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#!/usr/bin/env perl
use Data::Dumper;
use Getopt::Long;
use Time::Piece;
use Pod::Usage;
use warnings;
use strict;
my @symbols_search;
my $reject_score = 15.0;
my $junk_score = 6.0;
my $log_file = "";
my $man = 0;
my $help = 0;
GetOptions(
"reject-score=f" => \$reject_score,
"junk-score=f" => \$junk_score,
"symbol=s@" => \@symbols_search,
"log=s" => \$log_file,
"help|?" => \$help,
"man" => \$man
) or pod2usage(2);
pod2usage(1) if $help;
pod2usage(-exitval => 0, -verbose => 2) if $man;
# Global vars
my $total = 0;
my $total_spam = 0;
my $total_junk = 0;
my $junk_symbols = 0;
my $spam_symbols = 0;
my $ham_symbols = 0;
my $ham_spam_change = 0;
my $ham_junk_change = 0;
my $diff_alpha = 0.1;
my %sym_res;
my $rspamd_log;
if ($log_file eq '-' || $log_file eq '') {
$rspamd_log = \*STDIN;
}
else {
open($rspamd_log, '<', $log_file) or die "cannot open $log_file";
}
while(<$rspamd_log>) {
if (/^.*rspamd_task_write_log.*$/) {
my @elts = split /\s+/;
my $ts = $elts[0] . ' ' . $elts[1];
if ($_ !~ /\[(-?\d+(?:\.\d+)?)\/(-?\d+(?:\.\d+)?)\]\s+\[([^\]]+)\]/) {
#print "BAD\n";
next;
}
$total ++;
my $score = $1 * 1.0;
if ($score >= $reject_score) {
$total_spam ++;
}
elsif ($score >= $junk_score) {
$total_junk ++;
}
# Symbols
my @symbols = split /,/, $3;
foreach my $s (@symbols_search) {
my @selected = grep /$s/, @symbols;
if (scalar(@selected) > 0) {
foreach my $sym (@selected) {
$sym =~ /^([^\(]+)(\(([^\)]+)\))?/;
my $sym_name = $1;
my $sym_score = 0;
if ($2) {
$sym_score = $3 * 1.0;
if (abs($sym_score) < $diff_alpha) {
next;
}
}
if (!$sym_res{$sym_name}) {
$sym_res{$sym_name} = {
hits => 0,
spam_hits => 0,
junk_hits => 0,
spam_change => 0,
junk_change => 0,
weight => 0,
};
}
my $r = $sym_res{$sym_name};
$r->{hits} ++;
$r->{weight} += $sym_score;
my $is_spam = 0;
my $is_junk = 0;
if ($score >= $reject_score) {
$is_spam = 1;
$r->{spam_hits} ++;
}
elsif ($score >= $junk_score) {
$is_junk = 1;
$r->{junk_hits} ++;
}
if ($sym_score != 0) {
my $score_without = $score - $sym_score;
if ($sym_score > 0) {
if ($is_spam && $score_without < $reject_score) {
$r->{spam_change} ++;
}
if ($is_junk && $score_without < $junk_score) {
$r->{junk_change} ++;
}
}
else {
if (!$is_spam && $score_without >= $reject_score) {
$r->{spam_change} ++;
}
if (!$is_junk && $score_without >= $junk_score) {
$r->{junk_change} ++;
}
}
}
}
}
}
}
}
my $total_ham = $total - ($total_spam + $total_junk);
if ($total > 0) {
while (my ($s, $r) = each(%sym_res)) {
if ($r->{hits} > 0) {
my $th = $r->{hits};
my $sh = $r->{spam_hits};
my $jh = $r->{junk_hits};
my $hh = $r->{hits} - $sh - $jh;
my $htp = $hh * 100.0 / $total_ham if $total_ham != 0;
my $stp = $sh * 100.0 / $total_spam if $total_spam != 0;
my $jtp = $jh * 100.0 / $total_junk if $total_junk != 0;
printf "Symbol: %s (weight %.3f) (%d hits, %.3f%%)\nHam hits: %d (%.3f%%), total ham: %d (ham with $s: %.3f%%)\nSpam hits: %d (%.3f%%), total spam: %d (spam with $s: %.3f%%)\nJunk hits: %d (%.3f%%), total junk: %d (junk with $s: %.3f%%)\n",
$s, $r->{weight} / $r->{hits}, $th, ($th / $total * 100.0),
$hh, ($hh / $th * 100.0), $total_ham, ($htp or 0),
$sh, ($sh / $th * 100.0), $total_spam, ($stp or 0),
$jh, ($jh / $th * 100.0), $total_junk, ($jtp or 0);
my $schp = $r->{spam_change} / $total_spam * 100.0 if $total_spam;
my $jchp = $r->{junk_change} / $total_junk * 100.0 if $total_junk;
if ($r->{weight} != 0) {
if ($r->{weight} > 0) {
