#!/usr/bin/perl
#
# $Id: dspam_notify,v 1.06 2011/11/03 11:58:15 sbajic Exp $

use Net::SMTP;

# Enter the location of you dspam.conf, dspam binary and path to dspam_admin/dspam_stats.
$DSPAMCONF = '@sysconfdir@/dspam.conf';
$DSPAM_BINARY = '@bindir@/@dspam_transformed@';
$BINDIR = '@bindir@';

# Who will the notifications be sent from?
$FROM_EMAIL = 'dspam@example.org';
$FROM_NAME = 'DSPAM Filter';
  
# What will the notification subject be?
$SUBJECT = 'Daily Spam Quarantine Summary';

# What text to display in the body?
$BODY = qq!<p>This report has been sent to you from the Anti-Spam service hosted at example.org. Below is a list of items in your quarantine area. You can view or release a message by clicking on the links (right). If you no longer wish to receive these reports then you may change the option on the 'Preferences' page.</p>!;

# Quarantine URL
$DSPAM_URL = 'https://dspam.example.org';

# Maximum of entries to show in mail
$MAX_ITEMS = 200;

# Address of your SMTP server? localhost should be fine.
$SERVER = 'localhost';

# Port of your SMTP server? 25 should be fine
$PORT = '25';

# Enable User Preference Checking (Very CPU Intensive!!!) Not Recommended for more than 500 email accounts.
$PREF_CHECK = 0;

######################################
# No need to config below this point.#
######################################


#Build the Quarantine URL
$QUARANTINE_URL = $DSPAM_URL . '/dspam.cgi?template=quarantine';

# Autodetect scale and preference extension support
$LARGE_SCALE = 0;
$DOMAIN_SCALE = 0;
$PREFERENCES_EXTENSION = 0;
do {
  my $x = `$DSPAM_BINARY --version`;
  $PREFERENCES_EXTENSION = 1 if ($x =~ /--enable-preferences-extension/);
  $LARGE_SCALE = 1 if ($x =~ /--enable-large-scale/);
  $DOMAIN_SCALE = 1 if ($x =~ /--enable-domain-scale/) ;
};

# Date Formatting
my ($SEC,$MIN,$HOUR,$MDAY,$MON,$YEAR,$WDAY,$YDAY,$ISDST) = localtime(time);
  
# Array containing Days of the week abreviations
@WEEKDAYS = ('Sun','Mon','Tue','Wed','Thu','Fri','Sat');
    
# Array containing Month abreviations
@MONTHS = ('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
    
$D = (localtime)[6];
$M = (localtime)[4];

$DAY_ABR = $WEEKDAYS[$D];
$MONTH_ABR = $MONTHS[$M];
$DAY_NUM = $MDAY; 
$YEAR += 1900;

$TODAY = $DAY_ABR . " " . $MONTH_ABR . " " . sprintf("%2s", $DAY_NUM);

# Get the location of DSPAM home and if AllowOverride is set for dailyQuarantineSummary
$DSPAMHOME = "";
$ALLOW_OVERRIDE = "";
$DEFAULT_PREF = "";
open(DCONF, $DSPAMCONF) || die("Could not open " . $DSPAMCONF . " file!");
while(<DCONF>) {
  chomp;
  my($directive, $value) = split(/\s+/);
  $DSPAMHOME = $value if ($directive eq "Home");
  $ALLOW_OVERRIDE = "on" if ($directive eq "AllowOverride" && $value eq "dailyQuarantineSummary");
  if ($directive eq "Preference") {
    if ($value =~ /^\s*[\"\']?dailyQuarantineSummary[\t ]*=[\t ]*on[\"\']?/) {
      $DEFAULT_PREF = "on";
    } else {
      $DEFAULT_PREF = "off";
    }
  }
  last if($DSPAMHOME ne "" && $ALLOW_OVERRIDE ne "" && $DEFAULT_PREF ne "");
}
close(DCONF);
$ALLOW_OVERRIDE = "off" if($ALLOW_OVERRIDE eq "");
$DEFAULT_PREF = "off" if($DEFAULT_PREF eq "");
if (! -d $DSPAMHOME) {
  die("Could not determine DSPAM home!");
}

# Create list of users having TP bigger then zero
open(IN, "$BINDIR/dspam_stats|");
while(<IN>) {
  chomp;
  s/:/ /g;
  my($username, $tp, $tn, $fp, $fn, $sc, $nc) = (split(/\s+/))[0,2,4,6,8,10,12];
  if ($tp eq "") {
    $_ = <IN>;
    s/:/ /g;
    ($tp, $tn, $fp, $fn, $sc, $nc) = (split(/\s+/))[2,4,6,8,10,12];
  }
  push(@RECIPIENT_LIST, $username) if $tp != 0;
}
close(IN);

