26 files changed, 1326 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..eb00208
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+*~
+Makefile
+MYMETA.json
+MYMETA.yml
+blib
+pm_to_blib
+Makefile.old
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
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+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..afe6a74
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,4 @@
+% perl Makefile.PL
+% make
+% make test
+% make install
diff --git a/Makefile.PL b/Makefile.PL
new file mode 100644
index 0000000..4c0c64c
--- /dev/null
+++ b/Makefile.PL
@@ -0,0 +1,9 @@
+use ExtUtils::MakeMaker;
+
+WriteMakefile(NAME         => 'SpamCat',
+	      VERSION_FROM =>  'lib/SpamCat.pm',
+	      EXE_FILES    => ['bin/spamcat'],
+              PREREQ_PM    => {'DBI'           => '0',
+			       'Email::Simple' => '0',
+			       'IO::File'      => '0',
+	                       'Test::More'    => '0'});
diff --git a/README b/README
new file mode 100644
index 0000000..ae358b8
--- /dev/null
+++ b/README
@@ -0,0 +1 @@
+Something like spamgourmet.
diff --git a/bin/spamcat b/bin/spamcat
new file mode 100755
index 0000000..2986382
--- /dev/null
+++ b/bin/spamcat
@@ -0,0 +1,72 @@
+#!/usr/bin/perl
+
+=head1 NAME
+
+spamcat - Filter spam by number of messages sent.
+
+=head1 SYNOPSIS
+
+spamcat [options]
+
+=over 8
+
+=item B<--help>
+
+Print a brief help message and exit.
+
+=item B<-c> C<file>
+
+Load configuration from C<file>
+
+=item B<--dumpconfig>
+
+Dump the current configuration.
+
+=back
+
+=head1 DESCRIPTION
+
+B<spamcat> allows you to have disposable email addresses.
+
+=head1 AUTHOR
+
+Brian Cully <bjc@kublai.com>
+
+=cut
+
+use SpamCat;
+use SpamCat::Conf;
+
+use Getopt::Long;
+use Pod::Usage;
+
+use Data::Dumper;
+
+use strict;
+use warnings;
+
+my $DEFAULT_CONFIGFILE = '/usr/local/etc/spamcat.conf';
+
+my ($help, $configfile, $dumpconfig);
+GetOptions('help|h'     => \$help,
+	   'c=s'        => \$configfile,
+	   'dumpconfig' => \$dumpconfig) || pod2usage(2);
+pod2usage(1) if $help;
+
+$configfile = $configfile || $DEFAULT_CONFIGFILE;
+my %conf = SpamCat::Conf::read($configfile);
+
+if ($dumpconfig) {
+  foreach my $k (keys %conf) {
+    my $v = $conf{$k};
+    if ($k eq 'domains') {
+      $v = join ', ', @{$v};
+    }
+    print uc($k) . " = " . $v . "\n";
+  }
+  exit;
+}
+
+my $sch = SpamCat->new(%conf) ||
+  die "Couldn't start spamcat: $!\n";
+$sch->deliver;
diff --git a/config/create-tables.sql b/config/create-tables.sql
new file mode 100644
index 0000000..9f6d93a
--- /dev/null
+++ b/config/create-tables.sql
@@ -0,0 +1,7 @@
+DROP TABLE IF EXISTS emails;
+CREATE TABLE emails (
+	sender TEXT NOT NULL PRIMARY KEY,
+	count INTEGER DEFAULT 20,
+	created TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+	modified TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
diff --git a/config/spamcat.conf b/config/spamcat.conf
new file mode 100644
index 0000000..1f1313d
