You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
375 lines
12 KiB
Perl
375 lines
12 KiB
Perl
#!/usr/bin/perl -w
|
|
#
|
|
# Virtual Vacation 3.1
|
|
# by Mischa Peters <mischa at high5 dot net>
|
|
# Copyright (c) 2002 - 2005 High5!
|
|
# Licensed under GPL for more info check GPL-LICENSE.TXT
|
|
#
|
|
# Additions:
|
|
# 2004/07/13 David Osborn <ossdev at daocon.com>
|
|
# strict, processes domain level aliases, more
|
|
# subroutines, send reply from original to address
|
|
#
|
|
# 2004/11/09 David Osborn <ossdev at daocon.com>
|
|
# Added syslog support
|
|
# Slightly better logging which includes messageid
|
|
# Avoid infinite loops with domain aliases
|
|
#
|
|
# 2005-01-19 Troels Arvin <troels@arvin.dk>
|
|
# PostgreSQL-version.
|
|
# Normalized DB schema from one vacation table ("vacation")
|
|
# to two ("vacation", "vacation_notification"). Uses
|
|
# referential integrity CASCADE action to simplify cleanup
|
|
# when a user is no longer on vacation.
|
|
# Inserting variables into queries stricly by prepare()
|
|
# to try to avoid SQL injection.
|
|
# International characters are now handled well.
|
|
#
|
|
# 2005-01-21 Troels Arvin <troels@arvin.dk>
|
|
# Uses the Email::Valid package to avoid sending notices
|
|
# to obviously invalid addresses.
|
|
#
|
|
# 2007-08-15 David Goodwin <david@palepurple.co.uk>
|
|
# Use the Perl Mail::Sendmail module for sending mail
|
|
# Check for headers that start with blank lines (patch from forum)
|
|
#
|
|
# 2007-08-20 Martin Ambroz <amsys@trustica.cz>
|
|
# Added initial Unicode support
|
|
#
|
|
#
|
|
# Requirements:
|
|
# You need to have the DBD::Pg or DBD::mysql perl-module installed.
|
|
# You need to have the Mail::Sendmail module installed.
|
|
# You need to have the Email::Valid module installed.
|
|
# You need to have the MIME::Charset module installed.
|
|
# You need to have the MIME::EncWords module installed.
|
|
#
|
|
# On Debian based systems :
|
|
# libmail-sendmail-perl
|
|
# libdbd-pg-perl
|
|
# libemail-valid-perl
|
|
# libmime-perl
|
|
# libmime-charset-perl (currently in testing, see instructions below)
|
|
# libmime-encwords-perl (currently in testing, see instructions below)
|
|
#
|
|
# Note: When you use this module, you may start seeing error messages
|
|
# like "Cannot insert a duplicate key into unique index
|
|
# vacation_notification_pkey" in your system logs. This is expected
|
|
# behavior, and not an indication of trouble (see the "already_notified"
|
|
# subroutine for an explanation).
|
|
#
|
|
# You must also have the Email::Valid and MIME-tools perl-packages
|
|
# installed. They are available in some package collections, under the
|
|
# names 'perl-Email-Valid' and 'perl-MIME-tools', respectively.
|
|
# One such package collection (for Linux) is:
|
|
# http://dag.wieers.com/home-made/apt/packages.php
|
|
#
|
|
|
|
# ========== begin configuration ==========
|
|
|
|
# IMPORTANT: If you put passwords into this script, then remember
|
|
