From 5636774abde98bcddffdec88b297c7ff322aab43 Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Mon, 16 Jul 2012 15:09:24 -0700
Subject: utility for updating the blacklist entries in
 /etc/mail/spamassassin/local.cf

---
 tools/blacklist-update | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100755 tools/blacklist-update

diff --git a/tools/blacklist-update b/tools/blacklist-update
new file mode 100755
index 0000000..99fe4cc
--- /dev/null
+++ b/tools/blacklist-update
@@ -0,0 +1,53 @@
+#! /usr/bin/perl -w
+
+use strict;
+use Symbol;
+
+main: {
+  my $file = '/etc/mail/spamassassin/local.cf';
+  my $inch = Symbol::gensym;
+  my $mainpart = '';
+  my %blacklist = ();
+  my $verb = 'blacklist_from';
+  open($inch, '<', $file)
+    || die "Could not open input file '$file'\n";
+  while (my $line = <$inch>) {
+    chomp $line;
+    my @stuff = split(' ', $line, 2);
+    if (0+@stuff == 2 && $stuff[0] eq $verb) {
+        $blacklist{$stuff[1]} ++;
+    } else {
+      $mainpart .= $line . "\n";
+    }
+  }
+  close $inch;
+  my $unchanged = 0;
+  my $new = 0;
+  while (my $line=<>){
+    chomp $line;
+    if ($line =~ m'<.*@(.*)>$') {
+      my $key = "*@" . $1;
+      if (exists $blacklist{$key}) {
+        $unchanged++;
+      } else {
+        $new++;
+      }
+      $blacklist{$key} ++;      
+    } else {
+      print STDERR "no '<user\@domain>'; ignoring line ...\n";
+      print STDERR "... '$line'\n";
+    }
+  }
+
+  my $ouch = Symbol::gensym;  
+  open($ouch, '>', $file)
+    || die "Could not open output file '$file'\n";
+  print $ouch $mainpart;
+  for my $baddy (sort keys %blacklist){
+    print $ouch "$verb $baddy\n";
+  }
+  close $ouch;
+  my $updated = $unchanged + $new;
+  my $total = 0+(keys %blacklist);
+  print "$new new + $unchanged unchanged = $updated updated;  $total new total\n";
+}
-- 
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