--- /dev/null
+++ b/config/spamcat.conf
@@ -0,0 +1,4 @@
+DBPATH=/var/vmail/spork.org/bjc/spamcat.sqlite3
+DEFAULT_COUNT=20
+DELIVER=/usr/local/libexec/dovecot/deliver
+DOMAINS=bjc.spork.org
+\ No newline at end of file
diff --git a/lib/SpamCat.pm b/lib/SpamCat.pm
new file mode 100644
index 0000000..5c6db51
--- /dev/null
+++ b/lib/SpamCat.pm
@@ -0,0 +1,166 @@
+package SpamCat;
+
+use Carp;
+use Data::Dumper;
+use DBI;
+use Email::Simple;
+use IO::File;
+
+use strict;
+use warnings;
+
+our $VERSION = '0';
+
+my $log = sub {
+  print STDERR "DEBUG: " . join(', ', @_) . "\n";
+};
+
+sub new {
+  my($class, %conf) = @_;
+
+  my $dbh = DBI->connect("dbi:SQLite:dbname=$conf{dbpath}", '', '');
+  $conf{dbh} = $dbh;
+  bless \%conf, $class;
+}
+
+sub deliver {
+  my ($self) = @_;
+
+  local $/;
+  my $email = Email::Simple->new(<>);
+  my $email_to = $email->header('To');
+  my @to_addrs = $self->parse_to(split /,\s*/, $email_to);
+
+  my $count;
+  foreach my $to_addr (@to_addrs) {
+    foreach my $domain (@{$self->{domains}}) {
+      if ($to_addr =~ /(.*)\@$domain/) {
+	my $sender = $1;
+	my $c = $self->decrement_count($sender);
+	if (!defined $count || $c > $count) {
+	  $count = $c;
+	}
+      }
+    }
+  }
+
+  if (defined $count) {
+    return if $count == 0;
+
+    my $count_str = '[' . $count . '/' . $self->{default_count} . ']';
+    my $new_subject = $email->header('Subject');
+    if ($new_subject) {
+      $new_subject .= ' - ' . $count_str;
+    } else {
+      $new_subject = $count_str;
+    }
+    $email->header_set('Subject' => $new_subject);
+  }
+
+  my $deliverfh = IO::File->new("| " . $self->{deliver}) ||
+    die "Couldn't open pipe to " . $self->{deliver} . ": $!\n";
+  print $deliverfh $email->as_string;
+  $deliverfh->close;
+}
+
+sub parse_to {
+  my ($self, @tovals) = @_;
+
+  map {
+    if ($_ =~ /<(.*)>/) {
+      $1;
+    } else {
+      $_;
+    }
+  } @tovals;
+}
+
+sub get_count {
+  my ($self, $sender) = @_;
+
+  $self->in_transaction(sub { $self->get_count_t($sender) });
+}
+
+sub set_count {
+  my ($self, $sender, $count) = @_;
+
+  $self->in_transaction(sub { $self->set_count_t($sender, $count); });
+}
+
+sub decrement_count {
+  my ($self, $sender) = @_;
+
+  $self->in_transaction(sub { $self->decrement_count_t($sender); });
+}
+
+#
+# The _t functions are meant to be run inside transacitons.
+#
+
+sub get_count_t {
+  my ($self, $sender) = @_;
+
+  my $q = 'SELECT count FROM emails WHERE sender=?';
+  my $sth = $self->{dbh}->prepare($q);
+  $sth->execute($sender);
+  my @row = $sth->fetchrow_array;
+  $sth->finish;
+
+  $row[0];
+}
+
+sub set_count_t {
+  my ($self, $sender, $count) = @_;
+
+  my $q;
+  if (!defined $self->get_count_t($sender)) {
+    # Insert when there's no count.
+    $q = 'INSERT INTO emails (count, sender) VALUES (?, ?)';
+  } else {
+    # Otherwise update the record with the new count.
+    $q = 'UPDATE emails SET count = ? modified = CURRENT_TIMESTAMP WHERE sender = ?'