# Get default user preference for dailyQuarantineSummary
if ($PREF_CHECK == 1 && $PREFERENCES_EXTENSION == 1) {
  open(PIPE, "$BINDIR/dspam_admin agg pref 'default'|");
  while(<PIPE>) {
    chomp;
    my($directive, $value) = split(/\=/);
    if ($directive eq "dailyQuarantineSummary") {
      $DEFAULT_PREF = $value;
      last;
    }
  }
  close(PIPE);
}

# Gather Recipient Quarantine Info
foreach $RECIPIENT (@RECIPIENT_LIST) {

  # Get User Preference from dspam_admin
  if ($ALLOW_OVERRIDE eq "on") {						# Check for Allow Overides
    open(PIPE, "$BINDIR/dspam_admin li pref " . quotemeta($RECIPIENT) . "|");
    while(<PIPE>) {
      chomp;
      my($directive, $value) = split(/\=/);
      if ($directive eq "dailyQuarantineSummary") {
        if ($value ne "on" && $value ne "off") {
          $USER_PREF = $DEFAULT_PREF;						# User Preference in valid, use default preference
        } else {
          $USER_PREF = $value;
        }
        last;
      }
    }
    close(PIPE);
  } else {
    $USER_PREF = $DEFAULT_PREF;							# Overrides off, use default preference
  }

   # Build path to Quarantine .mbox
  if ($DOMAIN_SCALE == 1) {							# Format Quarantine path for Domain Scale
    my($u, $D) = (split(/@/, $RECIPIENT));
    $MBOX = $DSPAMHOME . "/data/" . $D . "/" . $u . "/" . $u . ".mbox";
  } elsif ($LARGE_SCALE == 1) {							# Format Quarantine path for Large Scale
    $u = substr($RECIPIENT, 0, 1);
    $s = substr($RECIPIENT, 1, 1);
    $MBOX = $DSPAMHOME . "/data/" . $u . "/" . $s . "/" . $RECIPIENT . "/" . $RECIPIENT . ".mbox";
  } else {									# Format Quarantine path for Normal Scale
    $MBOX = $DSPAMHOME . "/data/" . $RECIPIENT . "/" . $RECIPIENT . ".mbox";
  }

  # Get total amount of quarantine messages and their signature
  $NEW = 0;
  $TOTAL = 0;
  $SIG = '';
  @Q_SIG = ();
  @Q_SUBJECT = ();
  if ($USER_PREF ne "off" && -e $MBOX) {					# Check if .mbox file exists and user pref
    open(MBOX, "<$MBOX") || die("Could not open " . $MBOX . " file!");
    while(<MBOX>) {
      s/\r?\n//;
      next if ($_ !~ /^From QUARANTINE/);
      $TOTAL++;									# Count Total messages in Quarantine
      $NEW++ if ($_ =~ /^From QUARANTINE $TODAY/);				# Count New messages in Quarantine
      $QSUBJECT = '<None Specified>';
      while(<MBOX>) {
        s/\r?\n//;
        last if ($_ eq "");
        my($key, $val) = split(/\: ?/, $_, 2);
        if ($key =~ /^Subject$/i) {
          $val =~ s/^\s+//;
          $val =~ s/\s+$//;
          $QSUBJECT = $val if ($val ne "");
        }
        if ($key =~ /^X\-DSPAM\-Signature$/) {
          push(@Q_SIG, $val);
          $QSUBJECT =~ s/</&lt;/g;
          $QSUBJECT =~ s/>/&gt;/g;
          $QSUBJECT = substr($QSUBJECT, 0, 50) . "..." if (length($QSUBJECT)>50);
          push(@Q_SUBJECT, $QSUBJECT);
          last;
        }
      }
    }
    close(MBOX);
  }
  push(@Q_SUBJECT_ITEMS, join("\n", @Q_SUBJECT));
  push(@Q_SIG_ITEMS, join("\n", @Q_SIG));
  push(@Q_NEW_ITEMS, $NEW);							# Send Count to Array for later use
  push(@Q_TOTAL_ITEMS, $TOTAL);							# Send Count to Array for later use
  @Q_SUBJECT = ();
  @Q_SIG = ();
}


