt_q < 1024)){
die "you specified -q, but $opt_q isnt even 1 KB... (this value should be bytes - (1048576 = 1MB)) \n";
}
if(defined($opt_m)){
# we only prefer dig because it has built-in timeouts for when an
# authoritative server doesnt talk back to us
if(-x "/usr/local/bin/dig"){
$lookup="/usr/local/bin/dig mx";
}elsif(-x "/usr/local/bin/dnsmx"){
$lookup="/usr/local/bin/dnsmx";
}else{
die "i cant find either dnsmx (from djbdns) or dig (from bind).\n";
}
}
if($opt_v){
$| = 1; #flush
@chars = ( "|", "/", "-", "\\" );
}
print "building domains list...\n" if($opt_v);
open(A, "/var/qmail/users/assign") || die "cannot open assign file: $!\n";
while(){
if(/^\+.+-:([^:]+):\d+:\d+:([^:]+):-::/){
if((-f "$2/vpasswd") && (! -l $2)){
$paths{$1} = $2;
}
}
}
close A;
while(my($domain,$dir) = each %paths){
print "working on $domain [ " if($opt_v);
open(V, "$dir/vpasswd") || warn "cannot open $dir/vpasswd: $!\n"; # prolly permission prob
while(){
if($opt_v){
if($i >= 3){ $i = 0;
}else{ $i++; }
print "" . $chars[$i] . "]"; # will stutter because its not inside du
}
if(/^([^:]+):[^:]+:\d+:\d+:[^:]*:([^:]+):([a-zA-Z0-9]+)/){
my $mailbox = $1;
my $maildir = $2;
my $quota = $3;
my $quotakbytes = ($opt_q) ? ($opt_q/1024) : undef;
my $quotanum = ($opt_n) ? $opt_n : undef;
unless(defined($quotakbytes)){
if($quota eq 'NOQUOTA'){
print STDERR "WARNING: $mailbox\@$domain has no quota!!\n";
next unless(defined($opt_n));
}elsif($quota =~ /(\d+)S?/){ # dont want C
my $quotabytes = $1;
if($quotabytes < 1024){
print STDERR "ERROR: $mailbox\@$domain has an unusable quota (less than 1KB) ($quota)\n";
next;
}else{
$quotakbytes = ($1/1024);
}
}else{
print STDERR "ERROR: $mailbox\@$domain has a quota that I dont comprehend(1) ($quota)\n";
next;
}
}
unless(defined($quotanum)){
if($quota eq 'NOQUOTA'){
print STDERR "WARNING: $mailbox\@$domain has no quota!!\n";
next unless(defined($quotakbytes));
}elsif($quota =~ /(\d+)C/){ # number of files
$quotanum = $1;
}else{
print STDERR "ERROR: $mailbox\@$domain has a quota that I dont comprehend(2) ($quota) (perhaps you should specify -n N)\n";
next;
}
}
my ($usedkbytes) = split /\s+/, `$du $maildir`;
my $total=0;
foreach my $stat ('new','cur'){
my $num=0;
if(opendir(D, "$maildir/Maildir/$stat")){
foreach(grep {!/^\./} readdir D){
$num++;
}
closedir D;
$$stat{"$mailbox\@$domain"} = $num;
$total += $num;
}else{
warn "couldnt open $maildir/Maildir/$stat: $!\n";
}
}
if(($usedkbytes > $quotakbytes) || ($total > $quotanum)){
$abusers{"$mailbox\@$domain"} = "${usedkbytes}/${quotakbytes}/${quotanum}";
my $secondsago = ($^T - (stat("$maildir/lastauth"))[9]);
my $parseddate = ParseDate("$secondsago seconds ago");
$parseddate =~ s/(\d{2}:\d{2}\:\d{2})$/ $1/g; # no y10k bug ;)
$lastauth{"$mailbox\@$domain"} = $parseddate;
}else{
undef $new{$email};
undef $cur{$email};
}
}
}
close V;
print "\n" if($opt_v);
}
while(my ($email,$quotainfo) = each %abusers){
my ($usedkb,$quotakb,$msgsquota) = split (/\//, $quotainfo);
my $usedbytes = ($usedkb * 1024);