+  }
+  my $sth = $self->{dbh}->prepare($q);
+  $sth->execute($count, $sender);
+  $sth->finish;
+
+  $count;
+}
+
+sub decrement_count_t {
+  my ($self, $sender) = @_;
+
+  my $q;
+  my $count = $self->get_count_t($sender);
+  if (!defined $count) {
+    $count = $self->{default_count};
+    $q = 'INSERT INTO emails (count, sender) VALUES (?, ?)';
+  } else {
+    $count = $count <= 0 ? '0' : $count - 1;
+    $q = "UPDATE emails SET count = ?, modified = CURRENT_TIMESTAMP WHERE sender = ?";
+  }
+
+  my $sth = $self->{dbh}->prepare($q);
+  $sth->execute($count, $sender);
+  $sth->finish;
+
+  $count;
+}
+
+sub in_transaction {
+  my ($self, $sub) = @_;
+
+  $self->{dbh}->begin_work;
+  my $rc = eval { &$sub($self); };
+  if ($@) {
+    $self->{dbh}->rollback;
+    warn "ERROR: Transaction failed: $@\n";
+    exit 1;
+  } else {
+    $self->{dbh}->commit;
+  }
+
+  $rc;
+}
+
+1;
diff --git a/lib/SpamCat/Conf.pm b/lib/SpamCat/Conf.pm
new file mode 100644
index 0000000..ab6a3ff
--- /dev/null
+++ b/lib/SpamCat/Conf.pm
@@ -0,0 +1,45 @@
+package SpamCat::Conf;
+
+use IO::File;
+
+use strict;
+use warnings;
+
+sub read {
+  my ($filen) = @_;
+  my %rc;
+
+  my $fh = IO::File->new($filen) ||
+    die "Couldn't open $filen for reading: $!\n";
+  while (<$fh>) {
+    my ($key, $val) = parse_line($_);
+    if (defined $key && defined $val) {
+      $rc{$key} = $val;
+    }
+  }
+  $fh->close;
+
+  %rc;
+}
+
+sub parse_line {
+  my ($line) = @_;
+
+  chomp $line;
+  $line =~ s/(.*)#.*/$1/;
+  $line =~ s/\s+$//;
+
+  if ($line =~ /\s*([^\s]*)\s*=\s*(.*)$/) {
+    my $key = lc $1;
+    my $val = $2;
+
+    if ($key eq 'domains') {
+      $val =~ s/,/ /g;
+      my @vals = split /\s+/, $val;
+      $val = \@vals;
+    }
+    return ($key, $val);
+  }
+}
+
+1;
diff --git a/t/bin.t b/t/bin.t
new file mode 100644
index 0000000..41a82c2
--- /dev/null
+++ b/t/bin.t
@@ -0,0 +1,39 @@
+#!/usr/bin/perl
+
+use Test::More tests => 1;
+
+use IO::File;
+
+use strict;
+use warnings;
+
+system "/usr/bin/env > /tmp/fpp";
+
+my $spamcat  = 'bin/spamcat';
+my $conffile = 't/fixtures/sample.conf';
+
+# Add testlib which has createdb and possibly population of said db.
+
+my @dumpconfig = `$spamcat -c t/fixtures/sample.conf --dumpconfig`;
+my %got = parse_configdump(@dumpconfig);
+my %expected = (DBPATH	      => '/tmp/spamcat.sqlite3',
+		DEFAULT_COUNT => 10,
+		DELIVER	      => 't/delivert',
+		DOMAINS	      => "spamcat.example.com, spamcat2.example.com, spamcat3");
+is_deeply(\%got, \%expected);
+
+# Test for proper delivery.
+my $fh = IO::File->new("|$spamcat -c $conffile") ||
+  die "Couldn't open pipe to $spamcat: $!\n";
+$fh->close;
+
+sub parse_configdump {
+  my %rc;
+
+  while (my $line = shift) {
+    $line =~ /(.*) = (.*)/;
+    $rc{$1} = $2;
+  }
+
+  %rc;
+}
diff --git a/t/conf.t b/t/conf.t
new file mode 100644
index 0000000..dbe2217
--- /dev/null
+++ b/t/conf.t
@@ -0,0 +1,18 @@
+# -*- mode: cperl -*-
+
+use Test::More tests => 7;
+
+use strict;
+use warnings;
+
+require_ok 'SpamCat::Conf';
+
+ok(SpamCat::Conf->can('read'));
+my %conf = SpamCat::Conf::read('t/fixtures/sample.conf');
+ok(%conf);
+
+is($conf{dbpath}, '/tmp/spamcat.sqlite3');
+is($conf{default_count}, 10);
+is($conf{deliver}, 't/delivert');
+is_deeply($conf{domains},
+	  ['spamcat.example.com', 'spamcat2.example.com', 'spamcat3']);
diff --git a/t/delivert b/t/delivert
new file mode 100755
index 0000000..63c3864
--- /dev/null
+++ b/t/delivert
@@ -0,0 +1,25 @@
+#!/usr/bin/perl
+
+use Email::Simple;
+use IO::File;
+
+use strict;
+use warnings;
+
+die usage() unless $#ARGV == 0;
+my $path = shift;
+
+local $/;
+my $email = Email::Simple->new(<>);
+
+my $msgid = $email->header('Message-ID');
+$msgid =~ s/<(.*)@.*>/$1/;
+
+my $fh = IO::File->new(">$path/$msgid") ||
+  die "Couldn't write to $path/$msgid: $!\n";
+print $fh $email->as_string;
+$fh->close;
+
+sub usage {
+  "Usage: $0 path\n";
+}
diff --git a/t/fixtures/bar b/t/fixtures/bar
new file mode 100644
index 0000000..fd600a6
--- /dev/null
+++ b/t/fixtures/bar
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: bar@spamcat.example.com
+Subject: test