# to restrict access to the script, so that only the vacation user
|
|
# can read it.
|
|
|
|
# db_type - uncomment one of these
|
|
my $db_type = 'Pg';
|
|
#my $db_type = 'mysql';
|
|
|
|
# leave empty for connection via UNIX socket
|
|
my $db_host = '';
|
|
|
|
# connection details
|
|
my $db_username = 'vacation';
|
|
my $db_password = '';
|
|
my $db_name = 'postfix';
|
|
|
|
my $syslog = 1;
|
|
|
|
# path to logfile, when empty logging is supressed
|
|
my $logfile='';
|
|
#my $logfile = "/var/log/vacation/vacation.log";
|
|
# path to file for debugging, debug supressed when empty
|
|
my $debugfile='';
|
|
#my $debugfile = "/var/log/vacation/vacation.debug";
|
|
|
|
# =========== end configuration ===========
|
|
|
|
use DBI;
|
|
use MIME::Base64;
|
|
use MIME::EncWords qw(:all);
|
|
use Email::Valid;
|
|
use strict;
|
|
use Mail::Sendmail;
|
|
|
|
binmode (STDIN,':utf8');
|
|
|
|
my $dbh;
|
|
if ($db_host) {
|
|
$dbh = DBI->connect("DBI:$db_type:dbname=$db_name;host=$db_host","$db_username", "$db_password", { RaiseError => 1 });
|
|
} else {
|
|
$dbh = DBI->connect("DBI:$db_type:dbname=$db_name","$db_username", "$db_password", { RaiseError => 1 });
|
|
}
|
|
|
|
if (!$dbh) {
|
|
panic("Could not connect to database");
|
|
exit(0);
|
|
}
|
|
|
|
my $db_true; # MySQL and PgSQL use different values for TRUE
|
|
if ($db_type eq "mysql") {
|
|
$dbh->do("SET CHARACTER SET utf8;");
|
|
$db_true = '1';
|
|
} else { # Pg
|
|
# TODO: SET CHARACTER SET is mysql only, needs FIX for ALL databases
|
|
$db_true = 'True';
|
|
}
|
|
|
|
# used to detect infinite address lookup loops
|
|
my $loopcount=0;
|
|
|
|
sub do_debug {
|
|
if ( $debugfile ) {
|
|
my $date;
|
|
open (DEBUG, ">> $debugfile") or die ("Unable to open debug file");
|
|
binmode (DEBUG, ':utf8');
|
|
chop ($date = `date "+%Y/%m/%d %H:%M:%S"`);
|
|
print DEBUG "====== $date ======\n";
|
|
my $i;
|
|
for ($i=0;$i<$#_;$i++) {
|
|
print DEBUG $_[$i], ' | ';
|
|
}
|
|
print DEBUG $_[($#_)], "\n";
|
|
close (DEBUG);
|
|
}
|
|
}
|
|
|
|
sub already_notified {
|
|
my ($to, $from) = @_;
|
|
my $query = qq{INSERT into vacation_notification (on_vacation,notified) values (?,?)};
|
|
my $stm = $dbh->prepare($query);
|
|
if (!$stm) {
|
|
do_log('',$to,$from,'','',"Could not prepare query $query");
|
|
return 1;
|
|
}
|
|
$stm->{'PrintError'} = 0;
|
|
$stm->{'RaiseError'} = 0;
|
|
if (!$stm->execute($to,$from)) {
|
|
my $e=$dbh->errstr;
|
|
|
|
# Violation of a primay key constraint may happen here, and that's
|
|
# fine. All other error conditions are not fine, however.
|
|
if (!$e =~ /_pkey/) {
|
|
do_log('',$to,$from,'','',"Unexpected error: '$e' from query '$query'");
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
sub do_log {
|
|
my ($messageid, $to, $from, $subject, $logmessage) = @_;
|
|
my $date;
|
|
if ( $syslog ) {
|
|
open (SYSLOG, "|/usr/bin/logger -p mail.info -t Vacation") or die ("Unable to open logger");
|
|
binmode(SYSLOG, ':utf8');
|
|
if ($logmessage) {
|
|
