5 =head1 NAME $RCSfile: maps,v $
7 This script filters mail based on the files nulllist, blacklist and whitelist.
8 Input is an email message. This script extracts the From line and then parses
9 the email address. If the email is from a sender who should be /dev/null'ed
10 (e.g. bounce messages from mail daemons) the message will be discarded. If the
11 sender is on the blacklist then a message is sent back informing the sender that
12 he's been blacklisted. If the sender is on the white list then the email is
13 appended to the mail drop file. Otherwise a message is sent back informing the
14 sender that in order to successfully send email the sender must register for the
15 permission to do so, along with a URL that allows the sender to sign up.
23 Andrew DeFaria <Andrew@DeFaria.com>
31 Fri Nov 29 14:17:21 2002
35 $Date: 2013/06/12 14:05:47 $
41 Usage maps: [-u|ser <username>] [-ve|rbose] [-deb|ug] [-e|xecute]
44 -u|ser <username>: Set context to this username
47 -de|bug: Output debug messages
49 -[no]e|xecute: Set execute mode.
51 # (c) Copyright 2000-2006, Andrew@DeFaria.com, all rights reserved.
60 use File::Temp qw (tempfile);
61 use Net::Domain qw (hostdomain);
63 use lib "$FindBin::Bin/../lib", '/opt/clearscm/lib';
73 my $userid = $ENV{USER};
75 my $logpath = "$FindBin::Bin/../log";
76 my $logfile = "$logpath/debug.log";
77 my $forwardto = $ENV{MAPS_FORWARDTO} || 'adefaria@gmail.com';
79 # For some reason I'm not parsing messages correctly but it only seems to
80 # happen when the message is piped in from the MTA. This routine will
81 # temporarily save the messages in a file.
84 my $msgfile = tempfile ();
86 # Read STDIN and write it out to the tempfile
91 # Seek to the start of the file (Note if we closed it, it would be deleted)
94 # Return the filehandle
98 sub ValidDomainUser ($) {
101 my ($username, $domainname);
103 if ($sender =~ /(.*)\@(.*)/) {
110 return 1 if $domainname ne hostdomain;
112 # Let BICE email come through
113 return 1 if $username eq "bice";
115 my $uid = getpwnam $username;
117 return defined $uid ? 1 : 0;
120 sub ProcessMsgs ($$$) {
121 my ($msgfile, $username, $user_email) = @_;
126 while (!eof *$msgfile) {
127 my ($sender, $sender_long, $reply_to, $subject, $data) = ReadMsg (*$msgfile);
131 #open my $mail, '|', "/usr/lib/sendmail $forwardto"
132 #or die "Unable to open pipe to sendmail - $!";
134 #print $mail "$data\n";
137 #or die "Unable to forward email to $forwardto - $!";
140 my ($onlist, $rule, $sequence, $hit_count);
142 # Algorithm change: We now first check to see if the sender is not found
143 # in the message and skip it if so. Then we handle if we are the sender
144 # and that the from address is formatted properly. Spammers often use
145 # the senders email address (i.e. andrew@defaria.com) as their from address
146 # so we check "Andrew DeFaria <Andrew@DeFaria.com>", which they have never
147 # forged. This catches a lot of spam actually.
149 # Next we check to see if the sender is on our whitelist. If so then we let
150 # them in. This allows us to say whitelist josephrosenberg@hotmail.com while
151 # still nulllisting all of the other hotmail.com spammers.
153 # Next we process blacklisted people as they are also of high priority.
155 # Then we process nulllist people.
157 # Finally, we handle return processing
159 # Special sender handling:
160 if ($sender !~ /.+\@.+/) {
161 verbose "Sender not found in message or invalid";
165 if ($sender eq $user_email and
166 (lc ($sender_long) !~ lc ("\"$username\" <$user_email>") and
167 lc ($sender_long) !~ lc ("$username <$user_email>"))) {
168 verbose "Nulllisting message from sender ($sender_long) pretending to be $user_email";
174 ($onlist, $rule, $sequence, $hit_count) = OnWhitelist $sender;
177 if (ValidDomainUser $sender) {
178 verbose "Whitelisting $sender";
179 Whitelist $sender, $data, $sequence, $hit_count;
181 verbose "Sender from this domain but user not found";
189 ($onlist, $rule, $sequence, $hit_count) = OnBlacklist $sender;
192 verbose "Blacklisting $sender";
193 my @msg = split /\n/, $data;
195 Blacklist $sender, $sequence, $hit_count, @msg;
200 ($onlist, $rule, $sequence, $hit_count) = OnNulllist $sender;
203 verbose "Nulllisting $sender";
204 Nulllist $sender, $sequence, $hit_count;
209 verbose "Returning message from $sender";
210 ReturnMsg $sender, $reply_to, $subject, $data;
216 'user=s' => \$userid,
217 'verbose' => sub { set_verbose },
218 'debug' => sub { set_debug },
219 'execute!' => \$execute,
220 'forwardto=s' => \$forwardto
225 if ($ARGV[0] and $ARGV[0] ne "") {
226 open $msgfile, $ARGV[0];
229 Error "Unable to open file ($ARGV[0]): $!\n";
233 $msgfile = SaveStdin;
236 verbose "Starting MAPS....";
238 my ($username, $user_email) = SetContext $userid
239 or die "$userid is not a registered MAPS user\n";
241 ProcessMsgs $msgfile, $username, $user_email;