printf "Spam changes (ham/junk -> spam): %d (%.3f%%), total percentage (changes / spam hits): %.3f%%\nJunk changes (ham -> junk): %d (%.3f%%), total percentage (changes / junk hits): %.3f%%\n",
$r->{spam_change}, ($r->{spam_change} / $th * 100.0), ($schp or 0),
$r->{junk_change}, ($r->{junk_change} / $th * 100.0), ($jchp or 0);
}
else {
printf "Spam changes (spam -> junk/ham): %d (%.3f%%), total percentage (changes / spam hits): %.3f%%\nJunk changes (junk -> ham): %d (%.3f%%), total percentage (changes / junk hits): %.3f%%\n",
$r->{spam_change}, ($r->{spam_change} / $th * 100.0), ($schp or 0),
$r->{junk_change}, ($r->{junk_change} / $th * 100.0), ($jchp or 0);
}
}
}
else {
print "Symbol $s has not been met\n";
}
print '*' x 20 . "\n";
}
}
__END__
=head1 NAME
rspamd_stats - analyze Rspamd rules by parsing log files
=head1 SYNOPSIS
rspamd_stats [options] --symbol=SYM1 [--symbol=SYM2...] [--log file]
Options:
--log=file log file to read (stdin by default)
--reject-score=score set reject threshold (15 by default)
--junk-score=score set junk score (6.0 by default)
--symbol=sym check specified symbol (perl regexps are supported)
--help brief help message
--man full documentation
=head1 OPTIONS
=over 8
=item B<--log>
Specifies log file to read data from.
=item B<--reject-score>
Specifies the reject (spam) threshold.
=item B<--junk-score>
Specifies the junk (add header or rewrite subject) threshold.
=item B<--symbol>
Add symbol or pattern (pcre format) to analyze.
=item B<--help>
Print a brief help message and exits.
=item B<--man>
Prints the manual page and exits.
=back
=head1 DESCRIPTION
B<rspamd_stats> will read the given log file (or standard input) and provide statistics for the specified symbols:
Symbol: BAYES_SPAM (weight 3.763) (381985 hits, 26.827%)
Ham hits: 184557 (48.315%), total ham: 1095487 (ham with BAYES_SPAM: 16.847%)
Spam hits: 15134 (3.962%), total spam: 16688 (spam with BAYES_SPAM: 90.688%)
Junk hits: 182294 (47.723%), total junk: 311699 (junk with BAYES_SPAM: 58.484%)
Spam changes (ham/junk -> spam): 7026 (1.839%), total percentage (changes / spam hits): 42.102%
Junk changes (ham -> junk): 95192 (24.920%), total percentage (changes / junk hits): 30.540%
Where there are the following attributes:
=over 4
=item *
B<Weight>: average score for a symbols
=item *
B<Total hits>: total number of hits and percentage of symbol hits divided by total number of messages
=item *
B<HAM hits>: [rovides the following information about B<HAM> messages with the specified symbol (from left to right):
=over 4
=item 1.
B<total symbol hits>: number of messages that has this symbol and are B<HAM>
=item 2.
B<ham percentage>: number of symbol hits divided by overall B<HAM> messages count
=item 3.
B<total ham hits>: overall number of B<HAM> messages
=item 4.
B<ham with symbol percentage>: percentage of number of hits with specified symbol in B<HAM> messages divided by total number of B<HAM> messages.
=back
=item *
B<SPAM hits>: provides the following information about B<SPAM> messages - same as previous but for B<SPAM> class.
=item *
B<Junk hits>: provides the following information about B<Junk> messages - same as previous but for B<JUNK> class.
=item *
B<Spam changes>: displays data about how much messages switched their class because of the specific symbol weight.
=item *
B<Junk changes>: displays data about how much messages switched their class because of the specific symbol weight.
=back
=cut
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