if($usedkb >= 1048576){
$storage = sprintf("%.2f",($usedkb/1048576)) . " GB";
}elsif($usedkb >= 1024){
$storage = sprintf("%.2f",($usedkb/1024)) . " MB";
}else{
$storage = $usedkb . " KB";
}
if($quotakb >= 1048576){
$quota = sprintf("%.2f",($quotakb/1048576)) . " GB";
}elsif($quotakb >= 1024){
$quota = sprintf("%.2f",($quotakb/1024)) . " MB";
}else{
$quota = $quotakb . " KB";
}
# find out if the abusive domain has MX to us (non-abusers dont get MX checked)
if(defined($opt_m)){
my $sawourmx = undef;
($nul,$domain) = split(/\@/, $email);
unless(exists($notourmx{$domain})){
foreach(`$lookup $domain`){
if(/$opt_m/i){
$sawourmx=1;
last;
}
}
unless(defined($sawourmx)){
$notourmx{$domain} = 1; # mx lookups are more expensive than memory
}
}
}
if($opt_e || $opt_f){
my $string = "$email,$usedbytes,$storage,$quota,$new{$email},$cur{$email},$msgsquota,$lastauth{$email}";
if(defined($opt_m) && (exists($notourmx{$domain}))){
$string .= ",*NotOurMX*";
}
push @array, "$string\n";
}else{
print "$email is using $storage/$quota (last auth: $lastauth{$email} - $new{$email} unread, $cur{$email} read)";
if(defined($opt_m) && (exists($notourmx{$domain}))){
print " *NotOurMX*";
}
print "\n";
}
}
if($opt_e){
open(T, ">/tmp/mailquotas.$$.csv") || die "cannot open /tmp/mailquotas.$$.csv: $!\n";
print T "email address,used bytes,maildir size,size quota,unread msgs,read msgs,msgs quota,last auth";
if(defined($opt_m)){
print T ",MX Status";
}
print T "\n";
foreach(@array){
print T;
}
close T;
# may clear memory as long as we're not saving to a file via $opt_f
@array = undef unless(defined($opt_f));
system("$gzip -9 /tmp/mailquotas.$$.csv");
$boundary="___JK.RIAA_SUCKS&FUCK_VERISIGN.JK___";
$hostname=hostname();
if(open(S, "| $sendmail -t")){
print S "From: $hostname MailServer \n",
"To: SysOp <$opt_e>\n",
"Subject: Mail Quotas on $hostname\n",
"Mime-Version: 1.0\n",
"Content-Type: multipart/mixed;\n",
"\tboundary=\"$boundary\"\n",
"\n",
"This is a multi-part message in MIME format.\n",
"\n",
"--$boundary\n",
"Content-Type: text/plain;\n",
"\tcharset=\"iso-8859-1\"\n",
"Content-Transfer-Encoding: 7bit\n",
"\n",
"Enclosed is mailquotas.csv.gz - open and extract attachment to view utilizations in Excel.\n",
"\n",
"--$boundary\n",
"Content-Type: application/x-gzip;\n",
"\tname=\"mailquotas.csv.gz\"\n",
"Content-Transfer-Encoding: uuencode\n",
"Content-Disposition: attachment;\n",
"\tfilename=\"mailquotas.csv.gz\"\n",
"\n";
open(C,"$uuencode /tmp/mailquotas.$$.csv.gz mailquotas.csv.gz |") || die "cannot fork uuencode: $!\n";
while(){
print S;
}
print S "\n",
"--$boundary--\n";
close S;
unlink("/tmp/mailquotas.$$.csv.gz") || warn "couldnt delete /tmp/mailquotas.$$.csv.gz: $!\n";
}else{
warn "cannot fork sendmail: $!\n";
}
}
if($opt_f){
print N "email address,used bytes,maildir size,size quota,unread msgs,read msgs,msgs quota,last auth";
if(defined($opt_m)){
print N ",MX Status";
}
print N "\n";
foreach(@array){
print N;
}
close N;
}
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