printf SYSLOG "Orig-To: %s From: %s MessageID: %s Subject: %s. Log message: $%s", $to, $from, $messageid, $subject, $logmessage;
|
|
} else {
|
|
printf SYSLOG "Orig-To: %s From: %s MessageID: %s Subject: %s", $to, $from, $messageid, $subject;
|
|
}
|
|
close (SYSLOG);
|
|
}
|
|
if ( $logfile ) {
|
|
open (LOG, ">> $logfile") or die ("Unable to open log file");
|
|
binmode (LOG, ':utf8');
|
|
chop ($date = `date "+%Y/%m/%d %H:%M:%S"`);
|
|
if ($logmessage) {
|
|
print LOG "$date: To: $to From: $from Subject: $subject MessageID: $messageid. Log message: $logmessage\n";
|
|
} else {
|
|
print LOG "$date: To: $to From: $from Subject: $subject MessageID: $messageid\n";
|
|
}
|
|
close (LOG);
|
|
}
|
|
}
|
|
|
|
sub do_mail {
|
|
# from, to, subject, body
|
|
my ($from, $to, $subject, $body) = @_;
|
|
my $vacation_subject = encode_mimewords($subject, 'Encoding'=> 'q', 'Charset'=>'utf-8', 'Field'=>'Subject');
|
|
my %mail;
|
|
%mail = (
|
|
'Subject' => $vacation_subject,
|
|
'From' => $from,
|
|
'To' => $to,
|
|
'MIME-Version' => '1.0',
|
|
'Content-Type' => 'text/plain; charset=UTF-8',
|
|
'Content-Transfer-Encoding' => 'base64',
|
|
'Precedence' => 'junk',
|
|
'X-Loop' => 'Postfix Admin Virtual Vacation',
|
|
'Message' => encode_base64($body)
|
|
);
|
|
sendmail(%mail) or do_log($Mail::Sendmail::error);
|
|
do_debug('Mail::Sendmail said :' . $Mail::Sendmail::log);
|
|
}
|
|
|
|
sub panic {
|
|
my ($arg) = @_;
|
|
do_log('','','','','',"$arg");
|
|
exit(0);
|
|
}
|
|
|
|
sub panic_prepare {
|
|
my ($arg) = @_;
|
|
do_log('','','','','',"Could not prepare '$arg'");
|
|
exit(0);
|
|
}
|
|
|
|
sub panic_execute {
|
|
my ($arg,$param) = @_;
|
|
do_log('','','','','',"Could not execute '$arg' with parameters $param");
|
|
exit(0);
|
|
}
|
|
|
|
sub find_real_address {
|
|
my ($email) = @_;
|
|
if (++$loopcount > 20) {
|
|
do_log ("find_real_address loop!", "currently: $email", "ERROR", "ERROR");
|
|
panic("possible infinite loop in find_real_address for <$email>. Check for alias loop\n");
|
|
}
|
|
my $realemail;
|
|
my $query = qq{SELECT email FROM vacation WHERE email=? and active=$db_true};
|
|
my $stm = $dbh->prepare($query) or panic_prepare($query);
|
|
$stm->execute($email) or panic_execute($query,"email='$email'");
|
|
my $rv = $stm->rows;
|
|
|
|
# Recipient has vacation
|
|
if ($rv == 1) {
|
|
$realemail = $email;
|
|
} else {
|
|
$query = qq{SELECT goto FROM alias WHERE address=?};
|
|
$stm = $dbh->prepare($query) or panic_prepare($query);
|
|
$stm->execute($email) or panic_execute($query,"address='$email'");
|
|
$rv = $stm->rows;
|
|
|
|
# Recipient is an alias, check if mailbox has vacation
|
|
if ($rv == 1) {
|
|
my @row = $stm->fetchrow_array;
|
|
my $alias = $row[0];
|
|
$query = qq{SELECT email FROM vacation WHERE email=? and active=$db_true};
|
|
$stm = $dbh->prepare($query) or panic_prepare($query);
|
|
$stm->execute($alias) or panic_prepare($query,"email='$alias'");
|
|
$rv = $stm->rows;
|
|
|
|
# Alias has vacation
|
|
if ($rv == 1) {
|
|
$realemail = $alias;