+Message-Id: <bar@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/foo b/t/fixtures/foo
new file mode 100644
index 0000000..6365fab
--- /dev/null
+++ b/t/fixtures/foo
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: foo@spamcat.example.com
+Subject: test
+Message-Id: <foo@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/foo.expected b/t/fixtures/foo.expected
new file mode 100644
index 0000000..9da87a9
--- /dev/null
+++ b/t/fixtures/foo.expected
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: foo@spamcat.example.com
+Subject: test - [18/20]
+Message-Id: <foo@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/foo2 b/t/fixtures/foo2
new file mode 100644
index 0000000..1696186
--- /dev/null
+++ b/t/fixtures/foo2
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: foo@spamcat2.example.com
+Subject: test
+Message-Id: <foo2@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/foo2.expected b/t/fixtures/foo2.expected
new file mode 100644
index 0000000..e4d9335
--- /dev/null
+++ b/t/fixtures/foo2.expected
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: foo@spamcat2.example.com
+Subject: test - [17/20]
+Message-Id: <foo2@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/multiple b/t/fixtures/multiple
new file mode 100644
index 0000000..2da9b27
--- /dev/null
+++ b/t/fixtures/multiple
@@ -0,0 +1,15 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: name1@spamcat.example.com, "Someone else" <foo@spamcat.example.com>,
+ foo@wrongdomain.example.com
+Subject: test
+Message-Id: <multiple@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/multiple.expected b/t/fixtures/multiple.expected
new file mode 100644
index 0000000..d5c17a5
--- /dev/null
+++ b/t/fixtures/multiple.expected
@@ -0,0 +1,15 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: name1@spamcat.example.com, "Someone else" <foo@spamcat.example.com>,
+ foo@wrongdomain.example.com
+Subject: test - [20/20]
+Message-Id: <multiple@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/nosubj b/t/fixtures/nosubj
new file mode 100644
index 0000000..3a58556
--- /dev/null
+++ b/t/fixtures/nosubj
@@ -0,0 +1,13 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: nosubj@spamcat.example.com
+Message-Id: <nosubj@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/nosubj.expected b/t/fixtures/nosubj.expected
new file mode 100644
index 0000000..94db30e
--- /dev/null
+++ b/t/fixtures/nosubj.expected
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: nosubj@spamcat.example.com
+Message-Id: <nosubj@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+Subject: [20/20]
+
+Sample email.
diff --git a/t/fixtures/sample.conf b/t/fixtures/sample.conf
new file mode 100644
index 0000000..e0d644b
--- /dev/null
+++ b/t/fixtures/sample.conf
@@ -0,0 +1,6 @@
+# Comments and newlines are ignored.
+
+DBPATH=/tmp/spamcat.sqlite3  # So should most whitespace and inline comments.
+DEFAULT_COUNT =10            # Make sure key=val doesn't work in comments
+DELIVER= t/delivert          # by saying DEFAULT_COUNT=8
+DOMAINS = spamcat.example.com, spamcat2.example.com spamcat3
diff --git a/t/fixtures/wrongdomain b/t/fixtures/wrongdomain
new file mode 100644
index 0000000..a65cb0f
--- /dev/null
+++ b/t/fixtures/wrongdomain
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: bar@wrongdomain.example.com
+Subject: test
+Message-Id: <wrongdomain@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/fixtures/wrongdomain.expected b/t/fixtures/wrongdomain.expected
new file mode 100644
index 0000000..a65cb0f
--- /dev/null
+++ b/t/fixtures/wrongdomain.expected
@@ -0,0 +1,14 @@
+Return-Path: <test@mta.example.com>
+Delivered-To: spamcat@example.com
+Received: from mta.example.com
+	by mta.example.com (Dovecot) with LMTP id 9DDcI25oblTvgAEAQc1eRg
+	for <spamcat@example.com>; Thu, 20 Nov 2014 17:17:18 -0500
+Received: by mta.example.com (Postfix, from userid 1001)
+	id 844956F1EE; Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+To: bar@wrongdomain.example.com
+Subject: test
+Message-Id: <wrongdomain@mta.example.com>
+Date: Thu, 20 Nov 2014 17:17:18 -0500 (EST)
+From: sender@example.com (Spamcat Sender)
+
+Sample email.