# Send some emails
@Q_ROW_COLOR=('CCCCCC','FFFFFF');
$SMTP = Net::SMTP->new(								# Establish SMTP Connection
	Host => $SERVER . ":" . $PORT,
	Timeout => 30) || die ("Could not connect to SMTP server " . $SERVER . ":" . $PORT . "; $!");
for ($I = 0; $I <= $#RECIPIENT_LIST; $I++) {					# Loop through Recipients List and send the message
  if (@Q_TOTAL_ITEMS[$I] != 0) {						# Don't send reminders to users with empty quarantines
    $SMTP->mail($FROM_EMAIL);
    $SMTP->to($RECIPIENT_LIST[$I]);
    $SMTP->data();
    $SMTP->datasend("From: $FROM_NAME <$FROM_EMAIL>\n");
    $SMTP->datasend("To: $RECIPIENT_LIST[$I]\n");
    $SMTP->datasend("Subject: $SUBJECT\n");
    $SMTP->datasend("Mime-Version: 1.0\n");
    $SMTP->datasend("Content-Type: text/html; charset=UTF-8\n");
    $SMTP->datasend("\n");
    $SMTP->datasend("<HTML>\n");
    $SMTP->datasend("<HEAD>\n");
    $SMTP->datasend("<TITLE>DSPAM Quarantine Summary for $RECIPIENT_LIST[$I]</TITLE>\n");
    $SMTP->datasend("<META HTTP-EQUIV='Content-Type' CONTENT='text/html; charset=utf-8'>\n");
    $SMTP->datasend("</HEAD>\n");
    $SMTP->datasend("<BODY>\n");
    $SMTP->datasend($BODY ."\n");
    $SMTP->datasend("<TABLE>\n");
    $SMTP->datasend("<TR><TD>Quarantine Summary for</TD><TD>$RECIPIENT_LIST[$I]</TD></TR>\n");
    $SMTP->datasend("<TR><TD>Date</TD><TD>$TODAY, $YEAR</TD></TR>\n");
    $SMTP->datasend("<TR><TD COLSPAN='2'>&nbsp;</TD></TR>\n");
    $SMTP->datasend("<TR><TD>New Messages</TD><TD>@Q_NEW_ITEMS[$I]</TD></TR>\n");
    $SMTP->datasend("<TR><TD>Total Messages</TD><TD>@Q_TOTAL_ITEMS[$I]</TD></TR>\n");
    $SMTP->datasend("</TABLE>\n");
    $SMTP->datasend("<BR>\n");
    $SMTP->datasend("<TABLE>\n");
    @Q_SUBJECT = split(/\n/,@Q_SUBJECT_ITEMS[$I]);
    @Q_SIG = split(/\n/,@Q_SIG_ITEMS[$I]);
    for ($J = 0; $J <= $#Q_SIG; $J++) {
      my $QCOMMAND = $QUARANTINE_URL . "&user=" . $RECIPIENT_LIST[$I] . "&signatureID=" . @Q_SIG[$J];
      my $QROW_COLOR = 0;
      $QROW_COLOR = 1 if(($J % 2) != 0);
      $SMTP->datasend("<TR>");
      if ($J >= $MAX_ITEMS) {
        $SMTP->datasend("<TD COLSPAM='3' STYLE='background-color:" . @Q_ROW_COLOR[$QROW_COLOR] . ";'>To display more then " . $MAX_ITEMS . " messages, please visit the DSPAM Control Center.</TD>\n");
        $SMTP->datasend("</TR>\n");
        last;
      }
      $SMTP->datasend("<TD STYLE='background-color:" . @Q_ROW_COLOR[$QROW_COLOR] . ";'>" . @Q_SUBJECT[$J] . "</TD>");
      $SMTP->datasend("<TD STYLE='background-color:" . @Q_ROW_COLOR[$QROW_COLOR] . ";'><A HREF='" . $QCOMMAND . "&command=viewMessage' TARGET='_blank'>View</A></TD>");
      $SMTP->datasend("<TD STYLE='background-color:" . @Q_ROW_COLOR[$QROW_COLOR] . ";'><A HREF='" . $QCOMMAND . "&command=processFalsePositive' TARGET='_blank'>Release</A></TD>");
      $SMTP->datasend("</TR>\n");
    }
    $SMTP->datasend("</TABLE>\n");
    $SMTP->datasend("<BR>\n");
    $SMTP->datasend("Please remember to check <A HREF='$QUARANTINE_URL' TARGET='_blank'>Your Quarantine</A> regularly.\n");
    $SMTP->datasend("</BODY>\n");
    $SMTP->datasend("</HTML>\n");
    $SMTP->dataend();
  }
}
$SMTP->quit;									# Close SMTP Connection