|
|
}
|
|
|
|
# We still have to look for domain level aliases...
|
|
} else {
|
|
my ($user, $domain) = split(/@/, $email);
|
|
$query = qq{SELECT goto FROM alias WHERE address=?};
|
|
$stm = $dbh->prepare($query) or panic_prepare($query);
|
|
$stm->execute("\@$domain") or panic_execute($query,"address='\@$domain'");
|
|
$rv = $stm->rows;
|
|
|
|
# The receipient has a domain level alias
|
|
if ($rv == 1) {
|
|
my @row = $stm->fetchrow_array;
|
|
my $wildcard_dest = $row[0];
|
|
my ($wilduser, $wilddomain) = split(/@/, $wildcard_dest);
|
|
|
|
# Check domain alias
|
|
if ($wilduser) {
|
|
($rv, $realemail) = find_real_address ($wildcard_dest);
|
|
} else {
|
|
my $new_email = $user . '@' . $wilddomain;
|
|
($rv, $realemail) = find_real_address ($new_email);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ($rv, $realemail);
|
|
}
|
|
|
|
sub send_vacation_email {
|
|
my ($email, $orig_from, $orig_to, $orig_messageid) = @_;
|
|
my $query = qq{SELECT subject,body FROM vacation WHERE email=?};
|
|
my $stm = $dbh->prepare($query) or panic_prepare($query);
|
|
$stm->execute($email) or panic_execute($query,"email='$email'");
|
|
my $rv = $stm->rows;
|
|
if ($rv == 1) {
|
|
my @row = $stm->fetchrow_array;
|
|
if (already_notified($email, $orig_from)) { return; }
|
|
do_debug ("[SEND RESPONSE] for $orig_messageid:\n", "FROM: $email (orig_to: $orig_to)\n", "TO: $orig_from\n", "VACATION SUBJECT: $row[0]\n", "VACATION BODY: $row[1]\n");
|
|
|
|
# do_mail(from, to, subject, body);
|
|
do_mail ($email, $orig_from, $row[0], $row[1]);
|
|
do_log ($orig_messageid, $orig_to, $orig_from, '');
|
|
}
|
|
|
|
}
|
|
|
|
########################### main #################################
|
|
|
|
my ($from, $to, $cc, $subject, $messageid, $lastheader);
|
|
|
|
$subject='';
|
|
|
|
# Take headers apart
|
|
while (<STDIN>) {
|
|
last if (/^$/);
|
|
if (/^\s+(.*)/ and $lastheader) { $$lastheader .= " $1"; }
|
|
elsif (/^from:\s+(.*)\n$/i) { $from = $1; $lastheader = \$from; }
|
|
elsif (/^to:\s+(.*)\n$/i) { $to = $1; $lastheader = \$to; }
|
|
elsif (/^cc:\s+(.*)\n$/i) { $cc = $1; $lastheader = \$cc; }
|
|
elsif (/^subject:\s+(.*)\n$/i) { $subject = $1; $lastheader = \$subject; }
|
|
elsif (/^message-id:\s+(.*)\n$/i) { $messageid = $1; $lastheader = \$messageid; }
|
|
elsif (/^x-spam-(flag|status):\s+yes/i) { exit (0); }
|
|
elsif (/^precedence:\s+(bulk|list|junk)/i) { exit (0); }
|
|
elsif (/^x-loop:\s+postfix\ admin\ virtual\ vacation/i) { exit (0); }
|
|
else {$lastheader = "" ; }
|
|
}
|
|
|
|
# If either From: or To: are not set, exit
|
|
if (!$from || !$to || !$messageid) { exit (0); }
|
|
|
|
$from = lc ($from);
|
|
|
|
if (!Email::Valid->address($from,-mxcheck => 1)) { do_debug("Invalid from email address: $from; exiting."); exit(0); }
|
|
|
|
# Check if it's an obvious sender, exit
|
|
if ($from =~ /([\w\-.%]+\@[\w.-]+)/) { $from = $1; }
|
|
if ($from eq "" || $from =~ /^owner-|-(request|owner)\@|^(mailer-daemon|postmaster)\@/i) { exit (0); }
|
|
|
|
# Strip To: and Cc: and push them in array
|
|
my @strip_cc_array;
|
|
my @strip_to_array = split(/, */, lc ($to) );
|
|
if (defined $cc) { @strip_cc_array = split(/, */, lc ($cc) ); }
|
|
push (@strip_to_array, @strip_cc_array);
|
|
|
|
my @search_array;
|
|
|
|
# Strip email address from headers
|
|
for (@strip_to_array) {
|
|
if ($_ =~ /([\w\-.%]+\@[\w.-]+)/) {
|
|
push (@search_array, $1);
|
|
do_debug ("[STRIP RECIPIENTS]: ", $messageid, $1);
|
|
}
|
|
}
|
|
|
|
# Search for email address which has vacation
|
|
for (@search_array) {
|
|
/([\w\-.%]+\@[\w.-]+)/ or next;
|
|
my $addr = $1;
|
|
my ($rv, $email) = find_real_address ($addr);
|
|
if ($rv == 1) {
|
|
do_debug ("[FOUND VACATION]: ", $messageid, $from, $to, $email);
|
|
send_vacation_email( $email, $from, $to, $messageid);
|
|
}
|
|
}
|
|
|
|
0;
|
|
|
|
#/* vim: set expandtab softtabstop=3 tabstop=3 shiftwidth=3: */
|