diff --git a/t/lib.t b/t/lib.t
new file mode 100644
index 0000000..21e1c09
--- /dev/null
+++ b/t/lib.t
@@ -0,0 +1,94 @@
+# -*- Mode: cperl -*-
+
+use Test::More tests => 31;
+
+use strict;
+use warnings;
+
+my ($tmpdir, %conf);
+BEGIN {
+  $tmpdir = "/tmp/spamcat.t.$$";
+  %conf = (dbpath        => "$tmpdir/spamcat.sqlite3",
+	   default_count => 20,
+	   deliver       => "t/delivert $tmpdir",
+	   domains       => ['spamcat.example.com', 'spamcat2.example.com']);
+
+  system "rm -rf $tmpdir";
+  mkdir $tmpdir;
+  system "/usr/local/bin/sqlite3 $conf{dbpath} < config/create-tables.sql";
+}
+
+END {
+  system "rm -rf $tmpdir";
+}
+
+require_ok 'SpamCat';
+
+ok(SpamCat->can('new'), 'Has constructor');
+my $sch = SpamCat->new(%conf);
+ok(defined $sch, 'Constructor returns instance');
+
+ok(SpamCat->can('decrement_count'), 'Has count decrementor');
+is($sch->decrement_count('foo'), $conf{default_count},
+   'Default count for new sender');
+is($sch->decrement_count('foo'), 19, 'Existing sender decrements');
+
+ok(SpamCat->can('get_count'), 'Has count getter');
+is($sch->get_count('foo'), 19, 'Returns existing sender count');
+ok(!defined $sch->get_count('doesntexist'),
+   'Non-existant sender has undefined count');
+
+ok(SpamCat->can('set_count'), 'Has count setter');
+is($sch->set_count('bar', 1), 1, 'Setting count returns existing count');
+is($sch->decrement_count('bar'), 0, 'Decrementing count from 1 returns 0');
+is($sch->decrement_count('bar'), 0, 'Decrementing count from 0 returns 0');
+
+ok(SpamCat->can('parse_to'));
+my @addrs;
+@addrs = $sch->parse_to('foo@bar.com');
+is($addrs[0], 'foo@bar.com');
+@addrs = $sch->parse_to('"FooBar" <foo@bar.com>');
+is($addrs[0], 'foo@bar.com');
+@addrs = $sch->parse_to('"Foo@Bar" <baz@pham.com>');
+is($addrs[0], 'baz@pham.com');
+@addrs = $sch->parse_to('"Foo@Bar" <baz@pham.com>', '"a@b <one@two.com>"');
+is($addrs[0], 'baz@pham.com');
+is($addrs[1], 'one@two.com');
+
+ok(SpamCat->can('deliver'), 'Has delivery method');
+test_file('foo', 1);
+test_file('foo2', 1);
+test_file('multiple', 1);
+test_file('wrongdomain', 1);
+test_file('nosubj', 1);
+test_file('bar', 0);
+
+sub test_file {
+  my ($filen, $should_exist) = @_;
+
+  my $input = IO::File->new("<t/fixtures/$filen") ||
+    die "Couldn't open $filen: $!\n";
+  my $inputfd = fileno($input);
+  open STDIN, ">&$inputfd" || die "Couldn't open $inputfd: $!\n";
+
+  $sch->deliver();
+
+  if ($should_exist) {
+    ok(-f "$tmpdir/$filen") || diag("$tmpdir/$filen doesn't exist.");
+
+    local $/;
+    my $fh = IO::File->new("<$tmpdir/$filen") ||
+      die "Couldn't open $tmpdir/$filen for reading: $!\n";
+    my $got = <$fh>;
+    $fh->close;
+
+    $fh = IO::File->new("<t/fixtures/$filen.expected") ||
+      die "Couldn't open t/fixtures/$filen.expected for reading: $!\n";
+    my $expected = <$fh>;
+    $fh->close;
+
+    is($got, $expected) || diag("Test for $filen output failed.");
+  } else {
+    ok(! -f "$tmpdir/$filen") || diag("$tmpdir/$filen exists.");
+  }
+}